Elemental Geochemistry of Sedimentary Rocks at Yellowknife Bay, Gale Crater, Mars
Sedimentary rocks examined by the Curiosity rover at Yellowknife Bay, Mars, were derived from sources that evolved from an approximately average martian crustal composition to one influenced by alkaline basalts. No evidence of chemical weathering is preserved, indicating arid, possibly cold, paleocl...
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American Association for the Advancement of Science (AAAS)
2014
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Online Access: | http://dx.doi.org/10.1126/science.1244734 https://www.science.org/doi/pdf/10.1126/science.1244734 |
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craaas:10.1126/science.1244734 2024-10-13T14:11:20+00:00 Elemental Geochemistry of Sedimentary Rocks at Yellowknife Bay, Gale Crater, Mars McLennan, S. M. Anderson, R. B. Bell, J. F. Bridges, J. C. Calef, F. Campbell, J. L. Clark, B. C. Clegg, S. Conrad, P. Cousin, A. Des Marais, D. J. Dromart, G. Dyar, M. D. Edgar, L. A. Ehlmann, B. L. Fabre, C. Forni, O. Gasnault, O. Gellert, R. Gordon, S. Grant, J. A. Grotzinger, J. P. Gupta, S. Herkenhoff, K. E. Hurowitz, J. A. King, P. L. Le Mouélic, S. Leshin, L. A. Léveillé, R. Lewis, K. W. Mangold, N. Maurice, S. Ming, D. W. Morris, R. V. Nachon, M. Newsom, H. E. Ollila, A. M. Perrett, G. M. Rice, M. S. Schmidt, M. E. Schwenzer, S. P. Stack, K. Stolper, E. M. Sumner, D. Y. Treiman, A. H. VanBommel, S. Vaniman, D. T. Vasavada, A. Wiens, R. C. Yingst, R. A. 2014 http://dx.doi.org/10.1126/science.1244734 https://www.science.org/doi/pdf/10.1126/science.1244734 en eng American Association for the Advancement of Science (AAAS) Science volume 343, issue 6169 ISSN 0036-8075 1095-9203 journal-article 2014 craaas https://doi.org/10.1126/science.1244734 2024-09-27T04:00:42Z Sedimentary rocks examined by the Curiosity rover at Yellowknife Bay, Mars, were derived from sources that evolved from an approximately average martian crustal composition to one influenced by alkaline basalts. No evidence of chemical weathering is preserved, indicating arid, possibly cold, paleoclimates and rapid erosion and deposition. The absence of predicted geochemical variations indicates that magnetite and phyllosilicates formed by diagenesis under low-temperature, circumneutral pH, rock-dominated aqueous conditions. Analyses of diagenetic features (including concretions, raised ridges, and fractures) at high spatial resolution indicate that they are composed of iron- and halogen-rich components, magnesium-iron-chlorine–rich components, and hydrated calcium sulfates, respectively. Composition of a cross-cutting dike-like feature is consistent with sedimentary intrusion. The geochemistry of these sedimentary rocks provides further evidence for diverse depositional and diagenetic sedimentary environments during the early history of Mars. Article in Journal/Newspaper Yellowknife AAAS Resource Center (American Association for the Advancement of Science) Yellowknife Yellowknife Bay ENVELOPE(-114.336,-114.336,62.367,62.367) Science 343 6169 1244734 1244734 |
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Open Polar |
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AAAS Resource Center (American Association for the Advancement of Science) |
op_collection_id |
craaas |
language |
English |
description |
Sedimentary rocks examined by the Curiosity rover at Yellowknife Bay, Mars, were derived from sources that evolved from an approximately average martian crustal composition to one influenced by alkaline basalts. No evidence of chemical weathering is preserved, indicating arid, possibly cold, paleoclimates and rapid erosion and deposition. The absence of predicted geochemical variations indicates that magnetite and phyllosilicates formed by diagenesis under low-temperature, circumneutral pH, rock-dominated aqueous conditions. Analyses of diagenetic features (including concretions, raised ridges, and fractures) at high spatial resolution indicate that they are composed of iron- and halogen-rich components, magnesium-iron-chlorine–rich components, and hydrated calcium sulfates, respectively. Composition of a cross-cutting dike-like feature is consistent with sedimentary intrusion. The geochemistry of these sedimentary rocks provides further evidence for diverse depositional and diagenetic sedimentary environments during the early history of Mars. |
format |
Article in Journal/Newspaper |
author |
McLennan, S. M. Anderson, R. B. Bell, J. F. Bridges, J. C. Calef, F. Campbell, J. L. Clark, B. C. Clegg, S. Conrad, P. Cousin, A. Des Marais, D. J. Dromart, G. Dyar, M. D. Edgar, L. A. Ehlmann, B. L. Fabre, C. Forni, O. Gasnault, O. Gellert, R. Gordon, S. Grant, J. A. Grotzinger, J. P. Gupta, S. Herkenhoff, K. E. Hurowitz, J. A. King, P. L. Le Mouélic, S. Leshin, L. A. Léveillé, R. Lewis, K. W. Mangold, N. Maurice, S. Ming, D. W. Morris, R. V. Nachon, M. Newsom, H. E. Ollila, A. M. Perrett, G. M. Rice, M. S. Schmidt, M. E. Schwenzer, S. P. Stack, K. Stolper, E. M. Sumner, D. Y. Treiman, A. H. VanBommel, S. Vaniman, D. T. Vasavada, A. Wiens, R. C. Yingst, R. A. |
spellingShingle |
McLennan, S. M. Anderson, R. B. Bell, J. F. Bridges, J. C. Calef, F. Campbell, J. L. Clark, B. C. Clegg, S. Conrad, P. Cousin, A. Des Marais, D. J. Dromart, G. Dyar, M. D. Edgar, L. A. Ehlmann, B. L. Fabre, C. Forni, O. Gasnault, O. Gellert, R. Gordon, S. Grant, J. A. Grotzinger, J. P. Gupta, S. Herkenhoff, K. E. Hurowitz, J. A. King, P. L. Le Mouélic, S. Leshin, L. A. Léveillé, R. Lewis, K. W. Mangold, N. Maurice, S. Ming, D. W. Morris, R. V. Nachon, M. Newsom, H. E. Ollila, A. M. Perrett, G. M. Rice, M. S. Schmidt, M. E. Schwenzer, S. P. Stack, K. Stolper, E. M. Sumner, D. Y. Treiman, A. H. VanBommel, S. Vaniman, D. T. Vasavada, A. Wiens, R. C. Yingst, R. A. Elemental Geochemistry of Sedimentary Rocks at Yellowknife Bay, Gale Crater, Mars |
author_facet |
McLennan, S. M. Anderson, R. B. Bell, J. F. Bridges, J. C. Calef, F. Campbell, J. L. Clark, B. C. Clegg, S. Conrad, P. Cousin, A. Des Marais, D. J. Dromart, G. Dyar, M. D. Edgar, L. A. Ehlmann, B. L. Fabre, C. Forni, O. Gasnault, O. Gellert, R. Gordon, S. Grant, J. A. Grotzinger, J. P. Gupta, S. Herkenhoff, K. E. Hurowitz, J. A. King, P. L. Le Mouélic, S. Leshin, L. A. Léveillé, R. Lewis, K. W. Mangold, N. Maurice, S. Ming, D. W. Morris, R. V. Nachon, M. Newsom, H. E. Ollila, A. M. Perrett, G. M. Rice, M. S. Schmidt, M. E. Schwenzer, S. P. Stack, K. Stolper, E. M. Sumner, D. Y. Treiman, A. H. VanBommel, S. Vaniman, D. T. Vasavada, A. Wiens, R. C. Yingst, R. A. |
author_sort |
McLennan, S. M. |
title |
Elemental Geochemistry of Sedimentary Rocks at Yellowknife Bay, Gale Crater, Mars |
title_short |
Elemental Geochemistry of Sedimentary Rocks at Yellowknife Bay, Gale Crater, Mars |
title_full |
Elemental Geochemistry of Sedimentary Rocks at Yellowknife Bay, Gale Crater, Mars |
title_fullStr |
Elemental Geochemistry of Sedimentary Rocks at Yellowknife Bay, Gale Crater, Mars |
title_full_unstemmed |
Elemental Geochemistry of Sedimentary Rocks at Yellowknife Bay, Gale Crater, Mars |
title_sort |
elemental geochemistry of sedimentary rocks at yellowknife bay, gale crater, mars |
publisher |
American Association for the Advancement of Science (AAAS) |
publishDate |
2014 |
url |
http://dx.doi.org/10.1126/science.1244734 https://www.science.org/doi/pdf/10.1126/science.1244734 |
long_lat |
ENVELOPE(-114.336,-114.336,62.367,62.367) |
geographic |
Yellowknife Yellowknife Bay |
geographic_facet |
Yellowknife Yellowknife Bay |
genre |
Yellowknife |
genre_facet |
Yellowknife |
op_source |
Science volume 343, issue 6169 ISSN 0036-8075 1095-9203 |
op_doi |
https://doi.org/10.1126/science.1244734 |
container_title |
Science |
container_volume |
343 |
container_issue |
6169 |
container_start_page |
1244734 |
op_container_end_page |
1244734 |
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1812819019715051520 |