File:169384main pia09189-330.jpg

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Description	169384main pia09189-330.jpg 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
Permission ( Reusing this file)	PD-USGOV-NASA.

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