Tag Archives: Orson Welles Crater

HiRISE: Collapsed material on the floor of Orson Welles Crater

Collapsed material on the floor of Orson Welles Crater. This observation captures collapsed blocks of material on floor of Orson Welles Crater. Layers and the clay minerals found in this 125-kilometer crater are evidence that it once contained a lake. … Continue reading

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HiRISE: The sand always gets through

The sand always gets through. There are also eroded layers here in Orson Welles Crater. Beautiful Mars series. [More at links]

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HiRISE: Dunes flowing…

Dunes flowing like martian wine. There are also some nice ridges and light-toned deposits here in Orson Welles Crater. Beautiful Mars series.

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HiRISE: Sinuous ridge on Orson Welles bajada

Alluvial fans are piles of debris dumped by rivers when they emerge from the mountains and enter a mostly dry valley. A bajada (such as this example named after the famous American filmmaker) consists of a series of coalescing alluvial … Continue reading

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HiRISE: Wall of Orson Welles Crater

Beautiful Mars series. Wall of Orson Welles Crater. More Beautiful Mars images.

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