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File:169384main pia09189-330.jpg

169384main_pia09189-330.jpg ‎(330 × 230 pixels, file size: 40 KB, MIME type: image/jpeg)
Description
English: NASA

http://www.nasa.gov/mission_pages/MRO/multimedia/pia09189.html

Ridges as Evidence of Fluid Alteration

Tectonic fractures within the Candor Chasma region of Valles Marineris, Mars, retain ridge-like shapes as the surrounding bedrock erodes away. This points to past episodes of fluid alteration along the fractures and reveals clues into past fluid flow and geochemical conditions below the surface.
Date 2007-02-18 (original upload date)
Source Transferred from en.wikipedia; transferred to Commons by User:Mike Peel using CommonsHelper.
Author Original uploader was Rickyjames at en.wikipedia
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