Tag Archives: valleys

HiRISE: Terrain near Idaeus Fossae

Terrain near Idaeus Fossae. Many valleys occur all over Mars that reveal an extensive ancient history of liquid water erosion. While these valley systems are typically now covered with fine soils and sand dunes, the overall scale and shape of … Continue reading

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HiRISE: We found geology in a chaotic place

We found geology in a chaotic place. The terrain here lives up to its description as “chaotic:” we see small hills, mesas, buttes and valleys. This area is called Oxia Palus, and its debris likely came from Ravi Vallis, which … Continue reading

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THEMIS: Crater floor infill and valley

THEMIS Image of the Day, November 2, 2018. This VIS image shows a large linear depression in the center of an unnamed crater in Noachis Terra. This crater and the nearby Maunder and Asimov craters share this odd morphology. The … Continue reading

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HiRISE: Tributary valleys near Shalbatana Vallis

Tributary valleys near Shalbatana Vallis. One of the justifications for taking this image was to look for inner valley features such as terraces. Beautiful Mars series. [More at links]

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THEMIS: Ice-choked Mamers Valles

THEMIS Image of the Day, March 27, 2018. Today’s VIS image shows a section of Mamers Valles, located in Arabia Terra. The smooth material with flowlines that fills the valley channel is likely glacier ice, similar to valley glaciers in … Continue reading

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HiRISE: Fresh shallow valleys and fans in north Arabia Terra

Fresh shallow valleys and fans in north Arabia Terra. Beautiful Mars series.

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HiRISE: Crater tadpoles

This impact crater looks amusingly like a tadpole because of the valley that was carved by water that used to fill it. When the water level inside the crater increased, it breached the crater wall, flowed outward and formed a … Continue reading

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HiRISE: Fresh shallow valleys

Fresh shallow valleys. Beautiful Mars series.

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HiRISE: Branching valley in Syrtis Major region

A branching valley in Syrtis Major region. Beautiful Mars series.

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HiRISE: A small valley within a larger valley

A small valley within a larger valley in Terra Sirenum. Beautiful Mars series.

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