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Escalante (Martian crater)








Escalante (Martian crater)


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Escalante Crater

Escalante Crater Wall.JPG
Escalante Crater Wall, as seen by HiRISE. Picture on left is enlargement of the one on right. Scale bar is long.

Planet
Mars
Coordinates
0°12′N 244°42′W / 0.2°N 244.7°W / 0.2; -244.7Coordinates: 0°12′N 244°42′W / 0.2°N 244.7°W / 0.2; -244.7
Eponym
Mexican astronomer F. Escalante

Escalante Crater is an impact crater in the Amenthes quadrangle of Mars. It is located at
0.2° N and 244.7° W. It is 79.3 km (49.3 mi) in diameter, and was named after Mexican astronomer (c. 1930) F. Escalante.[1]


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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.[2] The peak is caused by a rebound of the crater floor following the impact.[3] 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.[4] Sometimes craters expose layers that were buried. Rocks from deep underground are tossed onto the surface. Hence, craters can show us what lies deep under the surface.



See also[edit]


  • Climate of Mars

  • Impact crater

  • Impact event

  • List of craters on Mars

  • Ore resources on Mars

  • Planetary nomenclature


References[edit]




  1. ^ Gazetteer of Planetary Nomenclature Feature Information


  2. ^ http://www.lpi.usra.edu/publications/slidesets/stones/


  3. ^ Hugh H. Kieffer (1992). Mars. University of Arizona Press. ISBN 978-0-8165-1257-7. Retrieved 7 March 2011. 


  4. ^ Garvin, J., et al. 2002. Global geometric properities of martian impact craters. Lunar Planet Sci. 33. Abstract @1255.












Retrieved from "https://en.wikipedia.org/w/index.php?title=Escalante_(Martian_crater)&oldid=847740458"





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