| 词条 | Montevallo (crater) |
| 释义 |
| titlecolor = #FA8072 | title = Montevallo Crater | image = Montevallo Crater.jpg | image_size = 200px | caption = Montevallo Crater, as seen by THEMIS. Image shows a landslide on the north rim. | coordinate_title = Coordinates | globe = Mars | coordinates = {{coord|15.4|N|54.4|W|globe:mars_type:landmark|display=inline,title}} | diameter = 51.9 km | eponym = Montevallo, Alabama, USA }}Montevallo is a crater on Mars, located in the Lunae Palus quadrangle at 15.4° N and 54.4° W. It measures 51.9 kilometers in diameter and was named after the town Montevallo in Alabama, United States. The name was approved by IAU's Working Group for Planetary System Nomenclature in 1988.[1] 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] See also
References1. ^{{cite web|title=Gazetteer of Planetary Nomenclature – Montevallo |url= https://planetarynames.wr.usgs.gov/Feature/4021 |website= usgs.gov |publisher= International Astronomical Union |accessdate= 9 August 2017}} {{Geography of Mars}}{{portal bar|Mars}}{{Mars-stub}}{{crater-stub}}2. ^http://www.lpi.usra.edu/publications/slidesets/stones/ 3. ^{{cite book|author=Hugh H. Kieffer|title=Mars|url=https://books.google.com/books?id=NoDvAAAAMAAJ|accessdate=7 March 2011|date=1992|publisher=University of Arizona Press|isbn=978-0-8165-1257-7}} 2 : Impact craters on Mars|Lunae Palus quadrangle |
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