Squyres, S. W. and Grotzinger, J. P. and Arvidson, R. E. and Bell, J. F., III and Calvin, W. and Christensen, P. R. and Clark, B. C. and Crisp, J. A. and Farrand, W. H. and Herkenhoff, K. E. and Johnson, J. R. and Klingelhöfer, G. and Knoll, A. H. and McLennan, S. M. and McSween, Harry Y., Jr. and Morris, R. V. and Rice, J. W., Jr. and Rieder, R. and Soderblom, L. A. (2004) In Situ Evidence for an Ancient Aqueous Environment at Meridiani Planum, Mars. Science, 306 (5702). pp. 1709-1714. ISSN 0036-8075. doi:10.1126/science.1104559. https://resolver.caltech.edu/CaltechAUTHORS:20130306-105158576
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Abstract
Sedimentary rocks at Eagle crater in Meridiani Planum are composed of fine-grained siliciclastic materials derived from weathering of basaltic rocks, sulfate minerals (including magnesium sulfate and jarosite) that constitute several tens of percent of the rock by weight, and hematite. Cross-stratification observed in rock outcrops indicates eolian and aqueous transport. Diagenetic features include hematite-rich concretions and crystal-mold vugs. We interpret the rocks to be a mixture of chemical and siliciclastic sediments with a complex diagenetic history. The environmental conditions that they record include episodic inundation by shallow surface water, evaporation, and desiccation. The geologic record at Meridiani Planum suggests that conditions were suitable for biological activity for a period of time in martian history.
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| Additional Information: | © 2004 American Association for the Advancement of Science. Received for publication 26 August 2004. Accepted for publication 19 October 2004. This research was carried out for the Jet Propulsion Laboratory, California Institute of Technology, under a contract with NASA. | ||||||||||||||||||||||
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| Issue or Number: | 5702 | ||||||||||||||||||||||
| DOI: | 10.1126/science.1104559 | ||||||||||||||||||||||
| Record Number: | CaltechAUTHORS:20130306-105158576 | ||||||||||||||||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20130306-105158576 | ||||||||||||||||||||||
| Official Citation: | In situ evidence for an ancient aqueous environment at Meridiani Planum, Mars. Squyres SW, Grotzinger JP, Arvidson RE, Bell JF 3rd, Calvin W, Christensen PR, Clark BC, Crisp JA, Farrand WH, Herkenhoff KE, Johnson JR, Klingelhöfer G, Knoll AH, McLennan SM, McSween HY Jr, Morris RV, Rice JW Jr, Rieder R, Soderblom LA. Science. 2004 Dec 3;306(5702):1709-14. | ||||||||||||||||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||||||||||||
| ID Code: | 37340 | ||||||||||||||||||||||
| Collection: | CaltechAUTHORS | ||||||||||||||||||||||
| Deposited By: | Ruth Sustaita | ||||||||||||||||||||||
| Deposited On: | 06 Mar 2013 19:10 | ||||||||||||||||||||||
| Last Modified: | 09 Nov 2021 23:28 |
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