Erratiques de dolomie au cap Colombier, sur la haute côte-nord du Saint-Laurent estuarien
Identifieur interne : 000069 ( PascalFrancis/Curation ); précédent : 000068; suivant : 000070Erratiques de dolomie au cap Colombier, sur la haute côte-nord du Saint-Laurent estuarien
Auteurs : Jean-Claude Dionne [Canada]Source :
- Géogr. Phys. Quat. [ 0705-7199 ] ; 2001.
Descripteurs français
- Pascal (Inist)
- Age absolu, C 14, Cénozoïque, Milieu littoral, Dolomie, Canada Est, Bloc erratique, Coulée, Transport glaciaire, Holocène, Isotope, Holocène inf, Paléoclimatologie, Québec, Isotope radioactif, Estuaire Saint Laurent, Striation, Géochronologie, Stratigraphie, Sédimentation, Pétrologie roche sédimentaire, Milieu, Glaciologie, Géomorphologie, Géochimie, Structure sédimentaire, Irrégularité plan stratification.
- Wicri :
- topic : Géomorphologie, Géochimie.
English descriptors
- KwdEn :
- C-14, Cape Colombier, Cenozoic, Eastern Canada, Holocene, Quebec, Saint Lawrence Estuary, absolute age, bedding plane irregularities, coastal environment, dolostone, environment, erratics, flows, geochemistry, geochronology, geomorphology, glacial transport, glaciology, isotopes, lower Holocene, paleoclimatology, radioactive isotopes, sedimentary petrology, sedimentary structures, sedimentation, stratigraphy, striations.
Abstract
At about 150 km NE of Tadoussac, Cap Colombier is presently the most northeastern site known along the north shore of the lower St. Lawrence estuary where dolostone erratics occur in a significant amount. Over 50 dolostone erratics of various types have been observed in the intertidal clayey zone of Havre du Colombier. The size of clasts ranges from 7 to 320 cm. Although one mega-boulder weighs about 20 metric tons, the remaining erratics are much smaller, the ten largest weighing between 33 and 345 kg. About 12% of the clasts were crystalline pink dolostone and 20% were striated. One brecchiated boulder contained stromatolitic structures. The most likely source is the Mistassini sedimentary basin located about 500 km to the NW. This suggests first a glacial transport by a major ice flow from an ice divide located NW of Lake Mistassini, and second, a release in the Goldthwait Sea by icebergs possibly calved from the glacier tongue located in the Saguenay fjord.
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="fr" level="a">Erratiques de dolomie au cap Colombier, sur la haute côte-nord du Saint-Laurent estuarien</title><author><name sortKey="Dionne, Jean Claude" sort="Dionne, Jean Claude" uniqKey="Dionne J" first="Jean-Claude" last="Dionne">Jean-Claude Dionne</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Université Laval, Département de Géographie</s1><s2>Sainte-Foy, PQ</s2><s3>CAN</s3></inist:fA14><country>Canada</country></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">INIST</idno><idno type="inist">03-0360252</idno><date when="2001">2001</date><idno type="stanalyst">PASCAL 03-0360252 AGI</idno><idno type="RBID">Pascal:03-0360252</idno><idno type="wicri:Area/PascalFrancis/Corpus">000287</idno><idno type="wicri:Area/PascalFrancis/Curation">000069</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="fr" level="a">Erratiques de dolomie au cap Colombier, sur la haute côte-nord du Saint-Laurent estuarien</title><author><name sortKey="Dionne, Jean Claude" sort="Dionne, Jean Claude" uniqKey="Dionne J" first="Jean-Claude" last="Dionne">Jean-Claude Dionne</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Université Laval, Département de Géographie</s1><s2>Sainte-Foy, PQ</s2><s3>CAN</s3></inist:fA14><country>Canada</country></affiliation></author></analytic><series><title level="j" type="abbreviated">Géogr. Phys. Quat.</title><idno type="ISSN">0705-7199</idno><imprint><date when="2001">2001</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="abbreviated">Géogr. Phys. Quat.</title><idno type="ISSN">0705-7199</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>C-14</term><term>Cape Colombier</term><term>Cenozoic</term><term>Eastern Canada</term><term>Holocene</term><term>Quebec</term><term>Saint Lawrence Estuary</term><term>absolute age</term><term>bedding plane irregularities</term><term>coastal environment</term><term>dolostone</term><term>environment</term><term>erratics</term><term>flows</term><term>geochemistry</term><term>geochronology</term><term>geomorphology</term><term>glacial transport</term><term>glaciology</term><term>isotopes</term><term>lower Holocene</term><term>paleoclimatology</term><term>radioactive isotopes</term><term>sedimentary petrology</term><term>sedimentary structures</term><term>sedimentation</term><term>stratigraphy</term><term>striations</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Age absolu</term><term>C 14</term><term>Cénozoïque</term><term>Milieu littoral</term><term>Dolomie</term><term>Canada Est</term><term>Bloc erratique</term><term>Coulée</term><term>Transport glaciaire</term><term>Holocène</term><term>Isotope</term><term>Holocène inf</term><term>Paléoclimatologie</term><term>Québec</term><term>Isotope radioactif</term><term>Estuaire Saint Laurent</term><term>Striation</term><term>Géochronologie</term><term>Stratigraphie</term><term>Sédimentation</term><term>Pétrologie roche sédimentaire</term><term>Milieu</term><term>Glaciologie</term><term>Géomorphologie</term><term>Géochimie</term><term>Structure sédimentaire</term><term>Irrégularité plan stratification</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Géomorphologie</term><term>Géochimie</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">At about 150 km NE of Tadoussac, Cap Colombier is presently the most northeastern site known along the north shore of the lower St. Lawrence estuary where dolostone erratics occur in a significant amount. Over 50 dolostone erratics of various types have been observed in the intertidal clayey zone of Havre du Colombier. The size of clasts ranges from 7 to 320 cm. Although one mega-boulder weighs about 20 metric tons, the remaining erratics are much smaller, the ten largest weighing between 33 and 345 kg. About 12% of the clasts were crystalline pink dolostone and 20% were striated. One brecchiated boulder contained stromatolitic structures. The most likely source is the Mistassini sedimentary basin located about 500 km to the NW. This suggests first a glacial transport by a major ice flow from an ice divide located NW of Lake Mistassini, and second, a release in the Goldthwait Sea by icebergs possibly calved from the glacier tongue located in the Saguenay fjord.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0705-7199</s0></fA01><fA03 i2="1"><s0>Géogr. Phys. Quat.</s0></fA03><fA05><s2>55</s2></fA05><fA06><s2>1</s2></fA06><fA08 i1="01" i2="1" l="FRE"><s1>Erratiques de dolomie au cap Colombier, sur la haute côte-nord du Saint-Laurent estuarien</s1></fA08><fA11 i1="01" i2="1"><s1>DIONNE (Jean-Claude)</s1></fA11><fA14 i1="01"><s1>Université Laval, Département de Géographie</s1><s2>Sainte-Foy, PQ</s2><s3>CAN</s3></fA14><fA20><s1>101-107</s1><s7>4</s7></fA20><fA21><s1>2001</s1></fA21><fA23 i1="01"><s0>FRE</s0></fA23><fA24 i1="01"><s0>eng</s0></fA24><fA43 i1="01"><s1>AGI</s1></fA43><fA44><s0>6000</s0></fA44><fA45><s0>22 ref.</s0></fA45><fA47 i1="01" i2="1"><s0>03-0360252</s0></fA47><fA60><s1>P</s1></fA60><fA61><s0>A</s0></fA61><fA66 i1="01"><s0>CAN</s0></fA66><fA68 i1="01" i2="1" l="ENG"><s1>Dolostone erratics at Cape Colombier, upper north coast of the Saint Lawrence Estuary</s1></fA68><fC01 i1="01" l="ENG"><s0>At about 150 km NE of Tadoussac, Cap Colombier is presently the most northeastern site known along the north shore of the lower St. Lawrence estuary where dolostone erratics occur in a significant amount. Over 50 dolostone erratics of various types have been observed in the intertidal clayey zone of Havre du Colombier. The size of clasts ranges from 7 to 320 cm. Although one mega-boulder weighs about 20 metric tons, the remaining erratics are much smaller, the ten largest weighing between 33 and 345 kg. About 12% of the clasts were crystalline pink dolostone and 20% were striated. One brecchiated boulder contained stromatolitic structures. The most likely source is the Mistassini sedimentary basin located about 500 km to the NW. This suggests first a glacial transport by a major ice flow from an ice divide located NW of Lake Mistassini, and second, a release in the Goldthwait Sea by icebergs possibly calved from the glacier tongue located in the Saguenay fjord.</s0></fC01><fC02 i1="01" i2="2"><s0>226C02</s0></fC02><fC02 i1="02" i2="2"><s0>223A01</s0></fC02><fC02 i1="03" i2="X"><s0>001E01P02</s0></fC02><fC02 i1="04" i2="X"><s0>001E01G01</s0></fC02><fC03 i1="01" i2="2" l="FRE"><s0>Age absolu</s0></fC03><fC03 i1="01" i2="2" l="ENG"><s0>absolute age</s0></fC03><fC03 i1="02" i2="2" l="FRE"><s0>C 14</s0></fC03><fC03 i1="02" i2="2" l="ENG"><s0>C-14</s0></fC03><fC03 i1="02" i2="2" l="SPA"><s0>C 14</s0></fC03><fC03 i1="03" i2="2" l="FRE"><s0>Cénozoïque</s0><s2>NX</s2></fC03><fC03 i1="03" i2="2" l="ENG"><s0>Cenozoic</s0><s2>NX</s2></fC03><fC03 i1="03" i2="2" l="SPA"><s0>Cenozoico</s0><s2>NX</s2></fC03><fC03 i1="04" i2="2" l="FRE"><s0>Milieu littoral</s0></fC03><fC03 i1="04" i2="2" l="ENG"><s0>coastal 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i2="2" l="SPA"><s0>Isótopo radioactivo</s0></fC03><fC03 i1="16" i2="2" l="FRE"><s0>Estuaire Saint Laurent</s0><s2>NG</s2></fC03><fC03 i1="16" i2="2" l="ENG"><s0>Saint Lawrence Estuary</s0><s2>NG</s2></fC03><fC03 i1="16" i2="2" l="SPA"><s0>Estuario San Lorenzo</s0><s2>NG</s2></fC03><fC03 i1="17" i2="2" l="FRE"><s0>Striation</s0></fC03><fC03 i1="17" i2="2" l="ENG"><s0>striations</s0></fC03><fC03 i1="17" i2="2" l="SPA"><s0>Estriación</s0></fC03><fC03 i1="18" i2="2" l="FRE"><s0>Géochronologie</s0></fC03><fC03 i1="18" i2="2" l="ENG"><s0>geochronology</s0></fC03><fC03 i1="18" i2="2" l="SPA"><s0>Geocronología</s0></fC03><fC03 i1="19" i2="2" l="FRE"><s0>Stratigraphie</s0></fC03><fC03 i1="19" i2="2" l="ENG"><s0>stratigraphy</s0></fC03><fC03 i1="19" i2="2" l="SPA"><s0>Estratigrafía</s0></fC03><fC03 i1="20" i2="2" l="FRE"><s0>Sédimentation</s0></fC03><fC03 i1="20" i2="2" l="ENG"><s0>sedimentation</s0></fC03><fC03 i1="20" i2="2" l="SPA"><s0>Sedimentación</s0></fC03><fC03 i1="21" i2="2" 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