Evidence from Opportunity's Microscopic Imager for Water on Meridiani Planum-Reference-Cited by-同舟云学术

Evidence from Opportunity's Microscopic Imager for Water on Meridiani Planum

Published:2004-12-03 Issue:5702 Volume:306 Page:1727-1730
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Herkenhoff K. E.¹²³⁴⁵,Squyres S. W.¹²³⁴⁵,Arvidson R.¹²³⁴⁵,Bass D. S.¹²³⁴⁵,Bell J. F.¹²³⁴⁵,Bertelsen P.¹²³⁴⁵,Ehlmann B. L.¹²³⁴⁵,Farrand W.¹²³⁴⁵,Gaddis L.¹²³⁴⁵,Greeley R.¹²³⁴⁵,Grotzinger J.¹²³⁴⁵,Hayes A. G.¹²³⁴⁵,Hviid S. F.¹²³⁴⁵,Johnson J. R.¹²³⁴⁵,Jolliff B.¹²³⁴⁵,Kinch K. M.¹²³⁴⁵,Knoll A. H.¹²³⁴⁵,Madsen M. B.¹²³⁴⁵,Maki J. N.¹²³⁴⁵,McLennan S. M.¹²³⁴⁵,McSween H. Y.¹²³⁴⁵,Ming D. W.¹²³⁴⁵,Rice J. W.¹²³⁴⁵,Richter L.¹²³⁴⁵,Sims M.¹²³⁴⁵,Smith P. H.¹²³⁴⁵,Soderblom L. A.¹²³⁴⁵,Spanovich N.¹²³⁴⁵,Sullivan R.¹²³⁴⁵,Thompson S.¹²³⁴⁵,Wdowiak T.¹²³⁴⁵,Weitz C.¹²³⁴⁵,Whelley P.¹²³⁴⁵

Affiliation:

1. U.S. Geological Survey Astrogeology Team, Flagstaff, AZ 86001, USA.

2. Department of Astronomy, Space Sciences Building, Cornell University, Ithaca, NY 14853, USA.

3. Department of Earth and Space Sciences, Washington University, St. Louis, MO 63130, USA.

4. Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA.

5. Center for Planetary Science, Danish Space Research Institute and Niels Bohr Institute for Astronomy, Physics and Geophysics, University of Copenhagen, Denmark.

Abstract

The Microscopic Imager on the Opportunity rover analyzed textures of soils and rocks at Meridiani Planum at a scale of 31 micrometers per pixel. The uppermost millimeter of some soils is weakly cemented, whereas other soils show little evidence of cohesion. Rock outcrops are laminated on a millimeter scale; image mosaics of cross-stratification suggest that some sediments were deposited by flowing water. Vugs in some outcrop faces are probably molds formed by dissolution of relatively soluble minerals during diagenesis. Microscopic images support the hypothesis that hematite-rich spherules observed in outcrops and soils also formed diagenetically as concretions.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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