Dense collection areas and terrestrial alteration of meteorites in the Atacama Desert
International audience Abstract In the last 15 years, more than 2700 meteorites have been recovered and officially classified from the Atacama Desert. Although the number of meteorites collected in the Atacama has risen, the physical and climatic properties of the dense collection areas (DCAs) have...
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ftinraparis:oai:HAL:hal-04372993v1 2024-06-23T07:47:08+00:00 Dense collection areas and terrestrial alteration of meteorites in the Atacama Desert Pinto, Gabriel Tavernier, Adrien Gattacceca, Jérôme Corgne, Alexandre Valenzuela, Millarca Luais, Béatrice Flores, Laura Olivares, Felipe Marrocchi, Yves Centre de Recherches Pétrographiques et Géochimiques (CRPG) Institut national des sciences de l'Univers (INSU - CNRS)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS) Universidad de Atacama Centre Européen de Recherche et d'Enseignement des Géosciences de l'Environnement (CEREGE) Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Universidad Austral de Chile Universidad Católica del Norte Antofagasta Leibniz-Zentrum für Agrarlandschaftsforschung = Leibniz Centre for Agricultural Landscape Research (ZALF) Instituto de Astronomia y ciencias Planetarias de Atacama (INCT) 2024-01-04 https://hal.science/hal-04372993 https://doi.org/10.1111/maps.14125 en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/doi/10.1111/maps.14125 hal-04372993 https://hal.science/hal-04372993 doi:10.1111/maps.14125 WOS: 001136383800001 ISSN: 1086-9379 EISSN: 1945-5100 Meteoritics and Planetary Science https://hal.science/hal-04372993 Meteoritics and Planetary Science, 2024, 59 (2), pp.351-367. ⟨10.1111/maps.14125⟩ [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2024 ftinraparis https://doi.org/10.1111/maps.14125 2024-06-11T14:46:24Z International audience Abstract In the last 15 years, more than 2700 meteorites have been recovered and officially classified from the Atacama Desert. Although the number of meteorites collected in the Atacama has risen, the physical and climatic properties of the dense collection areas (DCAs) have not been fully characterized. In this article, we compiled the published data of all classified meteorites found in the Atacama Desert to (i) describe the distribution by meteorite groups, (ii) compare the weathering degree of chondrites among different Atacama DCAs and other hot and cold deserts, and (iii) determine the preservation conditions of chondrites in the main Atacama DCAs in relation with the local climatic conditions. The 35 DCAs so far identified in the Atacama Desert are located in three main morphotectonic units: The Coastal Range (CR), Central Depression (CD), and Pre‐Andean Range/Basement. A comparison with reported weathering data from other cold and hot deserts indicates that the mean terrestrial weathering of Atacama chondrites (W1–2), displays less alteration than other hot deserts (W2–3) and resembles the weathering distribution of the Antarctic meteorites (W1–2). The highest abundance of Atacama chondrites with low weathering (≤W2) is localized in the CD (78.8%, N = 1435), which is protected from the coastal fog influence and seasonal rainfalls and displays the oldest surfaces in the Atacama Desert. The morphogenetic classification based on present‐day temperatures and precipitations of the main Atacama DCAs reveals similar regional/subregional climatic conditions in the most productive areas and a truly productive surface for meteorite recovery between 5% and 58% of the quadrangles formally defined for each Atacama DCA. Our morphogenetic classification lacks consideration of some meteorological parameters such as the coastal fog, so it cannot fully explain the differences in weathering patterns among CR chondrites. Future studies of chondrite preservation in the Atacama DCAs should consider ... Article in Journal/Newspaper Antarc* Antarctic Institut National de la Recherche Agronomique: ProdINRA Antarctic The Antarctic Meteoritics & Planetary Science 59 2 351 367 |
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Open Polar |
collection |
Institut National de la Recherche Agronomique: ProdINRA |
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ftinraparis |
language |
English |
topic |
[SDU]Sciences of the Universe [physics] |
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[SDU]Sciences of the Universe [physics] Pinto, Gabriel Tavernier, Adrien Gattacceca, Jérôme Corgne, Alexandre Valenzuela, Millarca Luais, Béatrice Flores, Laura Olivares, Felipe Marrocchi, Yves Dense collection areas and terrestrial alteration of meteorites in the Atacama Desert |
topic_facet |
[SDU]Sciences of the Universe [physics] |
description |
International audience Abstract In the last 15 years, more than 2700 meteorites have been recovered and officially classified from the Atacama Desert. Although the number of meteorites collected in the Atacama has risen, the physical and climatic properties of the dense collection areas (DCAs) have not been fully characterized. In this article, we compiled the published data of all classified meteorites found in the Atacama Desert to (i) describe the distribution by meteorite groups, (ii) compare the weathering degree of chondrites among different Atacama DCAs and other hot and cold deserts, and (iii) determine the preservation conditions of chondrites in the main Atacama DCAs in relation with the local climatic conditions. The 35 DCAs so far identified in the Atacama Desert are located in three main morphotectonic units: The Coastal Range (CR), Central Depression (CD), and Pre‐Andean Range/Basement. A comparison with reported weathering data from other cold and hot deserts indicates that the mean terrestrial weathering of Atacama chondrites (W1–2), displays less alteration than other hot deserts (W2–3) and resembles the weathering distribution of the Antarctic meteorites (W1–2). The highest abundance of Atacama chondrites with low weathering (≤W2) is localized in the CD (78.8%, N = 1435), which is protected from the coastal fog influence and seasonal rainfalls and displays the oldest surfaces in the Atacama Desert. The morphogenetic classification based on present‐day temperatures and precipitations of the main Atacama DCAs reveals similar regional/subregional climatic conditions in the most productive areas and a truly productive surface for meteorite recovery between 5% and 58% of the quadrangles formally defined for each Atacama DCA. Our morphogenetic classification lacks consideration of some meteorological parameters such as the coastal fog, so it cannot fully explain the differences in weathering patterns among CR chondrites. Future studies of chondrite preservation in the Atacama DCAs should consider ... |
author2 |
Centre de Recherches Pétrographiques et Géochimiques (CRPG) Institut national des sciences de l'Univers (INSU - CNRS)-Université de Lorraine (UL)-Centre National de la Recherche Scientifique (CNRS) Universidad de Atacama Centre Européen de Recherche et d'Enseignement des Géosciences de l'Environnement (CEREGE) Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) Universidad Austral de Chile Universidad Católica del Norte Antofagasta Leibniz-Zentrum für Agrarlandschaftsforschung = Leibniz Centre for Agricultural Landscape Research (ZALF) Instituto de Astronomia y ciencias Planetarias de Atacama (INCT) |
format |
Article in Journal/Newspaper |
author |
Pinto, Gabriel Tavernier, Adrien Gattacceca, Jérôme Corgne, Alexandre Valenzuela, Millarca Luais, Béatrice Flores, Laura Olivares, Felipe Marrocchi, Yves |
author_facet |
Pinto, Gabriel Tavernier, Adrien Gattacceca, Jérôme Corgne, Alexandre Valenzuela, Millarca Luais, Béatrice Flores, Laura Olivares, Felipe Marrocchi, Yves |
author_sort |
Pinto, Gabriel |
title |
Dense collection areas and terrestrial alteration of meteorites in the Atacama Desert |
title_short |
Dense collection areas and terrestrial alteration of meteorites in the Atacama Desert |
title_full |
Dense collection areas and terrestrial alteration of meteorites in the Atacama Desert |
title_fullStr |
Dense collection areas and terrestrial alteration of meteorites in the Atacama Desert |
title_full_unstemmed |
Dense collection areas and terrestrial alteration of meteorites in the Atacama Desert |
title_sort |
dense collection areas and terrestrial alteration of meteorites in the atacama desert |
publisher |
HAL CCSD |
publishDate |
2024 |
url |
https://hal.science/hal-04372993 https://doi.org/10.1111/maps.14125 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
ISSN: 1086-9379 EISSN: 1945-5100 Meteoritics and Planetary Science https://hal.science/hal-04372993 Meteoritics and Planetary Science, 2024, 59 (2), pp.351-367. ⟨10.1111/maps.14125⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1111/maps.14125 hal-04372993 https://hal.science/hal-04372993 doi:10.1111/maps.14125 WOS: 001136383800001 |
op_doi |
https://doi.org/10.1111/maps.14125 |
container_title |
Meteoritics & Planetary Science |
container_volume |
59 |
container_issue |
2 |
container_start_page |
351 |
op_container_end_page |
367 |
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1802651227406729216 |