Ridges near Nirgal Valles
In this observation from NASA's Mars Reconnaissance Orbiter (MRO), we see a set of straight ridges in ancient bedrock near Nirgal Valles. The patterns indicate fractures from tectonic stresses, but how have they been hardened to now stand in positive relief after billions of years of erosion? It is possible that groundwater flowed through the fractures, depositing various durable minerals, some of which we see in diverse colors. https://photojournal.jpl.nasa.gov/catalog/PIA22333
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Details
NASA ID
PIA22333
Date Created
March 5, 2018
Center
JPL
Media Type
image
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