Burton (crater)
Burton (crater)
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 Middle section of Burton Crater, showing central mound, as seen by CTX camera (on Mars Reconnaissance Orbiter). | |
| Planet | Mars |
|---|---|
| Coordinates | 18°42′S 164°18′W / 18.7°S 164.3°W / -18.7; -164.3Coordinates: 18°42′S 164°18′W / 18.7°S 164.3°W / -18.7; -164.3 |
| Diameter | 123.2 km |
| Eponym | Charles E. Burton |
Central mound of Burton Crater, showing dark slope streaks, as seen by CTX camera (on Mars Reconnaissance Orbiter). Note: this is an enlargement of the previous image of Burton Crater from the table.
Burton is an impact crater in the Memnonia quadrangle of Mars, located at 14.1°S latitude and 156.4°W longitude, and is inside Terra Sirenum. It is 123.0 km in diameter and was named after Charles E. Burton, and the name was approved in 1973.[1]
Nearby notable craters include Marca to the north-northwest, Cobres to the northeast, Comas Solá to the south-southwest and Williams further southwest. The small Termes Vallis is north of the crater close to Marca, to the east is a large and long valley known as Mangala Valles.
It has a central peak. 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]
Dark Slope Streaks[edit]
Many places on Mars show dark streaks on steep slopes like crater walls. It seems that the youngest streaks are dark; they become lighter with age. Often they begin as a small narrow spot then widen and extend downhill for hundreds of meters. They have been seen to travel around obstacles, like boulders.[4]
Several ideas have been advanced to explain the streaks. Some involve water or even the growth of organisms.[5][6][7][8] It is most generally accepted that they represent avalanches of dust. The streaks appear in areas covered with dust. When a thin layer of dust is removed, the underlying surface is dark. Much of the Martian surface is covered with dust. Fine dust settles out of the atmosphere covering everything.
Dark streaks can be seen in the image to the right of Burton Crater that was taken by CTX.
See also[edit]
- Climate of Mars
- Dark slope streaks
- Geology of Mars
- Impact crater
- Impact event
- List of craters on Mars
- Ore resources on Mars
- Planetary nomenclature
References[edit]
^ "Gazetteer of Planetary Nomenclature | Burton". usgs.gov. International Astronomical Union. Retrieved 4 March 2015.
^ 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.
^ http://www.space.com/image_of_day_080730.html
^ http://www.spcae.com/scienceastronomy/streaks_mars_021211.html
^ http://www.space.com/scienceastronomy/streaks_mars_streaks_030328.html
^ http://www.space.com/scienceastronomy/mars_
^ http://www.space.com/scienceastronomy/streaks_mars_021200.html
Categories:
- Memnonia quadrangle
- Impact craters on Mars
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