Diagenetic origin of nodules in the Sheepbed member, Yellowknife Bay formation, Gale crater, Mars
The Sheepbed member of the Yellowknife Bay formation in Gale crater contains millimeter‐scale nodules that represent an array of morphologies unlike those previously observed in sedimentary deposits on Mars. Three types of nodules have been identified in the Sheepbed member in order of decreasing ab...
Published in: | Journal of Geophysical Research: Planets |
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Format: | Article in Journal/Newspaper |
Language: | English |
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American Geophysical Union
2014
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ftcaltechauth:oai:authors.library.caltech.edu:105152 2023-05-15T18:45:41+02:00 Diagenetic origin of nodules in the Sheepbed member, Yellowknife Bay formation, Gale crater, Mars Stack, K. M. Grotzinger, J. P. Kah, L. C. Schmidt, M. E. Mangold, N. Edgett, K. S. Sumner, D. Y. Siebach, K. L. Nachon, M. Lee, R. Blaney, D. L. Deflores, L. P. Edgar, L. A. Fairén, A. G. Leshin, L. A. Maurice, S. Oehler, D. Z. Rice, M. S. Wiens, R. C. 2014-07 application/pdf application/msword image/jpeg https://authors.library.caltech.edu/105152/ https://authors.library.caltech.edu/105152/1/2014JE004617.pdf https://authors.library.caltech.edu/105152/3/2014je004617readme.docx https://authors.library.caltech.edu/105152/5/2014je004617ps01.jpg https://authors.library.caltech.edu/105152/6/2014je004617text01.docx https://resolver.caltech.edu/CaltechAUTHORS:20200828-150727637 en eng American Geophysical Union https://authors.library.caltech.edu/105152/1/2014JE004617.pdf https://authors.library.caltech.edu/105152/3/2014je004617readme.docx https://authors.library.caltech.edu/105152/5/2014je004617ps01.jpg https://authors.library.caltech.edu/105152/6/2014je004617text01.docx Stack, K. M. and Grotzinger, J. P. and Kah, L. C. and Schmidt, M. E. and Mangold, N. and Edgett, K. S. and Sumner, D. Y. and Siebach, K. L. and Nachon, M. and Lee, R. and Blaney, D. L. and Deflores, L. P. and Edgar, L. A. and Fairén, A. G. and Leshin, L. A. and Maurice, S. and Oehler, D. Z. and Rice, M. S. and Wiens, R. C. (2014) Diagenetic origin of nodules in the Sheepbed member, Yellowknife Bay formation, Gale crater, Mars. Journal of Geophysical Research. Planets, 119 (7). pp. 1637-1664. ISSN 2169-9097. doi:10.1002/2014je004617. https://resolver.caltech.edu/CaltechAUTHORS:20200828-150727637 <https://resolver.caltech.edu/CaltechAUTHORS:20200828-150727637> other Article PeerReviewed 2014 ftcaltechauth https://doi.org/10.1002/2014je004617 2021-11-18T18:59:21Z The Sheepbed member of the Yellowknife Bay formation in Gale crater contains millimeter‐scale nodules that represent an array of morphologies unlike those previously observed in sedimentary deposits on Mars. Three types of nodules have been identified in the Sheepbed member in order of decreasing abundance: solid nodules, hollow nodules, and filled nodules, a variant of hollow nodules whose voids have been filled with sulfate minerals. This study uses Mast Camera (Mastcam) and Mars Hand Lens Imager (MAHLI) images from the Mars Science Laboratory Curiosity rover to determine the size, shape, and spatial distribution of the Sheepbed nodules. The Alpha Particle X‐Ray Spectrometer (APXS) and ChemCam instruments provide geochemical data to help interpret nodule origins. Based on their physical characteristics, spatial distribution, and composition, the nodules are interpreted as concretions formed during early diagenesis. Several hypotheses are considered for hollow nodule formation including origins as primary or secondary voids. The occurrence of concretions interpreted in the Sheepbed mudstone and in several other sedimentary sequences on Mars suggests that active groundwater systems play an important role in the diagenesis of Martian sedimentary rocks. When concretions are formed during early diagenetic cementation, as interpreted for the Sheepbed nodules, they have the potential to create a taphonomic window favorable for the preservation of Martian organics. Article in Journal/Newspaper Yellowknife Caltech Authors (California Institute of Technology) Yellowknife Yellowknife Bay ENVELOPE(-114.336,-114.336,62.367,62.367) Journal of Geophysical Research: Planets 119 7 1637 1664 |
institution |
Open Polar |
collection |
Caltech Authors (California Institute of Technology) |
op_collection_id |
ftcaltechauth |
language |
English |
description |
The Sheepbed member of the Yellowknife Bay formation in Gale crater contains millimeter‐scale nodules that represent an array of morphologies unlike those previously observed in sedimentary deposits on Mars. Three types of nodules have been identified in the Sheepbed member in order of decreasing abundance: solid nodules, hollow nodules, and filled nodules, a variant of hollow nodules whose voids have been filled with sulfate minerals. This study uses Mast Camera (Mastcam) and Mars Hand Lens Imager (MAHLI) images from the Mars Science Laboratory Curiosity rover to determine the size, shape, and spatial distribution of the Sheepbed nodules. The Alpha Particle X‐Ray Spectrometer (APXS) and ChemCam instruments provide geochemical data to help interpret nodule origins. Based on their physical characteristics, spatial distribution, and composition, the nodules are interpreted as concretions formed during early diagenesis. Several hypotheses are considered for hollow nodule formation including origins as primary or secondary voids. The occurrence of concretions interpreted in the Sheepbed mudstone and in several other sedimentary sequences on Mars suggests that active groundwater systems play an important role in the diagenesis of Martian sedimentary rocks. When concretions are formed during early diagenetic cementation, as interpreted for the Sheepbed nodules, they have the potential to create a taphonomic window favorable for the preservation of Martian organics. |
format |
Article in Journal/Newspaper |
author |
Stack, K. M. Grotzinger, J. P. Kah, L. C. Schmidt, M. E. Mangold, N. Edgett, K. S. Sumner, D. Y. Siebach, K. L. Nachon, M. Lee, R. Blaney, D. L. Deflores, L. P. Edgar, L. A. Fairén, A. G. Leshin, L. A. Maurice, S. Oehler, D. Z. Rice, M. S. Wiens, R. C. |
spellingShingle |
Stack, K. M. Grotzinger, J. P. Kah, L. C. Schmidt, M. E. Mangold, N. Edgett, K. S. Sumner, D. Y. Siebach, K. L. Nachon, M. Lee, R. Blaney, D. L. Deflores, L. P. Edgar, L. A. Fairén, A. G. Leshin, L. A. Maurice, S. Oehler, D. Z. Rice, M. S. Wiens, R. C. Diagenetic origin of nodules in the Sheepbed member, Yellowknife Bay formation, Gale crater, Mars |
author_facet |
Stack, K. M. Grotzinger, J. P. Kah, L. C. Schmidt, M. E. Mangold, N. Edgett, K. S. Sumner, D. Y. Siebach, K. L. Nachon, M. Lee, R. Blaney, D. L. Deflores, L. P. Edgar, L. A. Fairén, A. G. Leshin, L. A. Maurice, S. Oehler, D. Z. Rice, M. S. Wiens, R. C. |
author_sort |
Stack, K. M. |
title |
Diagenetic origin of nodules in the Sheepbed member, Yellowknife Bay formation, Gale crater, Mars |
title_short |
Diagenetic origin of nodules in the Sheepbed member, Yellowknife Bay formation, Gale crater, Mars |
title_full |
Diagenetic origin of nodules in the Sheepbed member, Yellowknife Bay formation, Gale crater, Mars |
title_fullStr |
Diagenetic origin of nodules in the Sheepbed member, Yellowknife Bay formation, Gale crater, Mars |
title_full_unstemmed |
Diagenetic origin of nodules in the Sheepbed member, Yellowknife Bay formation, Gale crater, Mars |
title_sort |
diagenetic origin of nodules in the sheepbed member, yellowknife bay formation, gale crater, mars |
publisher |
American Geophysical Union |
publishDate |
2014 |
url |
https://authors.library.caltech.edu/105152/ https://authors.library.caltech.edu/105152/1/2014JE004617.pdf https://authors.library.caltech.edu/105152/3/2014je004617readme.docx https://authors.library.caltech.edu/105152/5/2014je004617ps01.jpg https://authors.library.caltech.edu/105152/6/2014je004617text01.docx https://resolver.caltech.edu/CaltechAUTHORS:20200828-150727637 |
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_relation |
https://authors.library.caltech.edu/105152/1/2014JE004617.pdf https://authors.library.caltech.edu/105152/3/2014je004617readme.docx https://authors.library.caltech.edu/105152/5/2014je004617ps01.jpg https://authors.library.caltech.edu/105152/6/2014je004617text01.docx Stack, K. M. and Grotzinger, J. P. and Kah, L. C. and Schmidt, M. E. and Mangold, N. and Edgett, K. S. and Sumner, D. Y. and Siebach, K. L. and Nachon, M. and Lee, R. and Blaney, D. L. and Deflores, L. P. and Edgar, L. A. and Fairén, A. G. and Leshin, L. A. and Maurice, S. and Oehler, D. Z. and Rice, M. S. and Wiens, R. C. (2014) Diagenetic origin of nodules in the Sheepbed member, Yellowknife Bay formation, Gale crater, Mars. Journal of Geophysical Research. Planets, 119 (7). pp. 1637-1664. ISSN 2169-9097. doi:10.1002/2014je004617. https://resolver.caltech.edu/CaltechAUTHORS:20200828-150727637 <https://resolver.caltech.edu/CaltechAUTHORS:20200828-150727637> |
op_rights |
other |
op_doi |
https://doi.org/10.1002/2014je004617 |
container_title |
Journal of Geophysical Research: Planets |
container_volume |
119 |
container_issue |
7 |
container_start_page |
1637 |
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1664 |
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1766236797688348672 |