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Clay mineral diversity and abundance in sedimentary rocks of Gale crater, Mars
Clay minerals provide indicators of the evolution of aqueous conditions and possible habitats for life on ancient Mars. Analyses by the Mars Science Laboratory rover Curiosity show that ~3.5–billion year (Ga) fluvio-lacustrine mudstones in Gale crater contain up to ~28 weight % (wt %) clay minerals....
Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Association for the Advancement of Science
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5990309/ https://www.ncbi.nlm.nih.gov/pubmed/29881776 http://dx.doi.org/10.1126/sciadv.aar3330 |
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author | Bristow, Thomas F. Rampe, Elizabeth B. Achilles, Cherie N. Blake, David F. Chipera, Steve J. Craig, Patricia Crisp, Joy A. Des Marais, David J. Downs, Robert T. Gellert, Ralf Grotzinger, John P. Gupta, Sanjeev Hazen, Robert M. Horgan, Briony Hogancamp, Joanna V. Mangold, Nicolas Mahaffy, Paul R. McAdam, Amy C. Ming, Doug W. Morookian, John Michael Morris, Richard V. Morrison, Shaunna M. Treiman, Allan H. Vaniman, David T. Vasavada, Ashwin R. Yen, Albert S. |
author_facet | Bristow, Thomas F. Rampe, Elizabeth B. Achilles, Cherie N. Blake, David F. Chipera, Steve J. Craig, Patricia Crisp, Joy A. Des Marais, David J. Downs, Robert T. Gellert, Ralf Grotzinger, John P. Gupta, Sanjeev Hazen, Robert M. Horgan, Briony Hogancamp, Joanna V. Mangold, Nicolas Mahaffy, Paul R. McAdam, Amy C. Ming, Doug W. Morookian, John Michael Morris, Richard V. Morrison, Shaunna M. Treiman, Allan H. Vaniman, David T. Vasavada, Ashwin R. Yen, Albert S. |
author_sort | Bristow, Thomas F. |
collection | PubMed |
description | Clay minerals provide indicators of the evolution of aqueous conditions and possible habitats for life on ancient Mars. Analyses by the Mars Science Laboratory rover Curiosity show that ~3.5–billion year (Ga) fluvio-lacustrine mudstones in Gale crater contain up to ~28 weight % (wt %) clay minerals. We demonstrate that the species of clay minerals deduced from x-ray diffraction and evolved gas analysis show a strong paleoenvironmental dependency. While perennial lake mudstones are characterized by Fe-saponite, we find that stratigraphic intervals associated with episodic lake drying contain Al-rich, Fe(3+)-bearing dioctahedral smectite, with minor (3 wt %) quantities of ferripyrophyllite, interpreted as wind-blown detritus, found in candidate aeolian deposits. Our results suggest that dioctahedral smectite formed via near-surface chemical weathering driven by fluctuations in lake level and atmospheric infiltration, a process leading to the redistribution of nutrients and potentially influencing the cycling of gases that help regulate climate. |
format | Online Article Text |
id | pubmed-5990309 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | American Association for the Advancement of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-59903092018-06-07 Clay mineral diversity and abundance in sedimentary rocks of Gale crater, Mars Bristow, Thomas F. Rampe, Elizabeth B. Achilles, Cherie N. Blake, David F. Chipera, Steve J. Craig, Patricia Crisp, Joy A. Des Marais, David J. Downs, Robert T. Gellert, Ralf Grotzinger, John P. Gupta, Sanjeev Hazen, Robert M. Horgan, Briony Hogancamp, Joanna V. Mangold, Nicolas Mahaffy, Paul R. McAdam, Amy C. Ming, Doug W. Morookian, John Michael Morris, Richard V. Morrison, Shaunna M. Treiman, Allan H. Vaniman, David T. Vasavada, Ashwin R. Yen, Albert S. Sci Adv Research Articles Clay minerals provide indicators of the evolution of aqueous conditions and possible habitats for life on ancient Mars. Analyses by the Mars Science Laboratory rover Curiosity show that ~3.5–billion year (Ga) fluvio-lacustrine mudstones in Gale crater contain up to ~28 weight % (wt %) clay minerals. We demonstrate that the species of clay minerals deduced from x-ray diffraction and evolved gas analysis show a strong paleoenvironmental dependency. While perennial lake mudstones are characterized by Fe-saponite, we find that stratigraphic intervals associated with episodic lake drying contain Al-rich, Fe(3+)-bearing dioctahedral smectite, with minor (3 wt %) quantities of ferripyrophyllite, interpreted as wind-blown detritus, found in candidate aeolian deposits. Our results suggest that dioctahedral smectite formed via near-surface chemical weathering driven by fluctuations in lake level and atmospheric infiltration, a process leading to the redistribution of nutrients and potentially influencing the cycling of gases that help regulate climate. American Association for the Advancement of Science 2018-06-06 /pmc/articles/PMC5990309/ /pubmed/29881776 http://dx.doi.org/10.1126/sciadv.aar3330 Text en Copyright © 2018 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). http://creativecommons.org/licenses/by-nc/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (http://creativecommons.org/licenses/by-nc/4.0/) , which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited. |
spellingShingle | Research Articles Bristow, Thomas F. Rampe, Elizabeth B. Achilles, Cherie N. Blake, David F. Chipera, Steve J. Craig, Patricia Crisp, Joy A. Des Marais, David J. Downs, Robert T. Gellert, Ralf Grotzinger, John P. Gupta, Sanjeev Hazen, Robert M. Horgan, Briony Hogancamp, Joanna V. Mangold, Nicolas Mahaffy, Paul R. McAdam, Amy C. Ming, Doug W. Morookian, John Michael Morris, Richard V. Morrison, Shaunna M. Treiman, Allan H. Vaniman, David T. Vasavada, Ashwin R. Yen, Albert S. Clay mineral diversity and abundance in sedimentary rocks of Gale crater, Mars |
title | Clay mineral diversity and abundance in sedimentary rocks of Gale crater, Mars |
title_full | Clay mineral diversity and abundance in sedimentary rocks of Gale crater, Mars |
title_fullStr | Clay mineral diversity and abundance in sedimentary rocks of Gale crater, Mars |
title_full_unstemmed | Clay mineral diversity and abundance in sedimentary rocks of Gale crater, Mars |
title_short | Clay mineral diversity and abundance in sedimentary rocks of Gale crater, Mars |
title_sort | clay mineral diversity and abundance in sedimentary rocks of gale crater, mars |
topic | Research Articles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5990309/ https://www.ncbi.nlm.nih.gov/pubmed/29881776 http://dx.doi.org/10.1126/sciadv.aar3330 |
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