Tag Archives: lineated valley fill

THEMIS: Coloe Fossae

THEMIS Image of the Day, July 22, 2014. The channels in this VIS image are part of Coloe Fossae, a series of linear depressions on the northeast margin of Terra Sabaea. More THEMIS Images of the Day by geological topic.

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Debris aprons and valley fill hold ancient ice several hundred million years old

Along the edge of the crustal dichotomy, where the southern highlands step down onto the northern plains, lies a landscape of mesas, buttes, and valleys. Valleys appear choked with linear streams of debris, and on the flanks of many mesas … Continue reading

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Latitude controlled Amazonian ice flows

Signs of underground ice deposited in the Amazonian period (the most recent in Martian history) are common in many places on Mars. Evidence includes tropical mountain glacier deposits, lobate debris aprons, lineated valley fill, concentric crater fill, and pedestal craters. … Continue reading

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