Ancient Impact and Aqueous Processes at Endeavour Crater, Mars

Author:

Squyres S. W.1,Arvidson R. E.2,Bell J. F.3,Calef F.4,Clark B. C.5,Cohen B. A.6,Crumpler L. A.7,de Souza P. A.8,Farrand W. H.5,Gellert R.9,Grant J.10,Herkenhoff K. E.11,Hurowitz J. A.4,Johnson J. R.12,Jolliff B. L.2,Knoll A. H.13,Li R.14,McLennan S. M.15,Ming D. W.16,Mittlefehldt D. W.16,Parker T. J.4,Paulsen G.17,Rice M. S.1,Ruff S. W.3,Schröder C.18,Yen A. S.4,Zacny K.17

Affiliation:

1. Department of Astronomy, Cornell University, Ithaca, NY 14853, USA.

2. Department of Earth and Planetary Sciences, Washington University, St. Louis, MO 63031, USA.

3. School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287, USA.

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

5. Space Science Institute, Boulder, CO 80301, USA.

6. NASA Marshall Space Flight Center, Huntsville, AL 35812, USA.

7. New Mexico Museum of Natural History & Science, Albuquerque, NM 87104, USA.

8. Human Interface Technology Laboratory, University of Tasmania, Launceston TAS 7250, Australia.

9. Department of Physics, University of Guelph, Guelph, Ontario N1G 2W1, Canada.

10. Center for Earth and Planetary Studies, Smithsonian Institution, Washington, DC 20560, USA.

11. U.S. Geological Survey, Astrogeology Science Center, Flagstaff, AZ 86001, USA.

12. Applied Physics Laboratory, Johns Hopkins University, Laurel, MD 20723, USA.

13. Botanical Museum, Harvard University, Cambridge, MA 02138, USA.

14. Department of Civil, Environmental, and Geodetic Engineering, Ohio State University, Columbus, OH 43210, USA.

15. Department of Geosciences, State University of New York, Stony Brook, NY 11794, USA.

16. Astromaterials Research and Exploration Science (ARES), NASA Johnson Space Center, Houston, TX 77058, USA.

17. Honeybee Robotics & Spacecraft Mechanisms Corporation, Pasadena, CA 91103, USA.

18. Universität Bayreuth und Eberhard Karls Universität, 72076 Tübingen, Germany.

Abstract

Martian Veins After more than 7 years of traveling across the Meridiani Planum region of Mars, the Mars Exploration rover Opportunity reached the Endeavour Crater, a 22-km-impact crater made of materials older than those previously investigated by the rover. Squyres et al. (p. 570 ) present a comprehensive analysis of the rim of this crater. Localized zinc enrichments that provide evidence for hydrothermal alteration and gypsum-rich veins that were precipitated from liquid water at a relatively low temperature provide a compelling case for aqueous alteration processes in this area at ancient times.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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