Ancient impact and aqueous processes at Endeavour Crater, Mars

By: , and 



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.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Ancient impact and aqueous processes at Endeavour Crater, Mars
Series title Science
DOI 10.1126/science.1220476
Volume 336
Issue 6081
Year Published 2012
Language English
Publisher Science
Contributing office(s) Astrogeology Science Center
Description 7 p.
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Science
First page 570
Last page 576
Other Geospatial Mars
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