Tag Archives: fluvial landforms

Jezero Crater records two water-related events

Researchers from Brown University have completed a new analysis of an ancient Martian lake system in Jezero Crater, near the planet’s equator. The study finds that the onslaught of water that filled the crater was one of at least two … Continue reading

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THEMIS: Hrad Vallis

THEMIS Image of the Day, July 29, 2014. The channel in this VIS image is a portion of Hrad Vallis. More THEMIS Images of the Day by geological topic.

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New geologic map details Reull, Waikato valleys

A new geologic map of part of the ancient Martian highlands produced by Scott C. Mest and David A. Crown of the Planetary Science Institute provides new insights into the planet’s history of water modifying the surface. “This map depicts … Continue reading

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THEMIS: Kasei Valles islands

THEMIS Image of the Day, June 6, 2014. There are several streamlined islands in this VIS image of Kasei Valles. This image is located near the region where Kasei Valles empties into Chryse Planitia. More THEMIS Images of the Day … Continue reading

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Aeolis Serpens, Mars’ longest sinuous ridge, is an ancient riverbed

A linear ridge that winds for more than 200 kilometers (120 miles) through part of South Australia was a river channel roughly 10 million years ago. After the paleoriver stopped flowing, silica-rich groundwater seeped into the riverbed, cementing its sediments.

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Water-carved channels on crater debris

Medium-size craters less than 3 billion years old often show water-carved channels in their debris aprons, according to a new study of mid-latitude craters in Arabia Terra. Previous studies had reported that such features on ejecta aprons were rare. Nicolas … Continue reading

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