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Ancient Impact and Aqueous Processes at Endeavour Crater, Mars

by McLennan, S. M. , Rice, M. S. , Knoll, A. H. , Schröder, C. , Cohen, B. A. , Calef, F. , Ming, D. W. , Bell, J. F. , Paulsen, G. , Yen, A. S. , Mittlefehldt, D. W. , Hurowitz, J. A. , Gellert, R. , Johnson, J. R. , Li, R. , Zacny, K. , Farrand, W. H. , Arvidson, R. E. , Jolliff, B. L. , Ruff, S. W. , Parker, T. J. , Herkenhoff, K. E. , Crumpler, L. A. , Clark, B. C. , de Souza, P. A. , Squyres, S. W. , Grant, J.

in Alterations / Aqueous solutions / Astronomy / Breccia / Calcium Sulfate / Craters / Dead wood / Earth, ocean, space / Ejecta / Enrichment / Exact sciences and technology / Extraterrestrial Environment / Geological Phenomena / Gypsum / Impact craters / Low temperature / Mars / Mars exploration / Meteoroids / Planetary, asteroid, and satellite characteristics and properties / Planetology / Planets, their satellites and rings. Asteroids / Rock textures / Sand / sandstone / Sandstones / Sedimentary rocks / Sediments / Silicates / Solar system / Spacecraft / Spectral reflectance / Stratigraphy / Sulfates / Surface features, cratering, and topography / Veins / Veins (geology) / Water / Zinc

2012

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Ancient Impact and Aqueous Processes at Endeavour Crater, Mars

2012

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2012

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Journal Article

Ancient Impact and Aqueous Processes at Endeavour Crater, Mars

McLennan, S. M.,

Rice, M. S.,

Knoll, A. H.,

Schröder, C.,

Cohen, B. A.,

Calef, F.,

Ming, D. W.,

Bell, J. F.,

Paulsen, G.,

Yen, A. S.,

Mittlefehldt, D. W.,

Hurowitz, J. A.,

Gellert, R.,

Johnson, J. R.,

Li, R.,

Zacny, K.,

Farrand, W. H.,

Arvidson, R. E.,

Jolliff, B. L.,

Ruff, S. W.,

Parker, T. J.,

Herkenhoff, K. E.,

Crumpler, L. A.,

Clark, B. C.,

de Souza, P. A.,

Squyres, S. W.,

Grant, J.

2012

Overview

The rover Opportunity has investigated the rim of Endeavour Crater, a large ancient impact crater on Mars. Basaltic breccias produced by the impact form the rim deposits, with stratigraphy similar to that observed at similar-sized craters on Earth. Highly localized zinc enrichments in some breccia materials suggest hydrothermal alteration of rim deposits. Gypsum-rich veins cut sedimentary rocks adjacent to the crater rim. The gypsum was precipitated from low-temperature aqueous fluids flowing upward from the ancient materials of the rim, leading temporarily to potentially habitable conditions and providing some of the waters involved in formation of the ubiquitous sulfate-rich sandstones of the Meridiani region.

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Publisher

American Association for the Advancement of Science,The American Association for the Advancement of Science

Subject

/ Breccia

/ Craters