Tag Archives: stream erosion

THEMIS: Channel within a channel in Terra Sirenum

THEMIS Image of the Day, April 9, 2018. Today’s VIS image is located along the northern margin of Terra Sirenum. This unnamed channel contains a small channel within a larger channel. This would indicate two separate channel forming events. The … Continue reading

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THEMIS: Hebrus Valles

THEMIS Image of the Day, January 12, 2016. This VIS image shows a portion of Hebrus Valles. This channel system was formed by liquid flow of either water or lava, or a combination of both. There is a streamlined island … Continue reading

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Valley networks were eroded quckly

Networks of valleys cross much of the ancient surface of Mars, and along with deltas and other features these all show that the environment once warm and wet enough to sustain liquid water at the surface. But when? And for … Continue reading

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