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Martian Analogue - Section 2
Note: All Mars photos in this section are credit NASA/JPL-Caltech/MSSS. The photos are from the mast cameras on the Curiosity rover (Mars Science Laboratory) taken during the interval Aug.6, 2012 - May 31, 2021. Some photos have been stitched from 2 or more photos retrieved from the NASA online archive of raw images.
Subglacial bedrock brecciation at Gale crater
Pairs of pictures from Earth and Mars are shown above. The photo pairs contrast unbrecciated bedrock terrain with intensely brecciated bedrock terrain. The last photo illustrates mixed-mode brecciation showing bedrock frost heave, delamination of foliated bedrock by ice extrusion along with glacially shifted bedrock fragments. This occurrence was formed by the widespread penetration of pressurized subglacial groundwater into frozen sedimentary rock. A similar process might have operated at Gale Crater.
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