The glaciogenic origin of the Pleistocene calcareous dust in Argentina on the basis of field, mineralogical, textural, and geochemical analyses
International audience Calcareous dust occurs in Argentina as layers and pockets closely associated with Pleistocene deposits and periglacial features from southernmost Patagonia to at least the Mendoza Precordillera and has been traditionally interpreted as a soil horizon resulting from postdeposit...
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ftccsdartic:oai:HAL:hal-02047310v1 2023-05-15T14:02:51+02:00 The glaciogenic origin of the Pleistocene calcareous dust in Argentina on the basis of field, mineralogical, textural, and geochemical analyses Vogt, Thea CLAUER, Norbert Techer, Isabelle Université Louis Pasteur - Strasbourg I Institut de physique du globe de Strasbourg (IPGS) Université de Strasbourg (UNISTRA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Université de Nîmes (UNIMES) 2019-01 https://hal.archives-ouvertes.fr/hal-02047310 https://hal.archives-ouvertes.fr/hal-02047310/document https://hal.archives-ouvertes.fr/hal-02047310/file/Quat.%20Res.%202018%20Vogt.pdf https://doi.org/10.1017/qua.2018.74 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1017/qua.2018.74 hal-02047310 https://hal.archives-ouvertes.fr/hal-02047310 https://hal.archives-ouvertes.fr/hal-02047310/document https://hal.archives-ouvertes.fr/hal-02047310/file/Quat.%20Res.%202018%20Vogt.pdf doi:10.1017/qua.2018.74 info:eu-repo/semantics/OpenAccess ISSN: 0033-5894 EISSN: 1096-0287 Quaternary Research https://hal.archives-ouvertes.fr/hal-02047310 Quaternary Research, Elsevier, 2019, 91 (1), pp.218-233. ⟨10.1017/qua.2018.74⟩ Calcareous dust Cryogenic calcite Pleistocene Palaeoenvironments Argentina [SDU]Sciences of the Universe [physics] [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology info:eu-repo/semantics/article Journal articles 2019 ftccsdartic https://doi.org/10.1017/qua.2018.74 2021-11-07T02:12:01Z International audience Calcareous dust occurs in Argentina as layers and pockets closely associated with Pleistocene deposits and periglacial features from southernmost Patagonia to at least the Mendoza Precordillera and has been traditionally interpreted as a soil horizon resulting from postdepositional pedogenesis during interglacials. Detailed field and microscopic observations and sedimentological and geochemical analyses of more than 100 samples collected from lower to upper Pleistocene deposits between 51°S and 33°S and from near sea level to 2800 m asl allow us to interpret the dust as synchronous with the host sediment. All observations and analyses lead us to conclude that: (1) the cryogenic morphology and the chemical signatures of the calcite component show that the dust is glaciogenic, (2) the dust was carried by southeasterly Antarctic winds, and (3) it was deposited over most of southern and central Argentina. Field observations, geomorphic evidence, and radiocarbon dates suggest that the dust was deposited during several Pleistocene glacial episodes. Article in Journal/Newspaper Antarc* Antarctic Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Antarctic Argentina Patagonia Quaternary Research 91 1 218 233 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
Calcareous dust Cryogenic calcite Pleistocene Palaeoenvironments Argentina [SDU]Sciences of the Universe [physics] [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
spellingShingle |
Calcareous dust Cryogenic calcite Pleistocene Palaeoenvironments Argentina [SDU]Sciences of the Universe [physics] [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology Vogt, Thea CLAUER, Norbert Techer, Isabelle The glaciogenic origin of the Pleistocene calcareous dust in Argentina on the basis of field, mineralogical, textural, and geochemical analyses |
topic_facet |
Calcareous dust Cryogenic calcite Pleistocene Palaeoenvironments Argentina [SDU]Sciences of the Universe [physics] [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
description |
International audience Calcareous dust occurs in Argentina as layers and pockets closely associated with Pleistocene deposits and periglacial features from southernmost Patagonia to at least the Mendoza Precordillera and has been traditionally interpreted as a soil horizon resulting from postdepositional pedogenesis during interglacials. Detailed field and microscopic observations and sedimentological and geochemical analyses of more than 100 samples collected from lower to upper Pleistocene deposits between 51°S and 33°S and from near sea level to 2800 m asl allow us to interpret the dust as synchronous with the host sediment. All observations and analyses lead us to conclude that: (1) the cryogenic morphology and the chemical signatures of the calcite component show that the dust is glaciogenic, (2) the dust was carried by southeasterly Antarctic winds, and (3) it was deposited over most of southern and central Argentina. Field observations, geomorphic evidence, and radiocarbon dates suggest that the dust was deposited during several Pleistocene glacial episodes. |
author2 |
Université Louis Pasteur - Strasbourg I Institut de physique du globe de Strasbourg (IPGS) Université de Strasbourg (UNISTRA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Université de Nîmes (UNIMES) |
format |
Article in Journal/Newspaper |
author |
Vogt, Thea CLAUER, Norbert Techer, Isabelle |
author_facet |
Vogt, Thea CLAUER, Norbert Techer, Isabelle |
author_sort |
Vogt, Thea |
title |
The glaciogenic origin of the Pleistocene calcareous dust in Argentina on the basis of field, mineralogical, textural, and geochemical analyses |
title_short |
The glaciogenic origin of the Pleistocene calcareous dust in Argentina on the basis of field, mineralogical, textural, and geochemical analyses |
title_full |
The glaciogenic origin of the Pleistocene calcareous dust in Argentina on the basis of field, mineralogical, textural, and geochemical analyses |
title_fullStr |
The glaciogenic origin of the Pleistocene calcareous dust in Argentina on the basis of field, mineralogical, textural, and geochemical analyses |
title_full_unstemmed |
The glaciogenic origin of the Pleistocene calcareous dust in Argentina on the basis of field, mineralogical, textural, and geochemical analyses |
title_sort |
glaciogenic origin of the pleistocene calcareous dust in argentina on the basis of field, mineralogical, textural, and geochemical analyses |
publisher |
HAL CCSD |
publishDate |
2019 |
url |
https://hal.archives-ouvertes.fr/hal-02047310 https://hal.archives-ouvertes.fr/hal-02047310/document https://hal.archives-ouvertes.fr/hal-02047310/file/Quat.%20Res.%202018%20Vogt.pdf https://doi.org/10.1017/qua.2018.74 |
geographic |
Antarctic Argentina Patagonia |
geographic_facet |
Antarctic Argentina Patagonia |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
ISSN: 0033-5894 EISSN: 1096-0287 Quaternary Research https://hal.archives-ouvertes.fr/hal-02047310 Quaternary Research, Elsevier, 2019, 91 (1), pp.218-233. ⟨10.1017/qua.2018.74⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1017/qua.2018.74 hal-02047310 https://hal.archives-ouvertes.fr/hal-02047310 https://hal.archives-ouvertes.fr/hal-02047310/document https://hal.archives-ouvertes.fr/hal-02047310/file/Quat.%20Res.%202018%20Vogt.pdf doi:10.1017/qua.2018.74 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1017/qua.2018.74 |
container_title |
Quaternary Research |
container_volume |
91 |
container_issue |
1 |
container_start_page |
218 |
op_container_end_page |
233 |
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1766273257776873472 |