Ancient Water Systems on Mars

Dr. John Grant

Holden Crater

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Interest in the history of water activity on Mars is driven by the question of whether evidence of life, past or current, can be found on another planet. Mapping of drainage patterns and associated deposits in Margaritifer Terra provides evidence of ancient aqueous activity that may be analogous to processes occurring on the Earth. Margaritifer Terra is located at the eastern end of Valles Marineris and is characterized by well-preserved valleys, channels, as well as geological features like impact craters that appear to have been erosionally modified by water.

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