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The timing of alluvial activity in Gale crater, Mars

Grant, John A. and Wilson, Sharon A. and Mangold, Nicolas and Calef, Fred, III and Grotzinger, John P. (2014) The timing of alluvial activity in Gale crater, Mars. Geophysical Research Letters, 41 (4). pp. 1142-1149. ISSN 0094-8276. https://resolver.caltech.edu/CaltechAUTHORS:20181127-104455717

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Abstract

The Curiosity rover's discovery of rocks preserving evidence of past habitable conditions in Gale crater highlights the importance of constraining the timing of responsible depositional settings to understand the astrobiological implications for Mars. Crater statistics and mapping reveal the bulk of the alluvial deposits in Gale, including those interrogated by Curiosity, were likely emplaced during the Hesperian, thereby implying that habitable conditions persisted after the Noachian. Crater counting data sets and upper Peace Vallis fan morphology also suggest a possible younger period of fluvial activation that deposited ~10–20 m of sediments on the upper fan after emplacement of the main body of the fan. If validated, water associated with later alluvial activity may have contributed to secondary diagenetic features in Yellowknife Bay.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1002/2013gl058909DOIArticle
ORCID:
AuthorORCID
Grant, John A.0000-0001-8276-1281
Mangold, Nicolas0000-0002-0022-0631
Grotzinger, John P.0000-0001-9324-1257
Additional Information:© 2014 American Geophysical Union. Received 4 DEC 2013; Accepted 22 JAN 2014; Accepted article online 28 JAN 2014; Published online 18 FEB 2014. We thank the Jet Propulsion Laboratory, University of Arizona, Ball Aerospace, Malin Space Science Systems, and Lockheed Martin that built and operate the Curiosity rover, HiRISE and CTX cameras, and the Mars Reconnaissance Orbiter. Reviews by Devon Burr and David Crown improved this paper. This work was supported by NASA. The Editor thanks Devon Burr and David Crown for their assistance in evaluating this paper.
Funders:
Funding AgencyGrant Number
NASAUNSPECIFIED
Subject Keywords:Mars; Gale crater; alluvial fan; craters; Hesperian
Issue or Number:4
Record Number:CaltechAUTHORS:20181127-104455717
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20181127-104455717
Official Citation:Grant, J. A., S. A. Wilson, N. Mangold, F. Calef III, and J. P. Grotzinger (2014), The timing of alluvial activity in Gale crater, Mars, Geophys. Res. Lett., 41, 1142–1148, doi: 10.1002/2013GL058909
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:91220
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:27 Nov 2018 21:46
Last Modified:09 Mar 2020 13:19

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