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Sedimentary textures formed by aqueous processes, Erebus crater, Meridiani Planum, Mars

Grotzinger, J. and Bell, J., III and Herkenhoff, K. and Johnson, J. and Knoll, A. and McCartney, E. and McLennan, S. and Metz, J. and Moore, J. and Squyres, S. and Sullivan, R. and Ahronson, O. and Arvidson, R. and Joliff, B. and Golombek, M. and Lewis, K. and Parker, T. and Soderblom, J. (2006) Sedimentary textures formed by aqueous processes, Erebus crater, Meridiani Planum, Mars. Geology, 34 (12). pp. 1085-1088. ISSN 0091-7613.

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New observations at Erebus crater (Olympia outcrop) by the Mars Exploration Rover Opportunity between sols 671 and 735 (a sol is a martian day) indicate that a diverse suite of primary and penecontemporaneous sedimentary structures is preserved in sulfate-rich bedrock. Centimeter-scale trough (festoon) cross-lamination is abundant, and is better expressed and thicker than previously described examples. Postdepositional shrinkage cracks in the same outcrop are interpreted to have formed in response to desiccation. Considered collectively, this suite of sedimentary structures provides strong support for the involvement of liquid water during accumulation of sedimentary rocks at Meridiani Planum.

Item Type:Article
Related URLs:
URLURL TypeDescription
Grotzinger, J.0000-0001-9324-1257
Bell, J., III0000-0002-2006-4074
Herkenhoff, K.0000-0002-3153-6663
Ahronson, O.0000-0001-9930-2495
Arvidson, R.0000-0002-2854-0362
Lewis, K.0000-0003-3412-803X
Soderblom, J.0000-0003-3715-6407
Additional Information:© 2006 Geological Society of America, Inc. Accepted 3 August 2006. Received 18 May 2006. Revision received 1 August 2006. We gratefully acknowledge the entire Mars Exploration Rover (MER) science and engineering teams for making this investigation possible. We thank Mark Rosiek, Donna Galuszka, and Bonnie Redding for constructing the microscope imager digital elevation model of upper Overgaard. Dawn Sumner provided valuable discussion, and Jim Cowher helped with field work at terrestrial analog sites. We also thank Philip Allen, Mike Leeder, and an anonymous referee for helpful reviews. The National Aeronautics and Space Administration funded the overall MER project.
Funding AgencyGrant Number
Subject Keywords:Mars, water, cross-lamination, shrinkage cracks, sedimentary structures
Issue or Number:12
Record Number:CaltechAUTHORS:20141013-073829927
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Official Citation:J. Grotzinger, J. Bell III, K. Herkenhoff, J. Johnson, A. Knoll, E. McCartney, S. McLennan, J. Metz, J. Moore, S. Squyres, R. Sullivan, O. Ahronson, R. Arvidson, B. Joliff, M. Golombek, K. Lewis, T. Parker, and J. Soderblom Sedimentary textures formed by aqueous processes, Erebus crater, Meridiani Planum, Mars Geology, December, 2006, v. 34, p. 1085-1088, doi:10.1130/G22985A.1
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:50345
Deposited By: Ruth Sustaita
Deposited On:13 Oct 2014 23:37
Last Modified:09 Mar 2020 13:18

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