Arkhangelsky Crater Dunes, as seen by THEMIS. Click on image to see possible gullies on central peak.
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|Eponym||A.D. Arkhangelsky a Russian geologist|
Arkhargelsky Crater, as seen by CTX camera (on Mars Reconnaissance Orbiter). Dark spots are dunes.
Wide view of gullies in Arkhangelsky Crater, as seen by HiRISE under HiWish program
Why are Craters important?
The density of impact craters is used to determine the surface ages of Mars and other solar system bodies. The older the surface, the more craters present. Crater shapes can reveal the presence of ground ice.
The area around craters may be rich in minerals. On Mars, heat from the impact melts ice in the ground. Water from the melting ice dissolves minerals, and then deposits them in cracks or faults that were produced with the impact. This process, called hydrothermal alteration, is a major way in which ore deposits are produced. The area around Martian craters may be rich in useful ores for the future colonization of Mars.
- Climate of Mars
- Glaciers on Mars
- Impact crater
- List of craters on Mars
- Water on Mars
- Planetary nomenclature
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