Mantle: More HIMU in the future?
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Auteurs : Ph VidalSource :
- Geochimica et Cosmochimica Acta [ 0016-7037 ] ; 1992.
Abstract
High μ (HIMU) islands such as St. Helena in the southern Atlantic Ocean, and Tubuaii and Mangaia in the Australes (Polynesia), are known for having mantle sources relatively enriched in some high field-strength elements (HFSE) such as Nb, and, as deduced from their extremely enriched lead isotopic compositions, long-lived high UPb (μ) ratios.A second group of HIMU mantle reservoirs is well identified in the Pacific Ocean, at Ua Pou (Marquesas), Mururoa and Fangataufa (Gambiers), Guadalupe; and in the Atlantic Ocean, in the New England seamounts, Azores, Cape Verde, and Canarias. In contrast to Group I, these exhibit a much less pronounced enrichment in radiogenic lead due to only a recent increase in the μ ratio, whereas HFSE enrichment and lead depletion (as visible from high CePb ratios) are more pronounced than in Group I.If the HIMU reservoir is related to recycling of subducted lithosphere impoverished by dehydration in some elements enriched in arc magmas, the evolution of the thermal régime in subduction zones makes the HIMU reservoir progressively more abundant with time. During the early to middle Precambrian, a large part of the subducted lithosphere was melted; hence the residue recycled in the mantle was not sufficiently fertile to allow further basaltic melt extraction. In contrast, in modern, cooler subduction zones, dehydration and the subsequent extraction by fluids of mobile elements leaves behind a fertile residue.
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DOI: 10.1016/0016-7037(92)90269-O
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<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title>Mantle: More HIMU in the future?</title><author><name sortKey="Vidal, Ph" sort="Vidal, Ph" uniqKey="Vidal P" first="Ph" last="Vidal">Ph Vidal</name><affiliation><mods:affiliation>URA 10 CNRS and Université Blaise Pascal, 5 rue Kessler, 63038 Clermont-Ferrand Cedex, France</mods:affiliation></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:6AF7932FEC70D89AC13140669A11F7B03AC503A9</idno><date when="1992" year="1992">1992</date><idno type="doi">10.1016/0016-7037(92)90269-O</idno><idno type="url">https://api.istex.fr/document/6AF7932FEC70D89AC13140669A11F7B03AC503A9/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">000F15</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">000F15</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a">Mantle: More HIMU in the future?</title><author><name sortKey="Vidal, Ph" sort="Vidal, Ph" uniqKey="Vidal P" first="Ph" last="Vidal">Ph Vidal</name><affiliation><mods:affiliation>URA 10 CNRS and Université Blaise Pascal, 5 rue Kessler, 63038 Clermont-Ferrand Cedex, France</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j">Geochimica et Cosmochimica Acta</title><title level="j" type="abbrev">GCA</title><idno type="ISSN">0016-7037</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1992">1992</date><biblScope unit="volume">56</biblScope><biblScope unit="issue">12</biblScope><biblScope unit="page" from="4295">4295</biblScope><biblScope unit="page" to="4299">4299</biblScope></imprint><idno type="ISSN">0016-7037</idno></series><idno type="istex">6AF7932FEC70D89AC13140669A11F7B03AC503A9</idno><idno type="DOI">10.1016/0016-7037(92)90269-O</idno><idno type="PII">0016-7037(92)90269-O</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0016-7037</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">High μ (HIMU) islands such as St. Helena in the southern Atlantic Ocean, and Tubuaii and Mangaia in the Australes (Polynesia), are known for having mantle sources relatively enriched in some high field-strength elements (HFSE) such as Nb, and, as deduced from their extremely enriched lead isotopic compositions, long-lived high UPb (μ) ratios.A second group of HIMU mantle reservoirs is well identified in the Pacific Ocean, at Ua Pou (Marquesas), Mururoa and Fangataufa (Gambiers), Guadalupe; and in the Atlantic Ocean, in the New England seamounts, Azores, Cape Verde, and Canarias. In contrast to Group I, these exhibit a much less pronounced enrichment in radiogenic lead due to only a recent increase in the μ ratio, whereas HFSE enrichment and lead depletion (as visible from high CePb ratios) are more pronounced than in Group I.If the HIMU reservoir is related to recycling of subducted lithosphere impoverished by dehydration in some elements enriched in arc magmas, the evolution of the thermal régime in subduction zones makes the HIMU reservoir progressively more abundant with time. During the early to middle Precambrian, a large part of the subducted lithosphere was melted; hence the residue recycled in the mantle was not sufficiently fertile to allow further basaltic melt extraction. In contrast, in modern, cooler subduction zones, dehydration and the subsequent extraction by fluids of mobile elements leaves behind a fertile residue.</div></front></TEI><istex><corpusName>elsevier</corpusName><author><json:item><name>Ph Vidal</name><affiliations><json:string>URA 10 CNRS and Université Blaise Pascal, 5 rue Kessler, 63038 Clermont-Ferrand Cedex, France</json:string></affiliations></json:item></author><language><json:string>eng</json:string></language><originalGenre><json:string>Discussion</json:string></originalGenre><abstract>High μ (HIMU) islands such as St. Helena in the southern Atlantic Ocean, and Tubuaii and Mangaia in the Australes (Polynesia), are known for having mantle sources relatively enriched in some high field-strength elements (HFSE) such as Nb, and, as deduced from their extremely enriched lead isotopic compositions, long-lived high UPb (μ) ratios.A second group of HIMU mantle reservoirs is well identified in the Pacific Ocean, at Ua Pou (Marquesas), Mururoa and Fangataufa (Gambiers), Guadalupe; and in the Atlantic Ocean, in the New England seamounts, Azores, Cape Verde, and Canarias. In contrast to Group I, these exhibit a much less pronounced enrichment in radiogenic lead due to only a recent increase in the μ ratio, whereas HFSE enrichment and lead depletion (as visible from high CePb ratios) are more pronounced than in Group I.If the HIMU reservoir is related to recycling of subducted lithosphere impoverished by dehydration in some elements enriched in arc magmas, the evolution of the thermal régime in subduction zones makes the HIMU reservoir progressively more abundant with time. During the early to middle Precambrian, a large part of the subducted lithosphere was melted; hence the residue recycled in the mantle was not sufficiently fertile to allow further basaltic melt extraction. In contrast, in modern, cooler subduction zones, dehydration and the subsequent extraction by fluids of mobile elements leaves behind a fertile residue.</abstract><qualityIndicators><score>6.059</score><pdfVersion>1.2</pdfVersion><pdfPageSize>576 x 792 pts</pdfPageSize><refBibsNative>true</refBibsNative><keywordCount>0</keywordCount><abstractCharCount>1456</abstractCharCount><pdfWordCount>3347</pdfWordCount><pdfCharCount>20274</pdfCharCount><pdfPageCount>5</pdfPageCount><abstractWordCount>226</abstractWordCount></qualityIndicators><title>Mantle: More HIMU in the future?</title><pii><json:string>0016-7037(92)90269-O</json:string></pii><refBibs><json:item><author><json:item><name>D Abbott</name></json:item><json:item><name>L Burgess</name></json:item></author><host><volume>71</volume><pages><first>1714</first></pages><author></author><title>Eos</title></host><title>The probability of melting Archean subducting plates</title></json:item><json:item><author><json:item><name>C.J Allȩgre</name></json:item><json:item><name>M Condomines</name></json:item></author><host><volume>299</volume><pages><last>24</last><first>21</first></pages><author></author><title>Nature</title></host><title>Basalt genesis and mantle structure studied through Th isotopic geochemistry</title></json:item><json:item><author><json:item><name>D.J Chaffey</name></json:item><json:item><name>R.A Cliff</name></json:item><json:item><name>B.M Wilson</name></json:item></author><host><author></author><title>GSA Spec. 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Sci.</title></host><title>Chemical geodynamics</title></json:item><json:item><author><json:item><name>A Zindler</name></json:item><json:item><name>E Jagoutz</name></json:item><json:item><name>S Goldstein</name></json:item></author><host><volume>298</volume><pages><last>523</last><first>519</first></pages><author></author><title>Nature</title></host><title>Nd, Sr, and Pb isotopic systematics in a three-component mantle: A new perspective</title></json:item></refBibs><genre><json:string>article</json:string></genre><serie><pages><last>276</last><first>257</first></pages><language><json:string>unknown</json:string></language><title>Magmatism in the Ocean Basins</title></serie><host><volume>56</volume><pii><json:string>S0016-7037(00)X0306-7</json:string></pii><pages><last>4299</last><first>4295</first></pages><issn><json:string>0016-7037</json:string></issn><issue>12</issue><genre><json:string>journal</json:string></genre><language><json:string>unknown</json:string></language><title>Geochimica et Cosmochimica Acta</title><publicationDate>1992</publicationDate></host><categories><wos><json:string>science</json:string><json:string>geochemistry & geophysics</json:string></wos><scienceMetrix><json:string>natural sciences</json:string><json:string>earth & environmental sciences</json:string><json:string>geochemistry & geophysics</json:string></scienceMetrix></categories><publicationDate>1992</publicationDate><copyrightDate>1992</copyrightDate><doi><json:string>10.1016/0016-7037(92)90269-O</json:string></doi><id>6AF7932FEC70D89AC13140669A11F7B03AC503A9</id><score>0.15322663</score><fulltext><json:item><extension>pdf</extension><original>true</original><mimetype>application/pdf</mimetype><uri>https://api.istex.fr/document/6AF7932FEC70D89AC13140669A11F7B03AC503A9/fulltext/pdf</uri></json:item><json:item><extension>zip</extension><original>false</original><mimetype>application/zip</mimetype><uri>https://api.istex.fr/document/6AF7932FEC70D89AC13140669A11F7B03AC503A9/fulltext/zip</uri></json:item><istex:fulltextTEI uri="https://api.istex.fr/document/6AF7932FEC70D89AC13140669A11F7B03AC503A9/fulltext/tei"><teiHeader><fileDesc><titleStmt><title level="a">Mantle: More HIMU in the future?</title></titleStmt><publicationStmt><authority>ISTEX</authority><publisher>ELSEVIER</publisher><availability><p>ELSEVIER</p></availability><date>1992</date></publicationStmt><notesStmt><note type="content">Section title: Scientific comment</note></notesStmt><sourceDesc><biblStruct type="inbook"><analytic><title level="a">Mantle: More HIMU in the future?</title><author xml:id="author-1"><persName><forename type="first">Ph</forename><surname>Vidal</surname></persName><affiliation>URA 10 CNRS and Université Blaise Pascal, 5 rue Kessler, 63038 Clermont-Ferrand Cedex, France</affiliation></author></analytic><monogr><title level="j">Geochimica et Cosmochimica Acta</title><title level="j" type="abbrev">GCA</title><idno type="pISSN">0016-7037</idno><idno type="PII">S0016-7037(00)X0306-7</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1992"></date><biblScope unit="volume">56</biblScope><biblScope unit="issue">12</biblScope><biblScope unit="page" from="4295">4295</biblScope><biblScope unit="page" to="4299">4299</biblScope></imprint></monogr><idno type="istex">6AF7932FEC70D89AC13140669A11F7B03AC503A9</idno><idno type="DOI">10.1016/0016-7037(92)90269-O</idno><idno type="PII">0016-7037(92)90269-O</idno></biblStruct></sourceDesc></fileDesc><profileDesc><creation><date>1992</date></creation><langUsage><language ident="en">en</language></langUsage><abstract xml:lang="en"><p>High μ (HIMU) islands such as St. Helena in the southern Atlantic Ocean, and Tubuaii and Mangaia in the Australes (Polynesia), are known for having mantle sources relatively enriched in some high field-strength elements (HFSE) such as Nb, and, as deduced from their extremely enriched lead isotopic compositions, long-lived high UPb (μ) ratios.A second group of HIMU mantle reservoirs is well identified in the Pacific Ocean, at Ua Pou (Marquesas), Mururoa and Fangataufa (Gambiers), Guadalupe; and in the Atlantic Ocean, in the New England seamounts, Azores, Cape Verde, and Canarias. In contrast to Group I, these exhibit a much less pronounced enrichment in radiogenic lead due to only a recent increase in the μ ratio, whereas HFSE enrichment and lead depletion (as visible from high CePb ratios) are more pronounced than in Group I.If the HIMU reservoir is related to recycling of subducted lithosphere impoverished by dehydration in some elements enriched in arc magmas, the evolution of the thermal régime in subduction zones makes the HIMU reservoir progressively more abundant with time. During the early to middle Precambrian, a large part of the subducted lithosphere was melted; hence the residue recycled in the mantle was not sufficiently fertile to allow further basaltic melt extraction. In contrast, in modern, cooler subduction zones, dehydration and the subsequent extraction by fluids of mobile elements leaves behind a fertile residue.</p></abstract></profileDesc><revisionDesc><change when="1992">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/6AF7932FEC70D89AC13140669A11F7B03AC503A9/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Elsevier, elements deleted: tail"><istex:xmlDeclaration>version="1.0" encoding="utf-8"</istex:xmlDeclaration><istex:docType PUBLIC="-//ES//DTD journal article DTD version 4.5.2//EN//XML" URI="art452.dtd" name="istex:docType"></istex:docType><istex:document><converted-article version="4.5.2" docsubtype="dis"><item-info><jid>GCA</jid><aid>9290269O</aid><ce:pii>0016-7037(92)90269-O</ce:pii><ce:doi>10.1016/0016-7037(92)90269-O</ce:doi><ce:copyright type="unknown" year="1992"></ce:copyright></item-info><head><ce:dochead><ce:textfn>Scientific comment</ce:textfn></ce:dochead><ce:title>Mantle: More HIMU in the future?</ce:title><ce:author-group><ce:author><ce:given-name>Ph</ce:given-name><ce:surname>Vidal</ce:surname></ce:author><ce:affiliation><ce:textfn>URA 10 CNRS and Université Blaise Pascal, 5 rue Kessler, 63038 Clermont-Ferrand Cedex, France</ce:textfn></ce:affiliation></ce:author-group><ce:date-received day="22" month="2" year="1991"></ce:date-received><ce:date-accepted day="20" month="5" year="1992"></ce:date-accepted><ce:abstract><ce:section-title>Abstract</ce:section-title><ce:abstract-sec><ce:simple-para>High μ (HIMU) islands such as St. Helena in the southern Atlantic Ocean, and Tubuaii and Mangaia in the Australes (Polynesia), are known for having mantle sources relatively enriched in some high field-strength elements (HFSE) such as Nb, and, as deduced from their extremely enriched lead isotopic compositions, long-lived high <math altimg="si1.gif"><fr shape="sol"><nu>U</nu><de>Pb</de></fr></math> (μ) ratios.</ce:simple-para><ce:simple-para>A second group of HIMU mantle reservoirs is well identified in the Pacific Ocean, at Ua Pou (Marquesas), Mururoa and Fangataufa (Gambiers), Guadalupe; and in the Atlantic Ocean, in the New England seamounts, Azores, Cape Verde, and Canarias. In contrast to Group I, these exhibit a much less pronounced enrichment in radiogenic lead due to only a recent increase in the μ ratio, whereas HFSE enrichment and lead depletion (as visible from high <math altimg="si2.gif"><fr shape="sol"><nu>Ce</nu><de>Pb</de></fr></math> ratios) are more pronounced than in Group I.</ce:simple-para><ce:simple-para>If the HIMU reservoir is related to recycling of subducted lithosphere impoverished by dehydration in some elements enriched in arc magmas, the evolution of the thermal régime in subduction zones makes the HIMU reservoir progressively more abundant with time. During the early to middle Precambrian, a large part of the subducted lithosphere was melted; hence the residue recycled in the mantle was not sufficiently fertile to allow further basaltic melt extraction. In contrast, in modern, cooler subduction zones, dehydration and the subsequent extraction by fluids of mobile elements leaves behind a fertile residue.</ce:simple-para></ce:abstract-sec></ce:abstract></head></converted-article></istex:document></istex:metadataXml><mods version="3.6"><titleInfo><title>Mantle: More HIMU in the future?</title></titleInfo><titleInfo type="alternative" contentType="CDATA"><title>Mantle: More HIMU in the future?</title></titleInfo><name type="personal"><namePart type="given">Ph</namePart><namePart type="family">Vidal</namePart><affiliation>URA 10 CNRS and Université Blaise Pascal, 5 rue Kessler, 63038 Clermont-Ferrand Cedex, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="Discussion"></genre><originInfo><publisher>ELSEVIER</publisher><dateIssued encoding="w3cdtf">1992</dateIssued><copyrightDate encoding="w3cdtf">1992</copyrightDate></originInfo><language><languageTerm type="code" authority="iso639-2b">eng</languageTerm><languageTerm type="code" authority="rfc3066">en</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType></physicalDescription><abstract lang="en">High μ (HIMU) islands such as St. Helena in the southern Atlantic Ocean, and Tubuaii and Mangaia in the Australes (Polynesia), are known for having mantle sources relatively enriched in some high field-strength elements (HFSE) such as Nb, and, as deduced from their extremely enriched lead isotopic compositions, long-lived high UPb (μ) ratios.A second group of HIMU mantle reservoirs is well identified in the Pacific Ocean, at Ua Pou (Marquesas), Mururoa and Fangataufa (Gambiers), Guadalupe; and in the Atlantic Ocean, in the New England seamounts, Azores, Cape Verde, and Canarias. In contrast to Group I, these exhibit a much less pronounced enrichment in radiogenic lead due to only a recent increase in the μ ratio, whereas HFSE enrichment and lead depletion (as visible from high CePb ratios) are more pronounced than in Group I.If the HIMU reservoir is related to recycling of subducted lithosphere impoverished by dehydration in some elements enriched in arc magmas, the evolution of the thermal régime in subduction zones makes the HIMU reservoir progressively more abundant with time. During the early to middle Precambrian, a large part of the subducted lithosphere was melted; hence the residue recycled in the mantle was not sufficiently fertile to allow further basaltic melt extraction. In contrast, in modern, cooler subduction zones, dehydration and the subsequent extraction by fluids of mobile elements leaves behind a fertile residue.</abstract><note type="content">Section title: Scientific comment</note><relatedItem type="host"><titleInfo><title>Geochimica et Cosmochimica Acta</title></titleInfo><titleInfo type="abbreviated"><title>GCA</title></titleInfo><genre type="journal">journal</genre><originInfo><dateIssued encoding="w3cdtf">199212</dateIssued></originInfo><identifier type="ISSN">0016-7037</identifier><identifier type="PII">S0016-7037(00)X0306-7</identifier><part><date>199212</date><detail type="volume"><number>56</number><caption>vol.</caption></detail><detail type="issue"><number>12</number><caption>no.</caption></detail><extent unit="issue pages"><start>4123</start><end>4382</end></extent><extent unit="pages"><start>4295</start><end>4299</end></extent></part></relatedItem><identifier type="istex">6AF7932FEC70D89AC13140669A11F7B03AC503A9</identifier><identifier type="DOI">10.1016/0016-7037(92)90269-O</identifier><identifier type="PII">0016-7037(92)90269-O</identifier><recordInfo><recordContentSource>ELSEVIER</recordContentSource></recordInfo></mods></metadata></istex></record>Pour manipuler ce document sous Unix (Dilib)
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