Cerulli (crater)
Cerulli (crater)
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 Map of Ismenius Lacus quadrangle which is located just north of Arabia, a large bright area of Mars. | |
| Planet | Mars |
|---|---|
| Coordinates | 32°30′N 337°54′W / 32.5°N 337.9°W / 32.5; -337.9Coordinates: 32°30′N 337°54′W / 32.5°N 337.9°W / 32.5; -337.9 |
| Diameter | 130 km |
| Eponym | Vicenzo Cerulli, an Italian astronomer (1859-1927) |
Cerulli Crater is a crater in the Ismenius Lacus quadrangle on Mars with a diameter of 130 km. It is located at
32.5° north latitude and 337.9° west longitude. It lies in the northern hemisphere south of the very large crater Lyot (Martian crater).[1]
It is named after Vicenzo Cerulli, an Italian astronomer (1859–1927).[2]
Impact craters generally have a rim with ejecta around them; in contrast, volcanic craters usually do not have a rim or ejecta deposits. As craters get larger (greater than 10 km in diameter) they usually have a central peak.[3] The peak is caused by a rebound of the crater floor following the impact.[4] If one measures the diameter of a crater, the original depth can be estimated with various ratios. Because of this relationship, researchers have found that many Martian craters contain a great deal of material; much of it is believed to be ice deposited when the climate was different.[5] Sometimes, craters expose layers that were buried. Cerulli shows evidence of glacial activity in the past. The density of impact craters is used to determine the surface ages of Mars and other solar system bodies.[3] 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.[6]
Gallery[edit]
West side of Cerulli Crater, as seen by CTX camera on Mars Reconnaissance Orbiter.
Remains of ancient glacier on western wall of Cerulli Crater, as seen by CTX camera on Mars Reconnaissance Orbiter. Note: this is an enlargement of previous image.
East side of Cerulli Crater, as seen by CTX camera on Mars Reconnaissance Orbiter.
Crater, just North of Cerulli Crater, as seen by CTX camera on Mars Reconnaissance Orbiter. Floor is covered in "brain terrain." Arrows point to ring mold craters. Note: this is an enlargement of previous image.
Valleys on the Ejecta Blanket from Cerulli Crater, as seen by HiRISE.
Cerulli Crater Channels, as seen by THEMIS. Channels are on the inner north rim of the crater.
Cerulli Crater, as seen by HiRISE.
See also[edit]
- Climate of Mars
- Fretted terrain
- Glacier
- Glaciers on Mars
- Impact crater
- Impact event
- Ismenius Lacus quadrangle
- List of craters on Mars
- Ore resources on Mars
- Planetary nomenclature
- Water on Mars
References[edit]
 | Wikimedia Commons has media related to Cerulli (Martian crater). |
^ Moore, P. et al. 1990. The Atlas of the Solar System. Cresent Books. NY
^ "Gazetteer of Planetary Nomenclature | Cerulli". usgs.gov. International Astronomical Union. Retrieved 4 March 2015.
^ ab http://www.lpi.usra.edu/publications/slidesets/stones/
^ Hugh H. Kieffer (1992). Mars. University of Arizona Press. ISBN 978-0-8165-1257-7. Retrieved 7 March 2011.
^ Garvin, J., et al. 2002. Global geometric properities of martian impact craters. Lunar Planet Sci. 33. Abstract @1255.
^ http://www.indiana.edu/~sierra/papers/2003/Patterson.html.
 | This article about the planet Mars or its moons is a stub. You can help Wikipedia by expanding it. |
 | This article about an extraterrestrial geological feature is a stub. You can help Wikipedia by expanding it. |
Categories:
- Ismenius Lacus quadrangle
- Impact craters on Mars
- Mars stubs
- Astrogeology stubs
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