Trace element geochemistry (Li, Ba, Sr, and Rb) using Curiosity's ChemCam: Early results for Gale crater from Bradbury Landing Site to Rocknest
Identifieur interne : 000B05 ( Istex/Corpus ); précédent : 000B04; suivant : 000B06Trace element geochemistry (Li, Ba, Sr, and Rb) using Curiosity's ChemCam: Early results for Gale crater from Bradbury Landing Site to Rocknest
Auteurs : Ann M. Ollila ; Horton E. Newsom ; Benton Clark Iii ; Roger C. Wiens ; Agnes Cousin ; Jen G. Blank ; Nicolas Mangold ; Violaine Sautter ; Sylvestre Maurice ; Samuel M. Clegg ; Olivier Gasnault ; Olivier Forni ; Robert Tokar ; Eric Lewin ; M. Darby Dyar ; Jeremie Lasue ; Ryan Anderson ; Scott M. Mclennan ; John Bridges ; Dave Vaniman ; Nina Lanza ; Cecile Fabre ; Noureddine Melikechi ; Glynis M. Perrett ; John L. Campbell ; Penelope L. King ; Bruce Barraclough ; Dorothea Delapp ; Stephen Johnstone ; Pierre-Yves Meslin ; Anya Rosen-Gooding ; Josh WilliamsSource :
- Journal of Geophysical Research: Planets [ 2169-9097 ] ; 2014-01.
Abstract
The ChemCam instrument package on the Mars rover, Curiosity, provides new capabilities to probe the abundances of certain trace elements in the rocks and soils on Mars using the laser‐induced breakdown spectroscopy technique. We focus on detecting and quantifying Li, Ba, Rb, and Sr in targets analyzed during the first 100 sols, from Bradbury Landing Site to Rocknest. Univariate peak area models and multivariate partial least squares models are presented. Li, detected for the first time directly on Mars, is generally low (<15 ppm). The lack of soil enrichment in Li, which is highly fluid mobile, is consistent with limited influx of subsurface waters contributing to the upper soils. Localized enrichments of up to ~60 ppm Li have been observed in several rocks but the host mineral for Li is unclear. Bathurst_Inlet is a fine‐grained bedrock unit in which several analysis locations show a decrease in Li and other alkalis with depth, which may imply that the unit has undergone low‐level aqueous alteration that has preferentially drawn the alkalis to the surface. Ba (~1000 ppm) was detected in a buried pebble in the Akaitcho sand ripple and it appears to correlate with Si, Al, Na, and K, indicating a possible feldspathic composition. Rb and Sr are in the conglomerate Link at abundances >100 ppm and >1000 ppm, respectively. These analysis locations tend to have high Si and alkali abundances, consistent with a feldspar composition. Together, these trace element observations provide possible evidence of magma differentiation and aqueous alteration.
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DOI: 10.1002/2013JE004517
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<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">Trace element geochemistry (Li, Ba, Sr, and Rb) using Curiosity's ChemCam: Early results for Gale crater from Bradbury Landing Site to Rocknest</title><author><name sortKey="Ollila, Ann M" sort="Ollila, Ann M" uniqKey="Ollila A" first="Ann M." last="Ollila">Ann M. Ollila</name><affiliation><mods:affiliation>Institute of Meteoritics, Department of Earth and Planetary Sciences, New Mexico, Albuquerque, USA</mods:affiliation></affiliation><affiliation><mods:affiliation>E-mail: aollila@unm.edu</mods:affiliation></affiliation></author><author><name sortKey="Newsom, Horton E" sort="Newsom, Horton E" uniqKey="Newsom H" first="Horton E." last="Newsom">Horton E. Newsom</name><affiliation><mods:affiliation>Institute of Meteoritics, Department of Earth and Planetary Sciences, New Mexico, Albuquerque, USA</mods:affiliation></affiliation></author><author><name sortKey="Clark Iii, Benton" sort="Clark Iii, Benton" uniqKey="Clark Iii B" first="Benton" last="Clark Iii">Benton Clark Iii</name><affiliation><mods:affiliation>Space Science Institute, Colorado, Boulder, USA</mods:affiliation></affiliation></author><author><name sortKey="Wiens, Roger C" sort="Wiens, Roger C" uniqKey="Wiens R" first="Roger C." last="Wiens">Roger C. Wiens</name><affiliation><mods:affiliation>Los Alamos National Laboratory, New Mexico, Los Alamos, USA</mods:affiliation></affiliation></author><author><name sortKey="Cousin, Agnes" sort="Cousin, Agnes" uniqKey="Cousin A" first="Agnes" last="Cousin">Agnes Cousin</name><affiliation><mods:affiliation>Los Alamos National Laboratory, New Mexico, Los Alamos, USA</mods:affiliation></affiliation></author><author><name sortKey="Blank, Jen G" sort="Blank, Jen G" uniqKey="Blank J" first="Jen G." last="Blank">Jen G. Blank</name><affiliation><mods:affiliation>NASA Ames Research Center, California, Moffett Field, USA</mods:affiliation></affiliation></author><author><name sortKey="Mangold, Nicolas" sort="Mangold, Nicolas" uniqKey="Mangold N" first="Nicolas" last="Mangold">Nicolas Mangold</name><affiliation><mods:affiliation>LPGN, CNRS, UMR6112, Université Nantes, Nantes, France</mods:affiliation></affiliation></author><author><name sortKey="Sautter, Violaine" sort="Sautter, Violaine" uniqKey="Sautter V" first="Violaine" last="Sautter">Violaine Sautter</name><affiliation><mods:affiliation>Laboratoire de Minéralogie et Cosmochimie du Muséum, Muséum National d'Histoire Naturelle, Paris, France</mods:affiliation></affiliation></author><author><name sortKey="Maurice, Sylvestre" sort="Maurice, Sylvestre" uniqKey="Maurice S" first="Sylvestre" last="Maurice">Sylvestre Maurice</name><affiliation><mods:affiliation>Institut de Recherche en Astrophysique et Planétologie, Université Paul Sabatier, Toulouse, France</mods:affiliation></affiliation></author><author><name sortKey="Clegg, Samuel M" sort="Clegg, Samuel M" uniqKey="Clegg S" first="Samuel M." last="Clegg">Samuel M. Clegg</name><affiliation><mods:affiliation>Los Alamos National Laboratory, New Mexico, Los Alamos, USA</mods:affiliation></affiliation></author><author><name sortKey="Gasnault, Olivier" sort="Gasnault, Olivier" uniqKey="Gasnault O" first="Olivier" last="Gasnault">Olivier Gasnault</name><affiliation><mods:affiliation>Institut de Recherche en Astrophysique et Planétologie, Université Paul Sabatier, Toulouse, France</mods:affiliation></affiliation></author><author><name sortKey="Forni, Olivier" sort="Forni, Olivier" uniqKey="Forni O" first="Olivier" last="Forni">Olivier Forni</name><affiliation><mods:affiliation>Institut de Recherche en Astrophysique et Planétologie, Université Paul Sabatier, Toulouse, France</mods:affiliation></affiliation></author><author><name sortKey="Tokar, Robert" sort="Tokar, Robert" uniqKey="Tokar R" first="Robert" last="Tokar">Robert Tokar</name><affiliation><mods:affiliation>Planetary Science Institute, Arizona, Tucson, USA</mods:affiliation></affiliation></author><author><name sortKey="Lewin, Eric" sort="Lewin, Eric" uniqKey="Lewin E" first="Eric" last="Lewin">Eric Lewin</name><affiliation><mods:affiliation>ISTerre, Grenoble, France</mods:affiliation></affiliation></author><author><name sortKey="Dyar, M Darby" sort="Dyar, M Darby" uniqKey="Dyar M" first="M. Darby" last="Dyar">M. Darby Dyar</name><affiliation><mods:affiliation>Department of Astronomy, Mount Holyoke College, Massachusetts, South Hadley, USA</mods:affiliation></affiliation></author><author><name sortKey="Lasue, Jeremie" sort="Lasue, Jeremie" uniqKey="Lasue J" first="Jeremie" last="Lasue">Jeremie Lasue</name><affiliation><mods:affiliation>Institut de Recherche en Astrophysique et Planétologie, Université Paul Sabatier, Toulouse, France</mods:affiliation></affiliation></author><author><name sortKey="Anderson, Ryan" sort="Anderson, Ryan" uniqKey="Anderson R" first="Ryan" last="Anderson">Ryan Anderson</name><affiliation><mods:affiliation>Astrogeology Science Center, U.S. Geological Survey, Arizona, Flagstaff, USA</mods:affiliation></affiliation></author><author><name sortKey="Mclennan, Scott M" sort="Mclennan, Scott M" uniqKey="Mclennan S" first="Scott M." last="Mclennan">Scott M. Mclennan</name><affiliation><mods:affiliation>Department of Geosciences, State University of New York at Stony Brook, New York, Stony Brook, USA</mods:affiliation></affiliation></author><author><name sortKey="Bridges, John" sort="Bridges, John" uniqKey="Bridges J" first="John" last="Bridges">John Bridges</name><affiliation><mods:affiliation>Space Research Centre, Department of Physics and Astronomy, University of Leicester, Leicester, UK</mods:affiliation></affiliation></author><author><name sortKey="Vaniman, Dave" sort="Vaniman, Dave" uniqKey="Vaniman D" first="Dave" last="Vaniman">Dave Vaniman</name><affiliation><mods:affiliation>Planetary Science Institute, Arizona, Tucson, USA</mods:affiliation></affiliation></author><author><name sortKey="Lanza, Nina" sort="Lanza, Nina" uniqKey="Lanza N" first="Nina" last="Lanza">Nina Lanza</name><affiliation><mods:affiliation>Los Alamos National Laboratory, New Mexico, Los Alamos, USA</mods:affiliation></affiliation></author><author><name sortKey="Fabre, Cecile" sort="Fabre, Cecile" uniqKey="Fabre C" first="Cecile" last="Fabre">Cecile Fabre</name><affiliation><mods:affiliation>GeoResources, CNRS, UMR7356, Université de Lorraine, Vandoeuvre lès Nancy, France</mods:affiliation></affiliation></author><author><name sortKey="Melikechi, Noureddine" sort="Melikechi, Noureddine" uniqKey="Melikechi N" first="Noureddine" last="Melikechi">Noureddine Melikechi</name><affiliation><mods:affiliation>Optical Science Center for Applied Research, Delaware State University, Delaware, Dover, USA</mods:affiliation></affiliation></author><author><name sortKey="Perrett, Glynis M" sort="Perrett, Glynis M" uniqKey="Perrett G" first="Glynis M." last="Perrett">Glynis M. Perrett</name><affiliation><mods:affiliation>Department of Physics, University of Guelph, Ontario, Guelph, Canada</mods:affiliation></affiliation></author><author><name sortKey="Campbell, John L" sort="Campbell, John L" uniqKey="Campbell J" first="John L." last="Campbell">John L. Campbell</name><affiliation><mods:affiliation>Department of Physics, University of Guelph, Ontario, Guelph, Canada</mods:affiliation></affiliation></author><author><name sortKey="King, Penelope L" sort="King, Penelope L" uniqKey="King P" first="Penelope L." last="King">Penelope L. King</name><affiliation><mods:affiliation>Department of Physics, University of Guelph, Guelph, Ontario, Canada</mods:affiliation></affiliation><affiliation><mods:affiliation>Research School of Earth Sciences, Australian National University, ACT, Canberra, Australia</mods:affiliation></affiliation></author><author><name sortKey="Barraclough, Bruce" sort="Barraclough, Bruce" uniqKey="Barraclough B" first="Bruce" last="Barraclough">Bruce Barraclough</name><affiliation><mods:affiliation>Planetary Science Institute, Arizona, Tucson, USA</mods:affiliation></affiliation></author><author><name sortKey="Delapp, Dorothea" sort="Delapp, Dorothea" uniqKey="Delapp D" first="Dorothea" last="Delapp">Dorothea Delapp</name><affiliation><mods:affiliation>Los Alamos National Laboratory, New Mexico, Los Alamos, USA</mods:affiliation></affiliation></author><author><name sortKey="Johnstone, Stephen" sort="Johnstone, Stephen" uniqKey="Johnstone S" first="Stephen" last="Johnstone">Stephen Johnstone</name><affiliation><mods:affiliation>Los Alamos National Laboratory, New Mexico, Los Alamos, USA</mods:affiliation></affiliation></author><author><name sortKey="Meslin, Pierre Ves" sort="Meslin, Pierre Ves" uniqKey="Meslin P" first="Pierre-Yves" last="Meslin">Pierre-Yves Meslin</name><affiliation><mods:affiliation>Institut de Recherche en Astrophysique et Planétologie, Université Paul Sabatier, Toulouse, France</mods:affiliation></affiliation></author><author><name sortKey="Rosen Ooding, Anya" sort="Rosen Ooding, Anya" uniqKey="Rosen Ooding A" first="Anya" last="Rosen-Gooding">Anya Rosen-Gooding</name><affiliation><mods:affiliation>Albuquerque Academy, Albuquerque, New Mexico, USA</mods:affiliation></affiliation></author><author><name sortKey="Williams, Josh" sort="Williams, Josh" uniqKey="Williams J" first="Josh" last="Williams">Josh Williams</name><affiliation><mods:affiliation>Institute of Meteoritics, Department of Earth and Planetary Sciences, New Mexico, Albuquerque, USA</mods:affiliation></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:3B2C589795282C03E2C65C1EED4018972BE73237</idno><date when="2014" year="2014">2014</date><idno type="doi">10.1002/2013JE004517</idno><idno type="url">https://api.istex.fr/document/3B2C589795282C03E2C65C1EED4018972BE73237/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">000B05</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">000B05</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main">Trace element geochemistry (Li, Ba, Sr, and Rb) using <hi rend="italic">Curiosity</hi>'s ChemCam: Early results for Gale crater from Bradbury Landing Site to Rocknest</title><author><name sortKey="Ollila, Ann M" sort="Ollila, Ann M" uniqKey="Ollila A" first="Ann M." last="Ollila">Ann M. Ollila</name><affiliation><mods:affiliation>Institute of Meteoritics, Department of Earth and Planetary Sciences, New Mexico, Albuquerque, USA</mods:affiliation></affiliation><affiliation><mods:affiliation>E-mail: aollila@unm.edu</mods:affiliation></affiliation></author><author><name sortKey="Newsom, Horton E" sort="Newsom, Horton E" uniqKey="Newsom H" first="Horton E." last="Newsom">Horton E. Newsom</name><affiliation><mods:affiliation>Institute of Meteoritics, Department of Earth and Planetary Sciences, New Mexico, Albuquerque, USA</mods:affiliation></affiliation></author><author><name sortKey="Clark Iii, Benton" sort="Clark Iii, Benton" uniqKey="Clark Iii B" first="Benton" last="Clark Iii">Benton Clark Iii</name><affiliation><mods:affiliation>Space Science Institute, Colorado, Boulder, USA</mods:affiliation></affiliation></author><author><name sortKey="Wiens, Roger C" sort="Wiens, Roger C" uniqKey="Wiens R" first="Roger C." last="Wiens">Roger C. Wiens</name><affiliation><mods:affiliation>Los Alamos National Laboratory, New Mexico, Los Alamos, USA</mods:affiliation></affiliation></author><author><name sortKey="Cousin, Agnes" sort="Cousin, Agnes" uniqKey="Cousin A" first="Agnes" last="Cousin">Agnes Cousin</name><affiliation><mods:affiliation>Los Alamos National Laboratory, New Mexico, Los Alamos, USA</mods:affiliation></affiliation></author><author><name sortKey="Blank, Jen G" sort="Blank, Jen G" uniqKey="Blank J" first="Jen G." last="Blank">Jen G. Blank</name><affiliation><mods:affiliation>NASA Ames Research Center, California, Moffett Field, USA</mods:affiliation></affiliation></author><author><name sortKey="Mangold, Nicolas" sort="Mangold, Nicolas" uniqKey="Mangold N" first="Nicolas" last="Mangold">Nicolas Mangold</name><affiliation><mods:affiliation>LPGN, CNRS, UMR6112, Université Nantes, Nantes, France</mods:affiliation></affiliation></author><author><name sortKey="Sautter, Violaine" sort="Sautter, Violaine" uniqKey="Sautter V" first="Violaine" last="Sautter">Violaine Sautter</name><affiliation><mods:affiliation>Laboratoire de Minéralogie et Cosmochimie du Muséum, Muséum National d'Histoire Naturelle, Paris, France</mods:affiliation></affiliation></author><author><name sortKey="Maurice, Sylvestre" sort="Maurice, Sylvestre" uniqKey="Maurice S" first="Sylvestre" last="Maurice">Sylvestre Maurice</name><affiliation><mods:affiliation>Institut de Recherche en Astrophysique et Planétologie, Université Paul Sabatier, Toulouse, France</mods:affiliation></affiliation></author><author><name sortKey="Clegg, Samuel M" sort="Clegg, Samuel M" uniqKey="Clegg S" first="Samuel M." last="Clegg">Samuel M. Clegg</name><affiliation><mods:affiliation>Los Alamos National Laboratory, New Mexico, Los Alamos, USA</mods:affiliation></affiliation></author><author><name sortKey="Gasnault, Olivier" sort="Gasnault, Olivier" uniqKey="Gasnault O" first="Olivier" last="Gasnault">Olivier Gasnault</name><affiliation><mods:affiliation>Institut de Recherche en Astrophysique et Planétologie, Université Paul Sabatier, Toulouse, France</mods:affiliation></affiliation></author><author><name sortKey="Forni, Olivier" sort="Forni, Olivier" uniqKey="Forni O" first="Olivier" last="Forni">Olivier Forni</name><affiliation><mods:affiliation>Institut de Recherche en Astrophysique et Planétologie, Université Paul Sabatier, Toulouse, France</mods:affiliation></affiliation></author><author><name sortKey="Tokar, Robert" sort="Tokar, Robert" uniqKey="Tokar R" first="Robert" last="Tokar">Robert Tokar</name><affiliation><mods:affiliation>Planetary Science Institute, Arizona, Tucson, USA</mods:affiliation></affiliation></author><author><name sortKey="Lewin, Eric" sort="Lewin, Eric" uniqKey="Lewin E" first="Eric" last="Lewin">Eric Lewin</name><affiliation><mods:affiliation>ISTerre, Grenoble, France</mods:affiliation></affiliation></author><author><name sortKey="Dyar, M Darby" sort="Dyar, M Darby" uniqKey="Dyar M" first="M. Darby" last="Dyar">M. Darby Dyar</name><affiliation><mods:affiliation>Department of Astronomy, Mount Holyoke College, Massachusetts, South Hadley, USA</mods:affiliation></affiliation></author><author><name sortKey="Lasue, Jeremie" sort="Lasue, Jeremie" uniqKey="Lasue J" first="Jeremie" last="Lasue">Jeremie Lasue</name><affiliation><mods:affiliation>Institut de Recherche en Astrophysique et Planétologie, Université Paul Sabatier, Toulouse, France</mods:affiliation></affiliation></author><author><name sortKey="Anderson, Ryan" sort="Anderson, Ryan" uniqKey="Anderson R" first="Ryan" last="Anderson">Ryan Anderson</name><affiliation><mods:affiliation>Astrogeology Science Center, U.S. Geological Survey, Arizona, Flagstaff, USA</mods:affiliation></affiliation></author><author><name sortKey="Mclennan, Scott M" sort="Mclennan, Scott M" uniqKey="Mclennan S" first="Scott M." last="Mclennan">Scott M. Mclennan</name><affiliation><mods:affiliation>Department of Geosciences, State University of New York at Stony Brook, New York, Stony Brook, USA</mods:affiliation></affiliation></author><author><name sortKey="Bridges, John" sort="Bridges, John" uniqKey="Bridges J" first="John" last="Bridges">John Bridges</name><affiliation><mods:affiliation>Space Research Centre, Department of Physics and Astronomy, University of Leicester, Leicester, UK</mods:affiliation></affiliation></author><author><name sortKey="Vaniman, Dave" sort="Vaniman, Dave" uniqKey="Vaniman D" first="Dave" last="Vaniman">Dave Vaniman</name><affiliation><mods:affiliation>Planetary Science Institute, Arizona, Tucson, USA</mods:affiliation></affiliation></author><author><name sortKey="Lanza, Nina" sort="Lanza, Nina" uniqKey="Lanza N" first="Nina" last="Lanza">Nina Lanza</name><affiliation><mods:affiliation>Los Alamos National Laboratory, New Mexico, Los Alamos, USA</mods:affiliation></affiliation></author><author><name sortKey="Fabre, Cecile" sort="Fabre, Cecile" uniqKey="Fabre C" first="Cecile" last="Fabre">Cecile Fabre</name><affiliation><mods:affiliation>GeoResources, CNRS, UMR7356, Université de Lorraine, Vandoeuvre lès Nancy, France</mods:affiliation></affiliation></author><author><name sortKey="Melikechi, Noureddine" sort="Melikechi, Noureddine" uniqKey="Melikechi N" first="Noureddine" last="Melikechi">Noureddine Melikechi</name><affiliation><mods:affiliation>Optical Science Center for Applied Research, Delaware State University, Delaware, Dover, USA</mods:affiliation></affiliation></author><author><name sortKey="Perrett, Glynis M" sort="Perrett, Glynis M" uniqKey="Perrett G" first="Glynis M." last="Perrett">Glynis M. Perrett</name><affiliation><mods:affiliation>Department of Physics, University of Guelph, Ontario, Guelph, Canada</mods:affiliation></affiliation></author><author><name sortKey="Campbell, John L" sort="Campbell, John L" uniqKey="Campbell J" first="John L." last="Campbell">John L. Campbell</name><affiliation><mods:affiliation>Department of Physics, University of Guelph, Ontario, Guelph, Canada</mods:affiliation></affiliation></author><author><name sortKey="King, Penelope L" sort="King, Penelope L" uniqKey="King P" first="Penelope L." last="King">Penelope L. King</name><affiliation><mods:affiliation>Department of Physics, University of Guelph, Guelph, Ontario, Canada</mods:affiliation></affiliation><affiliation><mods:affiliation>Research School of Earth Sciences, Australian National University, ACT, Canberra, Australia</mods:affiliation></affiliation></author><author><name sortKey="Barraclough, Bruce" sort="Barraclough, Bruce" uniqKey="Barraclough B" first="Bruce" last="Barraclough">Bruce Barraclough</name><affiliation><mods:affiliation>Planetary Science Institute, Arizona, Tucson, USA</mods:affiliation></affiliation></author><author><name sortKey="Delapp, Dorothea" sort="Delapp, Dorothea" uniqKey="Delapp D" first="Dorothea" last="Delapp">Dorothea Delapp</name><affiliation><mods:affiliation>Los Alamos National Laboratory, New Mexico, Los Alamos, USA</mods:affiliation></affiliation></author><author><name sortKey="Johnstone, Stephen" sort="Johnstone, Stephen" uniqKey="Johnstone S" first="Stephen" last="Johnstone">Stephen Johnstone</name><affiliation><mods:affiliation>Los Alamos National Laboratory, New Mexico, Los Alamos, USA</mods:affiliation></affiliation></author><author><name sortKey="Meslin, Pierre Ves" sort="Meslin, Pierre Ves" uniqKey="Meslin P" first="Pierre-Yves" last="Meslin">Pierre-Yves Meslin</name><affiliation><mods:affiliation>Institut de Recherche en Astrophysique et Planétologie, Université Paul Sabatier, Toulouse, France</mods:affiliation></affiliation></author><author><name sortKey="Rosen Ooding, Anya" sort="Rosen Ooding, Anya" uniqKey="Rosen Ooding A" first="Anya" last="Rosen-Gooding">Anya Rosen-Gooding</name><affiliation><mods:affiliation>Albuquerque Academy, Albuquerque, New Mexico, USA</mods:affiliation></affiliation></author><author><name sortKey="Williams, Josh" sort="Williams, Josh" uniqKey="Williams J" first="Josh" last="Williams">Josh Williams</name><affiliation><mods:affiliation>Institute of Meteoritics, Department of Earth and Planetary Sciences, New Mexico, Albuquerque, USA</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j" type="main">Journal of Geophysical Research: Planets</title><title level="j" type="alt">JOURNAL OF GEOPHYSICAL RESEARCH: PLANETS</title><idno type="ISSN">2169-9097</idno><idno type="eISSN">2169-9100</idno><imprint><biblScope unit="vol">119</biblScope><biblScope unit="issue">1</biblScope><biblScope unit="page" from="255">255</biblScope><biblScope unit="page" to="285">285</biblScope><biblScope unit="page-count">31</biblScope><date type="published" when="2014-01">2014-01</date></imprint><idno type="ISSN">2169-9097</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">2169-9097</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract">The ChemCam instrument package on the Mars rover, Curiosity, provides new capabilities to probe the abundances of certain trace elements in the rocks and soils on Mars using the laser‐induced breakdown spectroscopy technique. We focus on detecting and quantifying Li, Ba, Rb, and Sr in targets analyzed during the first 100 sols, from Bradbury Landing Site to Rocknest. Univariate peak area models and multivariate partial least squares models are presented. Li, detected for the first time directly on Mars, is generally low (<15 ppm). The lack of soil enrichment in Li, which is highly fluid mobile, is consistent with limited influx of subsurface waters contributing to the upper soils. Localized enrichments of up to ~60 ppm Li have been observed in several rocks but the host mineral for Li is unclear. Bathurst_Inlet is a fine‐grained bedrock unit in which several analysis locations show a decrease in Li and other alkalis with depth, which may imply that the unit has undergone low‐level aqueous alteration that has preferentially drawn the alkalis to the surface. Ba (~1000 ppm) was detected in a buried pebble in the Akaitcho sand ripple and it appears to correlate with Si, Al, Na, and K, indicating a possible feldspathic composition. Rb and Sr are in the conglomerate Link at abundances >100 ppm and >1000 ppm, respectively. These analysis locations tend to have high Si and alkali abundances, consistent with a feldspar composition. Together, these trace element observations provide possible evidence of magma differentiation and aqueous alteration.</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>Ann M. Ollila</name><affiliations><json:string>Institute of Meteoritics, Department of Earth and Planetary Sciences, New Mexico, Albuquerque, USA</json:string><json:string>E-mail: aollila@unm.edu</json:string></affiliations></json:item><json:item><name>Horton E. Newsom</name><affiliations><json:string>Institute of Meteoritics, Department of Earth and Planetary Sciences, New Mexico, Albuquerque, USA</json:string></affiliations></json:item><json:item><name>Benton Clark III</name><affiliations><json:string>Space Science Institute, Colorado, Boulder, USA</json:string></affiliations></json:item><json:item><name>Roger C. Wiens</name><affiliations><json:string>Los Alamos National Laboratory, New Mexico, Los Alamos, USA</json:string></affiliations></json:item><json:item><name>Agnes Cousin</name><affiliations><json:string>Los Alamos National Laboratory, New Mexico, Los Alamos, USA</json:string></affiliations></json:item><json:item><name>Jen G. Blank</name><affiliations><json:string>NASA Ames Research Center, California, Moffett Field, USA</json:string></affiliations></json:item><json:item><name>Nicolas Mangold</name><affiliations><json:string>LPGN, CNRS, UMR6112, Université Nantes, Nantes, France</json:string></affiliations></json:item><json:item><name>Violaine Sautter</name><affiliations><json:string>Laboratoire de Minéralogie et Cosmochimie du Muséum, Muséum National d'Histoire Naturelle, Paris, France</json:string></affiliations></json:item><json:item><name>Sylvestre Maurice</name><affiliations><json:string>Institut de Recherche en Astrophysique et Planétologie, Université Paul Sabatier, Toulouse, France</json:string></affiliations></json:item><json:item><name>Samuel M. Clegg</name><affiliations><json:string>Los Alamos National Laboratory, New Mexico, Los Alamos, USA</json:string></affiliations></json:item><json:item><name>Olivier Gasnault</name><affiliations><json:string>Institut de Recherche en Astrophysique et Planétologie, Université Paul Sabatier, Toulouse, France</json:string></affiliations></json:item><json:item><name>Olivier Forni</name><affiliations><json:string>Institut de Recherche en Astrophysique et Planétologie, Université Paul Sabatier, Toulouse, France</json:string></affiliations></json:item><json:item><name>Robert Tokar</name><affiliations><json:string>Planetary Science Institute, Arizona, Tucson, USA</json:string></affiliations></json:item><json:item><name>Eric Lewin</name><affiliations><json:string>ISTerre, Grenoble, France</json:string></affiliations></json:item><json:item><name>M. Darby Dyar</name><affiliations><json:string>Department of Astronomy, Mount Holyoke College, Massachusetts, South Hadley, USA</json:string></affiliations></json:item><json:item><name>Jeremie Lasue</name><affiliations><json:string>Institut de Recherche en Astrophysique et Planétologie, Université Paul Sabatier, Toulouse, France</json:string></affiliations></json:item><json:item><name>Ryan Anderson</name><affiliations><json:string>Astrogeology Science Center, U.S. Geological Survey, Arizona, Flagstaff, USA</json:string></affiliations></json:item><json:item><name>Scott M. McLennan</name><affiliations><json:string>Department of Geosciences, State University of New York at Stony Brook, New York, Stony Brook, USA</json:string></affiliations></json:item><json:item><name>John Bridges</name><affiliations><json:string>Space Research Centre, Department of Physics and Astronomy, University of Leicester, Leicester, UK</json:string></affiliations></json:item><json:item><name>Dave Vaniman</name><affiliations><json:string>Planetary Science Institute, Arizona, Tucson, USA</json:string></affiliations></json:item><json:item><name>Nina Lanza</name><affiliations><json:string>Los Alamos National Laboratory, New Mexico, Los Alamos, USA</json:string></affiliations></json:item><json:item><name>Cecile Fabre</name><affiliations><json:string>GeoResources, CNRS, UMR7356, Université de Lorraine, Vandoeuvre lès Nancy, France</json:string></affiliations></json:item><json:item><name>Noureddine Melikechi</name><affiliations><json:string>Optical Science Center for Applied Research, Delaware State University, Delaware, Dover, USA</json:string></affiliations></json:item><json:item><name>Glynis M. Perrett</name><affiliations><json:string>Department of Physics, University of Guelph, Ontario, Guelph, Canada</json:string></affiliations></json:item><json:item><name>John L. Campbell</name><affiliations><json:string>Department of Physics, University of Guelph, Ontario, Guelph, Canada</json:string></affiliations></json:item><json:item><name>Penelope L. King</name><affiliations><json:string>Department of Physics, University of Guelph, Guelph, Ontario, Canada</json:string><json:string>Research School of Earth Sciences, Australian National University, ACT, Canberra, Australia</json:string></affiliations></json:item><json:item><name>Bruce Barraclough</name><affiliations><json:string>Planetary Science Institute, Arizona, Tucson, USA</json:string></affiliations></json:item><json:item><name>Dorothea Delapp</name><affiliations><json:string>Los Alamos National Laboratory, New Mexico, Los Alamos, USA</json:string></affiliations></json:item><json:item><name>Stephen Johnstone</name><affiliations><json:string>Los Alamos National Laboratory, New Mexico, Los Alamos, USA</json:string></affiliations></json:item><json:item><name>Pierre‐Yves Meslin</name><affiliations><json:string>Institut de Recherche en Astrophysique et Planétologie, Université Paul Sabatier, Toulouse, France</json:string></affiliations></json:item><json:item><name>Anya Rosen‐Gooding</name><affiliations><json:string>Albuquerque Academy, Albuquerque, New Mexico, USA</json:string></affiliations></json:item><json:item><name>Josh Williams</name><affiliations><json:string>Institute of Meteoritics, Department of Earth and Planetary Sciences, New Mexico, Albuquerque, USA</json:string></affiliations></json:item></author><subject><json:item><lang><json:string>eng</json:string></lang><value>laser‐induced breakdown spectroscopy</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Mars</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Gale crater</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>trace elements</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>ChemCam</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Mars Science Laboratory</value></json:item></subject><articleId><json:string>JGRE20193</json:string></articleId><arkIstex>ark:/67375/WNG-36PCPBFC-N</arkIstex><language><json:string>eng</json:string></language><originalGenre><json:string>article</json:string></originalGenre><abstract>The ChemCam instrument package on the Mars rover, Curiosity, provides new capabilities to probe the abundances of certain trace elements in the rocks and soils on Mars using the laser‐induced breakdown spectroscopy technique. We focus on detecting and quantifying Li, Ba, Rb, and Sr in targets analyzed during the first 100 sols, from Bradbury Landing Site to Rocknest. Univariate peak area models and multivariate partial least squares models are presented. Li, detected for the first time directly on Mars, is generally low (>15 ppm). The lack of soil enrichment in Li, which is highly fluid mobile, is consistent with limited influx of subsurface waters contributing to the upper soils. Localized enrichments of up to ~60 ppm Li have been observed in several rocks but the host mineral for Li is unclear. Bathurst_Inlet is a fine‐grained bedrock unit in which several analysis locations show a decrease in Li and other alkalis with depth, which may imply that the unit has undergone low‐level aqueous alteration that has preferentially drawn the alkalis to the surface. Ba (~1000 ppm) was detected in a buried pebble in the Akaitcho sand ripple and it appears to correlate with Si, Al, Na, and K, indicating a possible feldspathic composition. Rb and Sr are in the conglomerate Link at abundances >100 ppm and >1000 ppm, respectively. These analysis locations tend to have high Si and alkali abundances, consistent with a feldspar composition. Together, these trace element observations provide possible evidence of magma differentiation and aqueous alteration.</abstract><qualityIndicators><score>9.976</score><pdfWordCount>22281</pdfWordCount><pdfCharCount>127800</pdfCharCount><pdfVersion>1.6</pdfVersion><pdfPageCount>31</pdfPageCount><pdfPageSize>612 x 792 pts (letter)</pdfPageSize><refBibsNative>true</refBibsNative><abstractWordCount>248</abstractWordCount><abstractCharCount>1564</abstractCharCount><keywordCount>6</keywordCount></qualityIndicators><title>Trace element geochemistry (Li, Ba, Sr, and Rb) using Curiosity's ChemCam: Early results for Gale crater from Bradbury Landing Site to Rocknest</title><corporate><json:item><name>The MSL Science Team</name></json:item></corporate><genre><json:string>article</json:string></genre><host><title>Journal of Geophysical Research: Planets</title><language><json:string>unknown</json:string></language><doi><json:string>10.1002/(ISSN)2169-9100</json:string></doi><issn><json:string>2169-9097</json:string></issn><eissn><json:string>2169-9100</json:string></eissn><publisherId><json:string>JGRE</json:string></publisherId><volume>119</volume><issue>1</issue><pages><first>255</first><last>285</last><total>31</total></pages><genre><json:string>journal</json:string></genre><subject><json:item><value>Results from the first 360 sols of the Mars Science Laboratory Mission: Bradbury Landing through Yellowknife Bay</value></json:item><json:item><value>ELECTROMAGNETICS</value></json:item><json:item><value>Instruments and techniques</value></json:item><json:item><value>GEOCHEMISTRY</value></json:item><json:item><value>Composition of the planets</value></json:item><json:item><value>Major and trace element geochemistry</value></json:item><json:item><value>Research Article</value></json:item></subject></host><ark><json:string>ark:/67375/WNG-36PCPBFC-N</json:string></ark><publicationDate>2014</publicationDate><copyrightDate>2014</copyrightDate><doi><json:string>10.1002/2013JE004517</json:string></doi><id>3B2C589795282C03E2C65C1EED4018972BE73237</id><score>1</score><fulltext><json:item><extension>pdf</extension><original>true</original><mimetype>application/pdf</mimetype><uri>https://api.istex.fr/document/3B2C589795282C03E2C65C1EED4018972BE73237/fulltext/pdf</uri></json:item><json:item><extension>zip</extension><original>false</original><mimetype>application/zip</mimetype><uri>https://api.istex.fr/document/3B2C589795282C03E2C65C1EED4018972BE73237/fulltext/zip</uri></json:item><istex:fulltextTEI uri="https://api.istex.fr/document/3B2C589795282C03E2C65C1EED4018972BE73237/fulltext/tei"><teiHeader><fileDesc><titleStmt><title level="a" type="main">Trace element geochemistry (Li, Ba, Sr, and Rb) using <hi rend="italic">Curiosity</hi>'s ChemCam: Early results for Gale crater from Bradbury Landing Site to Rocknest</title></titleStmt><publicationStmt><authority>ISTEX</authority><publisher>Wiley Publishing Ltd</publisher><availability><licence>©2013. American Geophysical Union. All Rights Reserved.</licence></availability><date type="published" when="2014-01"></date></publicationStmt><notesStmt><note type="content-type" subtype="article" source="article" scheme="https://content-type.data.istex.fr/ark:/67375/XTP-6N5SZHKN-D">article</note><note type="publication-type" subtype="journal" scheme="https://publication-type.data.istex.fr/ark:/67375/JMC-0GLKJH51-B">journal</note></notesStmt><sourceDesc><biblStruct type="article"><analytic><title level="a" type="main">Trace element geochemistry (Li, Ba, Sr, and Rb) using <hi rend="italic">Curiosity</hi>'s ChemCam: Early results for Gale crater from Bradbury Landing Site to Rocknest</title><title level="a" type="short">TRACE ELEMENT RESULTS FOR GALE CRATER</title><author xml:id="author-0000" role="corresp"><persName><forename type="first">Ann M.</forename><surname>Ollila</surname></persName><affiliation><orgName>Institute of Meteoritics</orgName><orgName>Department of Earth and Planetary Sciences</orgName><address><settlement type="city">Albuquerque</settlement><region>New Mexico</region><country key="US">USA</country></address></affiliation><affiliation>Corresponding author: A. M. Ollila, Institute of Meteoritics, Department of Earth and Planetary Sciences, 1 University of New Mexico, MSC03‐2050, Albuquerque, NM 87131‐0001, USA. (aollila@unm.edu)</affiliation></author><author xml:id="author-0001"><persName><forename type="first">Horton E.</forename><surname>Newsom</surname></persName><affiliation><orgName>Institute of Meteoritics</orgName><orgName>Department of Earth and Planetary Sciences</orgName><address><settlement type="city">Albuquerque</settlement><region>New Mexico</region><country key="US">USA</country></address></affiliation></author><author xml:id="author-0002"><persName><genName>III</genName><forename type="first">Benton</forename><surname>Clark</surname></persName><affiliation><orgName>Space Science Institute</orgName><address><settlement type="city">Boulder</settlement><region>Colorado</region><country key="US">USA</country></address></affiliation></author><author xml:id="author-0003"><persName><forename type="first">Roger C.</forename><surname>Wiens</surname></persName><affiliation><orgName>Los Alamos National Laboratory</orgName><address><settlement type="city">Los Alamos</settlement><region>New Mexico</region><country key="US">USA</country></address></affiliation></author><author xml:id="author-0004"><persName><forename type="first">Agnes</forename><surname>Cousin</surname></persName><affiliation><orgName>Los Alamos National Laboratory</orgName><address><settlement type="city">Los Alamos</settlement><region>New Mexico</region><country key="US">USA</country></address></affiliation></author><author xml:id="author-0005"><persName><forename type="first">Jen G.</forename><surname>Blank</surname></persName><affiliation><orgName>NASA Ames Research Center</orgName><address><settlement type="city">Moffett Field</settlement><region>California</region><country key="US">USA</country></address></affiliation></author><author xml:id="author-0006"><persName><forename type="first">Nicolas</forename><surname>Mangold</surname></persName><affiliation><orgName>LPGN, CNRS, UMR6112</orgName><orgName>Université Nantes</orgName><address><settlement type="city">Nantes</settlement><country key="FR">France</country></address></affiliation></author><author xml:id="author-0007"><persName><forename type="first">Violaine</forename><surname>Sautter</surname></persName><affiliation><orgName>Laboratoire de Minéralogie et Cosmochimie du Muséum</orgName><orgName>Muséum National d'Histoire Naturelle</orgName><address><settlement type="city">Paris</settlement><country key="FR">France</country></address></affiliation></author><author xml:id="author-0008"><persName><forename type="first">Sylvestre</forename><surname>Maurice</surname></persName><affiliation><orgName>Institut de Recherche en Astrophysique et Planétologie</orgName><orgName>Université Paul Sabatier</orgName><address><settlement type="city">Toulouse</settlement><country key="FR">France</country></address></affiliation></author><author xml:id="author-0009"><persName><forename type="first">Samuel M.</forename><surname>Clegg</surname></persName><affiliation><orgName>Los Alamos National Laboratory</orgName><address><settlement type="city">Los Alamos</settlement><region>New Mexico</region><country key="US">USA</country></address></affiliation></author><author xml:id="author-0010"><persName><forename type="first">Olivier</forename><surname>Gasnault</surname></persName><affiliation><orgName>Institut de Recherche en Astrophysique et Planétologie</orgName><orgName>Université Paul Sabatier</orgName><address><settlement type="city">Toulouse</settlement><country key="FR">France</country></address></affiliation></author><author xml:id="author-0011"><persName><forename type="first">Olivier</forename><surname>Forni</surname></persName><affiliation><orgName>Institut de Recherche en Astrophysique et Planétologie</orgName><orgName>Université Paul Sabatier</orgName><address><settlement type="city">Toulouse</settlement><country key="FR">France</country></address></affiliation></author><author xml:id="author-0012"><persName><forename type="first">Robert</forename><surname>Tokar</surname></persName><affiliation><orgName>Planetary Science Institute</orgName><address><settlement type="city">Tucson</settlement><region>Arizona</region><country key="US">USA</country></address></affiliation></author><author xml:id="author-0013"><persName><forename type="first">Eric</forename><surname>Lewin</surname></persName><affiliation><orgName>ISTerre</orgName><address><settlement type="city">Grenoble</settlement><country key="FR">France</country></address></affiliation></author><author xml:id="author-0014"><persName><forename type="first">M. Darby</forename><surname>Dyar</surname></persName><affiliation><orgName>Department of Astronomy</orgName><orgName>Mount Holyoke College</orgName><address><settlement type="city">South Hadley</settlement><region>Massachusetts</region><country key="US">USA</country></address></affiliation></author><author xml:id="author-0015"><persName><forename type="first">Jeremie</forename><surname>Lasue</surname></persName><affiliation><orgName>Institut de Recherche en Astrophysique et Planétologie</orgName><orgName>Université Paul Sabatier</orgName><address><settlement type="city">Toulouse</settlement><country key="FR">France</country></address></affiliation></author><author xml:id="author-0016"><persName><forename type="first">Ryan</forename><surname>Anderson</surname></persName><affiliation><orgName>Astrogeology Science Center</orgName><orgName>U.S. Geological Survey</orgName><address><settlement type="city">Flagstaff</settlement><region>Arizona</region><country key="US">USA</country></address></affiliation></author><author xml:id="author-0017"><persName><forename type="first">Scott M.</forename><surname>McLennan</surname></persName><affiliation><orgName>Department of Geosciences</orgName><orgName>State University of New York at Stony Brook</orgName><address><settlement type="city">Stony Brook</settlement><region>New York</region><country key="US">USA</country></address></affiliation></author><author xml:id="author-0018"><persName><forename type="first">John</forename><surname>Bridges</surname></persName><affiliation><orgName>Space Research Centre, Department of Physics and Astronomy</orgName><orgName>University of Leicester</orgName><address><settlement type="city">Leicester</settlement><country key="GB">UK</country></address></affiliation></author><author xml:id="author-0019"><persName><forename type="first">Dave</forename><surname>Vaniman</surname></persName><affiliation><orgName>Planetary Science Institute</orgName><address><settlement type="city">Tucson</settlement><region>Arizona</region><country key="US">USA</country></address></affiliation></author><author xml:id="author-0020"><persName><forename type="first">Nina</forename><surname>Lanza</surname></persName><affiliation><orgName>Los Alamos National Laboratory</orgName><address><settlement type="city">Los Alamos</settlement><region>New Mexico</region><country key="US">USA</country></address></affiliation></author><author xml:id="author-0021"><persName><forename type="first">Cecile</forename><surname>Fabre</surname></persName><affiliation><orgName>GeoResources, CNRS, UMR7356</orgName><orgName>Université de Lorraine</orgName><address><settlement type="city">Vandoeuvre lès Nancy</settlement><country key="FR">France</country></address></affiliation></author><author xml:id="author-0022"><persName><forename type="first">Noureddine</forename><surname>Melikechi</surname></persName><affiliation><orgName>Optical Science Center for Applied Research</orgName><orgName>Delaware State University</orgName><address><settlement type="city">Dover</settlement><region>Delaware</region><country key="US">USA</country></address></affiliation></author><author xml:id="author-0023"><persName><forename type="first">Glynis M.</forename><surname>Perrett</surname></persName><affiliation><orgName>Department of Physics</orgName><orgName>University of Guelph</orgName><address><settlement type="city">Guelph</settlement><region>Ontario</region><country key="CA">Canada</country></address></affiliation></author><author xml:id="author-0024"><persName><forename type="first">John L.</forename><surname>Campbell</surname></persName><affiliation><orgName>Department of Physics</orgName><orgName>University of Guelph</orgName><address><settlement type="city">Guelph</settlement><region>Ontario</region><country key="CA">Canada</country></address></affiliation></author><author xml:id="author-0025"><persName><forename type="first">Penelope L.</forename><surname>King</surname></persName><affiliation><orgName>Department of Physics</orgName><orgName>University of Guelph</orgName><address><settlement type="city">Guelph</settlement><region>Ontario</region><country key="CA">Canada</country></address></affiliation><affiliation><orgName>Research School of Earth Sciences</orgName><orgName>Australian National University</orgName><address><settlement type="city">Canberra</settlement><region>ACT</region><country key="AU">Australia</country></address></affiliation></author><author xml:id="author-0026"><persName><forename type="first">Bruce</forename><surname>Barraclough</surname></persName><affiliation><orgName>Planetary Science Institute</orgName><address><settlement type="city">Tucson</settlement><region>Arizona</region><country key="US">USA</country></address></affiliation></author><author xml:id="author-0027"><persName><forename type="first">Dorothea</forename><surname>Delapp</surname></persName><affiliation><orgName>Los Alamos National Laboratory</orgName><address><settlement type="city">Los Alamos</settlement><region>New Mexico</region><country key="US">USA</country></address></affiliation></author><author xml:id="author-0028"><persName><forename type="first">Stephen</forename><surname>Johnstone</surname></persName><affiliation><orgName>Los Alamos National Laboratory</orgName><address><settlement type="city">Los Alamos</settlement><region>New Mexico</region><country key="US">USA</country></address></affiliation></author><author xml:id="author-0029"><persName><forename type="first">Pierre‐Yves</forename><surname>Meslin</surname></persName><affiliation><orgName>Institut de Recherche en Astrophysique et Planétologie</orgName><orgName>Université Paul Sabatier</orgName><address><settlement type="city">Toulouse</settlement><country key="FR">France</country></address></affiliation></author><author xml:id="author-0030"><persName><forename type="first">Anya</forename><surname>Rosen‐Gooding</surname></persName><affiliation><orgName>Albuquerque Academy</orgName><address><settlement type="city">Albuquerque</settlement><country key="US">New Mexico, USA</country></address></affiliation></author><author xml:id="author-0031"><persName><forename type="first">Josh</forename><surname>Williams</surname></persName><affiliation><orgName>Institute of Meteoritics</orgName><orgName>Department of Earth and Planetary Sciences</orgName><address><settlement type="city">Albuquerque</settlement><region>New Mexico</region><country key="US">USA</country></address></affiliation></author><author xml:id="author-0032"><author><orgName>The MSL Science Team</orgName></author></author><idno type="istex">3B2C589795282C03E2C65C1EED4018972BE73237</idno><idno type="ark">ark:/67375/WNG-36PCPBFC-N</idno><idno type="DOI">10.1002/2013JE004517</idno><idno type="unit">JGRE20193</idno><idno type="society">2013JE004517</idno><idno type="toTypesetVersion">file:JGRE.JGRE20193.pdf</idno></analytic><monogr><title level="j" type="main">Journal of Geophysical Research: Planets</title><title level="j" type="alt">JOURNAL OF GEOPHYSICAL RESEARCH: PLANETS</title><idno type="pISSN">2169-9097</idno><idno type="eISSN">2169-9100</idno><idno type="book-DOI">10.1002/(ISSN)2169-9100</idno><idno type="book-part-DOI">10.1002/jgre.v119.1</idno><idno type="product">JGRE</idno><imprint><biblScope unit="vol">119</biblScope><biblScope unit="issue">1</biblScope><biblScope unit="page" from="255">255</biblScope><biblScope unit="page" to="285">285</biblScope><biblScope unit="page-count">31</biblScope><date type="published" when="2014-01"></date></imprint></monogr></biblStruct></sourceDesc></fileDesc><profileDesc><abstract style="main"><head>Abstract</head><p>The ChemCam instrument package on the Mars rover, <hi rend="italic">Curiosity</hi>, provides new capabilities to probe the abundances of certain trace elements in the rocks and soils on Mars using the laser‐induced breakdown spectroscopy technique. We focus on detecting and quantifying Li, Ba, Rb, and Sr in targets analyzed during the first 100 sols, from Bradbury Landing Site to Rocknest. Univariate peak area models and multivariate partial least squares models are presented. Li, detected for the first time directly on Mars, is generally low (<15 ppm). The lack of soil enrichment in Li, which is highly fluid mobile, is consistent with limited influx of subsurface waters contributing to the upper soils. Localized enrichments of up to ~60 ppm Li have been observed in several rocks but the host mineral for Li is unclear. Bathurst_Inlet is a fine‐grained bedrock unit in which several analysis locations show a decrease in Li and other alkalis with depth, which may imply that the unit has undergone low‐level aqueous alteration that has preferentially drawn the alkalis to the surface. Ba (~1000 ppm) was detected in a buried pebble in the Akaitcho sand ripple and it appears to correlate with Si, Al, Na, and K, indicating a possible feldspathic composition. Rb and Sr are in the conglomerate Link at abundances >100 ppm and >1000 ppm, respectively. These analysis locations tend to have high Si and alkali abundances, consistent with a feldspar composition. Together, these trace element observations provide possible evidence of magma differentiation and aqueous alteration.</p></abstract><abstract style="short"><head>Key Points</head><p><list xml:id="jgre20193-list-0001" style="bulleted"><item>Quantitative models for Li, Ba, Rb and Sr using ChemCam data are presented</item><item>Abundances for the first 100 sols in Gale crater are discussed</item><item>These results represent the first in situ measurements of Li and Ba on Mars</item></list></p></abstract><textClass><keywords><term xml:id="jgre20193-kwd-0001">laser‐induced breakdown spectroscopy</term><term xml:id="jgre20193-kwd-0002">Mars</term><term xml:id="jgre20193-kwd-0003">Gale crater</term><term xml:id="jgre20193-kwd-0004">trace elements</term><term xml:id="jgre20193-kwd-0005">ChemCam</term><term xml:id="jgre20193-kwd-0006">Mars Science Laboratory</term></keywords><classCode scheme="http://psi.agu.org/specialSection/MSLMISSION1">Results from the first 360 sols of the Mars Science Laboratory Mission: Bradbury Landing through Yellowknife Bay</classCode><classCode scheme="http://psi.agu.org/taxonomy5/0600">ELECTROMAGNETICS</classCode><classCode scheme="http://psi.agu.org/taxonomy5/1000">GEOCHEMISTRY</classCode><keywords rend="articleCategory"><term>Research Article</term></keywords><keywords rend="tocHeading1"><term>Research Articles</term></keywords></textClass><langUsage><language ident="en"></language></langUsage></profileDesc></teiHeader></istex:fulltextTEI></fulltext><metadata><istex:metadataXml wicri:clean="Wiley, elements deleted: body"><istex:xmlDeclaration>version="1.0" encoding="UTF-8" standalone="yes"</istex:xmlDeclaration><istex:document><component type="serialArticle" version="2.0" xml:lang="en" xml:id="jgre20193"><header><publicationMeta level="product"><doi>10.1002/(ISSN)2169-9100</doi><issn type="print">2169-9097</issn><issn type="electronic">2169-9100</issn><idGroup><id type="product" value="JGRE"></id></idGroup><titleGroup><title type="main" sort="JOURNAL OF GEOPHYSICAL RESEARCH: PLANETS">Journal of Geophysical Research: Planets</title><title type="short">J. Geophys. Res. Planets</title></titleGroup></publicationMeta><publicationMeta level="part" position="10"><doi>10.1002/jgre.v119.1</doi><copyright>©2014. American Geophysical Union. All Rights Reserved.</copyright><numberingGroup><numbering type="journalVolume" number="119">119</numbering><numbering type="journalIssue">1</numbering></numberingGroup><coverDate startDate="2014-01">January 2014</coverDate></publicationMeta><publicationMeta level="unit" position="180" type="article" status="forIssue"><doi>10.1002/2013JE004517</doi><idGroup><id type="unit" value="JGRE20193"></id><id type="society" value="2013JE004517"></id></idGroup><countGroup><count type="pageTotal" number="31"></count></countGroup><titleGroup><title type="articleCategory">Research Article</title><title type="tocHeading1">Research Articles</title></titleGroup><copyright ownership="publisher">©2013. American Geophysical Union. All Rights Reserved.</copyright><eventGroup><event type="manuscriptReceived" date="2013-09-01"></event><event type="manuscriptRevised" date="2013-12-02"></event><event type="manuscriptAccepted" date="2013-12-06"></event><event type="xmlCreated" agent="SPi Global" date="2013-12-27"></event><event type="publishedOnlineAccepted" date="2013-12-12"></event><event type="publishedOnlineEarlyUnpaginated" date="2014-01-31"></event><event type="publishedOnlineFinalForm" date="2014-02-28"></event><event type="firstOnline" date="2014-01-31"></event><event type="xmlConverted" agent="Converter:WML3G_To_WML3G version:4.7.5 mode:FullText" date="2016-01-30"></event></eventGroup><numberingGroup><numbering type="pageFirst">255</numbering><numbering type="pageLast">285</numbering></numberingGroup><correspondenceTo>Corresponding author: A. M. Ollila, Institute of Meteoritics, Department of Earth and Planetary Sciences, 1 University of New Mexico, MSC03‐2050, Albuquerque, NM 87131‐0001, USA. (<email>aollila@unm.edu</email>)</correspondenceTo><subjectInfo><subject href="http://psi.agu.org/specialSection/MSLMISSION1">Results from the first 360 sols of the Mars Science Laboratory Mission: Bradbury Landing through Yellowknife Bay</subject><subject href="http://psi.agu.org/taxonomy5/0600">ELECTROMAGNETICS</subject><subjectInfo><subject href="http://psi.agu.org/taxonomy5/0694">Instruments and techniques</subject></subjectInfo><subject href="http://psi.agu.org/taxonomy5/1000">GEOCHEMISTRY</subject><subjectInfo><subject href="http://psi.agu.org/taxonomy5/1027">Composition of the planets</subject><subject href="http://psi.agu.org/taxonomy5/1065">Major and trace element geochemistry</subject></subjectInfo></subjectInfo><selfCitationGroup><citation type="self" xml:id="jgre20193-cit-0000"><author><familyName>Ollila</familyName>,
<givenNames>A. M.</givenNames></author>, et al. (<pubYear year="2014">2014</pubYear>), <articleTitle>Trace element geochemistry (Li, Ba, Sr, and Rb) using <i>Curiosity</i>'s ChemCam: Early results for Gale crater from Bradbury Landing Site to Rocknest</articleTitle>, <journalTitle>J. Geophys. Res. Planets</journalTitle>, <vol number="119">119</vol>, <pageFirst>255</pageFirst>–<pageLast>285</pageLast>, doi:<accessionId ref="info:doi/10.1002/2013JE004517">10.1002/2013JE004517</accessionId>.</citation></selfCitationGroup><linkGroup><link type="toTypesetVersion" href="file:JGRE.JGRE20193.pdf"></link></linkGroup></publicationMeta><contentMeta><countGroup><count type="wordTotal" number="19050"></count></countGroup><titleGroup><title type="main">Trace element geochemistry (Li, Ba, Sr, and Rb) using <i>Curiosity</i>'s ChemCam: Early results for Gale crater from Bradbury Landing Site to Rocknest</title><title type="short">TRACE ELEMENT RESULTS FOR GALE CRATER</title><title type="shortAuthors">OLLILA ET AL.</title></titleGroup><creators><creator creatorRole="author" xml:id="jgre20193-cr-0001" affiliationRef="#jgre20193-aff-0001" corresponding="yes"><personName><givenNames>Ann M.</givenNames><familyName>Ollila</familyName></personName></creator><creator creatorRole="author" xml:id="jgre20193-cr-0002" affiliationRef="#jgre20193-aff-0001"><personName><givenNames>Horton E.</givenNames><familyName>Newsom</familyName></personName></creator><creator creatorRole="author" xml:id="jgre20193-cr-0003" affiliationRef="#jgre20193-aff-0002"><personName><givenNames>Benton</givenNames><familyName>Clark</familyName><nameSuffix>III</nameSuffix></personName></creator><creator creatorRole="author" xml:id="jgre20193-cr-0004" affiliationRef="#jgre20193-aff-0003"><personName><givenNames>Roger C.</givenNames><familyName>Wiens</familyName></personName></creator><creator creatorRole="author" xml:id="jgre20193-cr-0005" affiliationRef="#jgre20193-aff-0003"><personName><givenNames>Agnes</givenNames><familyName>Cousin</familyName></personName></creator><creator creatorRole="author" xml:id="jgre20193-cr-0006" affiliationRef="#jgre20193-aff-0004"><personName><givenNames>Jen G.</givenNames><familyName>Blank</familyName></personName></creator><creator creatorRole="author" xml:id="jgre20193-cr-0007" affiliationRef="#jgre20193-aff-0005"><personName><givenNames>Nicolas</givenNames><familyName>Mangold</familyName></personName></creator><creator creatorRole="author" xml:id="jgre20193-cr-0008" affiliationRef="#jgre20193-aff-0006"><personName><givenNames>Violaine</givenNames><familyName>Sautter</familyName></personName></creator><creator creatorRole="author" xml:id="jgre20193-cr-0009" affiliationRef="#jgre20193-aff-0007"><personName><givenNames>Sylvestre</givenNames><familyName>Maurice</familyName></personName></creator><creator creatorRole="author" xml:id="jgre20193-cr-0010" affiliationRef="#jgre20193-aff-0003"><personName><givenNames>Samuel M.</givenNames><familyName>Clegg</familyName></personName></creator><creator creatorRole="author" xml:id="jgre20193-cr-0011" affiliationRef="#jgre20193-aff-0007"><personName><givenNames>Olivier</givenNames><familyName>Gasnault</familyName></personName></creator><creator creatorRole="author" xml:id="jgre20193-cr-0012" affiliationRef="#jgre20193-aff-0007"><personName><givenNames>Olivier</givenNames><familyName>Forni</familyName></personName></creator><creator creatorRole="author" xml:id="jgre20193-cr-0013" affiliationRef="#jgre20193-aff-0008"><personName><givenNames>Robert</givenNames><familyName>Tokar</familyName></personName></creator><creator creatorRole="author" xml:id="jgre20193-cr-0014" affiliationRef="#jgre20193-aff-0009"><personName><givenNames>Eric</givenNames><familyName>Lewin</familyName></personName></creator><creator creatorRole="author" xml:id="jgre20193-cr-0015" affiliationRef="#jgre20193-aff-0010"><personName><givenNames>M. Darby</givenNames><familyName>Dyar</familyName></personName></creator><creator creatorRole="author" xml:id="jgre20193-cr-0016" affiliationRef="#jgre20193-aff-0007"><personName><givenNames>Jeremie</givenNames><familyName>Lasue</familyName></personName></creator><creator creatorRole="author" xml:id="jgre20193-cr-0017" affiliationRef="#jgre20193-aff-0011"><personName><givenNames>Ryan</givenNames><familyName>Anderson</familyName></personName></creator><creator creatorRole="author" xml:id="jgre20193-cr-0018" affiliationRef="#jgre20193-aff-0012"><personName><givenNames>Scott M.</givenNames><familyName>McLennan</familyName></personName></creator><creator creatorRole="author" xml:id="jgre20193-cr-0019" affiliationRef="#jgre20193-aff-0013"><personName><givenNames>John</givenNames><familyName>Bridges</familyName></personName></creator><creator creatorRole="author" xml:id="jgre20193-cr-0020" affiliationRef="#jgre20193-aff-0008"><personName><givenNames>Dave</givenNames><familyName>Vaniman</familyName></personName></creator><creator creatorRole="author" xml:id="jgre20193-cr-0021" affiliationRef="#jgre20193-aff-0003"><personName><givenNames>Nina</givenNames><familyName>Lanza</familyName></personName></creator><creator creatorRole="author" xml:id="jgre20193-cr-0022" affiliationRef="#jgre20193-aff-0014"><personName><givenNames>Cecile</givenNames><familyName>Fabre</familyName></personName></creator><creator creatorRole="author" xml:id="jgre20193-cr-0023" affiliationRef="#jgre20193-aff-0015"><personName><givenNames>Noureddine</givenNames><familyName>Melikechi</familyName></personName></creator><creator creatorRole="author" xml:id="jgre20193-cr-0024" affiliationRef="#jgre20193-aff-0016"><personName><givenNames>Glynis M.</givenNames><familyName>Perrett</familyName></personName></creator><creator creatorRole="author" xml:id="jgre20193-cr-0025" affiliationRef="#jgre20193-aff-0016"><personName><givenNames>John L.</givenNames><familyName>Campbell</familyName></personName></creator><creator creatorRole="author" xml:id="jgre20193-cr-0026" affiliationRef="#jgre20193-aff-0016 #jgre20193-aff-0017"><personName><givenNames>Penelope L.</givenNames><familyName>King</familyName></personName></creator><creator creatorRole="author" xml:id="jgre20193-cr-0027" affiliationRef="#jgre20193-aff-0008"><personName><givenNames>Bruce</givenNames><familyName>Barraclough</familyName></personName></creator><creator creatorRole="author" xml:id="jgre20193-cr-0028" affiliationRef="#jgre20193-aff-0003"><personName><givenNames>Dorothea</givenNames><familyName>Delapp</familyName></personName></creator><creator creatorRole="author" xml:id="jgre20193-cr-0029" affiliationRef="#jgre20193-aff-0003"><personName><givenNames>Stephen</givenNames><familyName>Johnstone</familyName></personName></creator><creator creatorRole="author" xml:id="jgre20193-cr-0030" affiliationRef="#jgre20193-aff-0007"><personName><givenNames>Pierre‐Yves</givenNames><familyName>Meslin</familyName></personName></creator><creator creatorRole="author" xml:id="jgre20193-cr-0031" affiliationRef="#jgre20193-aff-0018"><personName><givenNames>Anya</givenNames><familyName>Rosen‐Gooding</familyName></personName></creator><creator creatorRole="author" xml:id="jgre20193-cr-0032" affiliationRef="#jgre20193-aff-0001"><personName><givenNames>Josh</givenNames><familyName>Williams</familyName></personName></creator><creator creatorRole="author" xml:id="jgre20193-cr-0033"><groupName>The MSL Science Team</groupName></creator></creators><affiliationGroup><affiliation countryCode="US" type="organization" xml:id="jgre20193-aff-0001"><orgDiv>Institute of Meteoritics</orgDiv><orgName>Department of Earth and Planetary Sciences</orgName><address><city>Albuquerque</city><countryPart>New Mexico</countryPart><country>USA</country></address></affiliation><affiliation countryCode="US" type="organization" xml:id="jgre20193-aff-0002"><orgName>Space Science Institute</orgName><address><city>Boulder</city><countryPart>Colorado</countryPart><country>USA</country></address></affiliation><affiliation countryCode="US" type="organization" xml:id="jgre20193-aff-0003"><orgName>Los Alamos National Laboratory</orgName><address><city>Los Alamos</city><countryPart>New Mexico</countryPart><country>USA</country></address></affiliation><affiliation countryCode="US" type="organization" xml:id="jgre20193-aff-0004"><orgName>NASA Ames Research Center</orgName><address><city>Moffett Field</city><countryPart>California</countryPart><country>USA</country></address></affiliation><affiliation countryCode="FR" type="organization" xml:id="jgre20193-aff-0005"><orgDiv>LPGN, CNRS, UMR6112</orgDiv><orgName>Université Nantes</orgName><address><city>Nantes</city><country>France</country></address></affiliation><affiliation countryCode="FR" type="organization" xml:id="jgre20193-aff-0006"><orgDiv>Laboratoire de Minéralogie et Cosmochimie du Muséum</orgDiv><orgName>Muséum National d'Histoire Naturelle</orgName><address><city>Paris</city><country>France</country></address></affiliation><affiliation countryCode="FR" type="organization" xml:id="jgre20193-aff-0007"><orgDiv>Institut de Recherche en Astrophysique et Planétologie</orgDiv><orgName>Université Paul Sabatier</orgName><address><city>Toulouse</city><country>France</country></address></affiliation><affiliation countryCode="US" type="organization" xml:id="jgre20193-aff-0008"><orgName>Planetary Science Institute</orgName><address><city>Tucson</city><countryPart>Arizona</countryPart><country>USA</country></address></affiliation><affiliation countryCode="FR" type="organization" xml:id="jgre20193-aff-0009"><orgName>ISTerre</orgName><address><city>Grenoble</city><country>France</country></address></affiliation><affiliation countryCode="US" type="organization" xml:id="jgre20193-aff-0010"><orgDiv>Department of Astronomy</orgDiv><orgName>Mount Holyoke College</orgName><address><city>South Hadley</city><countryPart>Massachusetts</countryPart><country>USA</country></address></affiliation><affiliation countryCode="US" type="organization" xml:id="jgre20193-aff-0011"><orgDiv>Astrogeology Science Center</orgDiv><orgName>U.S. Geological Survey</orgName><address><city>Flagstaff</city><countryPart>Arizona</countryPart><country>USA</country></address></affiliation><affiliation countryCode="US" type="organization" xml:id="jgre20193-aff-0012"><orgDiv>Department of Geosciences</orgDiv><orgName>State University of New York at Stony Brook</orgName><address><city>Stony Brook</city><countryPart>New York</countryPart><country>USA</country></address></affiliation><affiliation countryCode="GB" type="organization" xml:id="jgre20193-aff-0013"><orgDiv>Space Research Centre, Department of Physics and Astronomy</orgDiv><orgName>University of Leicester</orgName><address><city>Leicester</city><country>UK</country></address></affiliation><affiliation countryCode="FR" type="organization" xml:id="jgre20193-aff-0014"><orgDiv>GeoResources, CNRS, UMR7356</orgDiv><orgName>Université de Lorraine</orgName><address><city>Vandoeuvre lès Nancy</city><country>France</country></address></affiliation><affiliation countryCode="US" type="organization" xml:id="jgre20193-aff-0015"><orgDiv>Optical Science Center for Applied Research</orgDiv><orgName>Delaware State University</orgName><address><city>Dover</city><countryPart>Delaware</countryPart><country>USA</country></address></affiliation><affiliation countryCode="CA" type="organization" xml:id="jgre20193-aff-0016"><orgDiv>Department of Physics</orgDiv><orgName>University of Guelph</orgName><address><city>Guelph</city><countryPart>Ontario</countryPart><country>Canada</country></address></affiliation><affiliation countryCode="AU" type="organization" xml:id="jgre20193-aff-0017"><orgDiv>Research School of Earth Sciences</orgDiv><orgName>Australian National University</orgName><address><city>Canberra</city><countryPart>ACT</countryPart><country>Australia</country></address></affiliation><affiliation countryCode="US" type="organization" xml:id="jgre20193-aff-0018"><orgName>Albuquerque Academy</orgName><address><city>Albuquerque</city><country>New Mexico, USA</country></address></affiliation></affiliationGroup><keywordGroup type="author"><keyword xml:id="jgre20193-kwd-0001">laser‐induced breakdown spectroscopy</keyword><keyword xml:id="jgre20193-kwd-0002">Mars</keyword><keyword xml:id="jgre20193-kwd-0003">Gale crater</keyword><keyword xml:id="jgre20193-kwd-0004">trace elements</keyword><keyword xml:id="jgre20193-kwd-0005">ChemCam</keyword><keyword xml:id="jgre20193-kwd-0006">Mars Science Laboratory</keyword></keywordGroup><abstractGroup><abstract type="main"><title type="main">Abstract</title><p label="1">The ChemCam instrument package on the Mars rover, <i>Curiosity</i>, provides new capabilities to probe the abundances of certain trace elements in the rocks and soils on Mars using the laser‐induced breakdown spectroscopy technique. We focus on detecting and quantifying Li, Ba, Rb, and Sr in targets analyzed during the first 100 sols, from Bradbury Landing Site to Rocknest. Univariate peak area models and multivariate partial least squares models are presented. Li, detected for the first time directly on Mars, is generally low (<15 ppm). The lack of soil enrichment in Li, which is highly fluid mobile, is consistent with limited influx of subsurface waters contributing to the upper soils. Localized enrichments of up to ~60 ppm Li have been observed in several rocks but the host mineral for Li is unclear. Bathurst_Inlet is a fine‐grained bedrock unit in which several analysis locations show a decrease in Li and other alkalis with depth, which may imply that the unit has undergone low‐level aqueous alteration that has preferentially drawn the alkalis to the surface. Ba (~1000 ppm) was detected in a buried pebble in the Akaitcho sand ripple and it appears to correlate with Si, Al, Na, and K, indicating a possible feldspathic composition. Rb and Sr are in the conglomerate Link at abundances >100 ppm and >1000 ppm, respectively. These analysis locations tend to have high Si and alkali abundances, consistent with a feldspar composition. Together, these trace element observations provide possible evidence of magma differentiation and aqueous alteration.</p></abstract><abstract type="short"><title type="main">Key Points</title><p><list style="bulleted" xml:id="jgre20193-list-0001"><listItem xml:id="jgre20193-li-0001">Quantitative models for Li, Ba, Rb and Sr using ChemCam data are presented</listItem><listItem xml:id="jgre20193-li-0002">Abundances for the first 100 sols in Gale crater are discussed</listItem><listItem xml:id="jgre20193-li-0003">These results represent the first in situ measurements of Li and Ba on Mars</listItem></list></p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Trace element geochemistry (Li, Ba, Sr, and Rb) using Curiosity's ChemCam: Early results for Gale crater from Bradbury Landing Site to Rocknest</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>TRACE ELEMENT RESULTS FOR GALE CRATER</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Trace element geochemistry (Li, Ba, Sr, and Rb) using Curiosity's ChemCam: Early results for Gale crater from Bradbury Landing Site to Rocknest</title></titleInfo><name type="personal"><namePart type="given">Ann M.</namePart><namePart type="family">Ollila</namePart><affiliation>Institute of Meteoritics, Department of Earth and Planetary Sciences, New Mexico, Albuquerque, USA</affiliation><affiliation>E-mail: aollila@unm.edu</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Horton E.</namePart><namePart type="family">Newsom</namePart><affiliation>Institute of Meteoritics, Department of Earth and Planetary Sciences, New Mexico, Albuquerque, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Benton</namePart><namePart type="family">Clark III</namePart><affiliation>Space Science Institute, Colorado, Boulder, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Roger C.</namePart><namePart type="family">Wiens</namePart><affiliation>Los Alamos National Laboratory, New Mexico, Los Alamos, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Agnes</namePart><namePart type="family">Cousin</namePart><affiliation>Los Alamos National Laboratory, New Mexico, Los Alamos, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Jen G.</namePart><namePart type="family">Blank</namePart><affiliation>NASA Ames Research Center, California, Moffett Field, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Nicolas</namePart><namePart type="family">Mangold</namePart><affiliation>LPGN, CNRS, UMR6112, Université Nantes, Nantes, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Violaine</namePart><namePart type="family">Sautter</namePart><affiliation>Laboratoire de Minéralogie et Cosmochimie du Muséum, Muséum National d'Histoire Naturelle, Paris, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Sylvestre</namePart><namePart type="family">Maurice</namePart><affiliation>Institut de Recherche en Astrophysique et Planétologie, Université Paul Sabatier, Toulouse, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Samuel M.</namePart><namePart type="family">Clegg</namePart><affiliation>Los Alamos National Laboratory, New Mexico, Los Alamos, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Olivier</namePart><namePart type="family">Gasnault</namePart><affiliation>Institut de Recherche en Astrophysique et Planétologie, Université Paul Sabatier, Toulouse, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Olivier</namePart><namePart type="family">Forni</namePart><affiliation>Institut de Recherche en Astrophysique et Planétologie, Université Paul Sabatier, Toulouse, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Robert</namePart><namePart type="family">Tokar</namePart><affiliation>Planetary Science Institute, Arizona, Tucson, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Eric</namePart><namePart type="family">Lewin</namePart><affiliation>ISTerre, Grenoble, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">M. Darby</namePart><namePart type="family">Dyar</namePart><affiliation>Department of Astronomy, Mount Holyoke College, Massachusetts, South Hadley, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Jeremie</namePart><namePart type="family">Lasue</namePart><affiliation>Institut de Recherche en Astrophysique et Planétologie, Université Paul Sabatier, Toulouse, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Ryan</namePart><namePart type="family">Anderson</namePart><affiliation>Astrogeology Science Center, U.S. Geological Survey, Arizona, Flagstaff, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Scott M.</namePart><namePart type="family">McLennan</namePart><affiliation>Department of Geosciences, State University of New York at Stony Brook, New York, Stony Brook, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">John</namePart><namePart type="family">Bridges</namePart><affiliation>Space Research Centre, Department of Physics and Astronomy, University of Leicester, Leicester, UK</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Dave</namePart><namePart type="family">Vaniman</namePart><affiliation>Planetary Science Institute, Arizona, Tucson, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Nina</namePart><namePart type="family">Lanza</namePart><affiliation>Los Alamos National Laboratory, New Mexico, Los Alamos, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Cecile</namePart><namePart type="family">Fabre</namePart><affiliation>GeoResources, CNRS, UMR7356, Université de Lorraine, Vandoeuvre lès Nancy, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Noureddine</namePart><namePart type="family">Melikechi</namePart><affiliation>Optical Science Center for Applied Research, Delaware State University, Delaware, Dover, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Glynis M.</namePart><namePart type="family">Perrett</namePart><affiliation>Department of Physics, University of Guelph, Ontario, Guelph, Canada</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">John L.</namePart><namePart type="family">Campbell</namePart><affiliation>Department of Physics, University of Guelph, Ontario, Guelph, Canada</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Penelope L.</namePart><namePart type="family">King</namePart><affiliation>Department of Physics, University of Guelph, Guelph, Ontario, Canada</affiliation><affiliation>Research School of Earth Sciences, Australian National University, ACT, Canberra, Australia</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Bruce</namePart><namePart type="family">Barraclough</namePart><affiliation>Planetary Science Institute, Arizona, Tucson, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Dorothea</namePart><namePart type="family">Delapp</namePart><affiliation>Los Alamos National Laboratory, New Mexico, Los Alamos, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Stephen</namePart><namePart type="family">Johnstone</namePart><affiliation>Los Alamos National Laboratory, New Mexico, Los Alamos, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Pierre‐Yves</namePart><namePart type="family">Meslin</namePart><affiliation>Institut de Recherche en Astrophysique et Planétologie, Université Paul Sabatier, Toulouse, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Anya</namePart><namePart type="family">Rosen‐Gooding</namePart><affiliation>Albuquerque Academy, Albuquerque, New Mexico, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Josh</namePart><namePart type="family">Williams</namePart><affiliation>Institute of Meteoritics, Department of Earth and Planetary Sciences, New Mexico, Albuquerque, USA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="corporate"><namePart>The MSL Science Team</namePart></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article" authority="ISTEX" authorityURI="https://content-type.data.istex.fr" valueURI="https://content-type.data.istex.fr/ark:/67375/XTP-6N5SZHKN-D">article</genre><originInfo><publisher>Blackwell Publishing Ltd</publisher><dateIssued encoding="w3cdtf">2014-01</dateIssued><dateCreated encoding="w3cdtf">2013-12-27</dateCreated><dateCaptured encoding="w3cdtf">2013-09-01</dateCaptured><dateValid encoding="w3cdtf">2013-12-06</dateValid><edition>Ollila, A. M., et al. (2014), Trace element geochemistry (Li, Ba, Sr, and Rb) using Curiosity's ChemCam: Early results for Gale crater from Bradbury Landing Site to Rocknest, J. Geophys. Res. Planets, 119, 255–285, doi:10.1002/2013JE004517.</edition><copyrightDate encoding="w3cdtf">2014</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><extent unit="words">19050</extent></physicalDescription><abstract>The ChemCam instrument package on the Mars rover, Curiosity, provides new capabilities to probe the abundances of certain trace elements in the rocks and soils on Mars using the laser‐induced breakdown spectroscopy technique. We focus on detecting and quantifying Li, Ba, Rb, and Sr in targets analyzed during the first 100 sols, from Bradbury Landing Site to Rocknest. Univariate peak area models and multivariate partial least squares models are presented. Li, detected for the first time directly on Mars, is generally low (<15 ppm). The lack of soil enrichment in Li, which is highly fluid mobile, is consistent with limited influx of subsurface waters contributing to the upper soils. Localized enrichments of up to ~60 ppm Li have been observed in several rocks but the host mineral for Li is unclear. Bathurst_Inlet is a fine‐grained bedrock unit in which several analysis locations show a decrease in Li and other alkalis with depth, which may imply that the unit has undergone low‐level aqueous alteration that has preferentially drawn the alkalis to the surface. Ba (~1000 ppm) was detected in a buried pebble in the Akaitcho sand ripple and it appears to correlate with Si, Al, Na, and K, indicating a possible feldspathic composition. Rb and Sr are in the conglomerate Link at abundances >100 ppm and >1000 ppm, respectively. These analysis locations tend to have high Si and alkali abundances, consistent with a feldspar composition. Together, these trace element observations provide possible evidence of magma differentiation and aqueous alteration.</abstract><abstract type="short">Quantitative models for Li, Ba, Rb and Sr using ChemCam data are presented Abundances for the first 100 sols in Gale crater are discussed These results represent the first in situ measurements of Li and Ba on Mars</abstract><subject><genre>keywords</genre><topic>laser‐induced breakdown spectroscopy</topic><topic>Mars</topic><topic>Gale crater</topic><topic>trace elements</topic><topic>ChemCam</topic><topic>Mars Science Laboratory</topic></subject><relatedItem type="host"><titleInfo><title>Journal of Geophysical Research: Planets</title></titleInfo><titleInfo type="abbreviated"><title>J. Geophys. Res. Planets</title></titleInfo><genre type="journal" authority="ISTEX" authorityURI="https://publication-type.data.istex.fr" valueURI="https://publication-type.data.istex.fr/ark:/67375/JMC-0GLKJH51-B">journal</genre><subject><genre>index-terms</genre><topic authorityURI="http://psi.agu.org/specialSection/MSLMISSION1">Results from the first 360 sols of the Mars Science Laboratory Mission: Bradbury Landing through Yellowknife Bay</topic><topic authorityURI="http://psi.agu.org/taxonomy5/0600">ELECTROMAGNETICS</topic><topic authorityURI="http://psi.agu.org/taxonomy5/0694">Instruments and techniques</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1000">GEOCHEMISTRY</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1027">Composition of the planets</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1065">Major and trace element geochemistry</topic></subject><subject><genre>article-category</genre><topic>Research Article</topic></subject><identifier type="ISSN">2169-9097</identifier><identifier type="eISSN">2169-9100</identifier><identifier type="DOI">10.1002/(ISSN)2169-9100</identifier><identifier type="PublisherID">JGRE</identifier><part><date>2014</date><detail type="volume"><caption>vol.</caption><number>119</number></detail><detail type="issue"><caption>no.</caption><number>1</number></detail><extent unit="pages"><start>255</start><end>285</end><total>31</total></extent></part></relatedItem><identifier type="istex">3B2C589795282C03E2C65C1EED4018972BE73237</identifier><identifier type="ark">ark:/67375/WNG-36PCPBFC-N</identifier><identifier type="DOI">10.1002/2013JE004517</identifier><identifier type="ArticleID">JGRE20193</identifier><accessCondition type="use and reproduction" contentType="copyright">©2014. 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