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Moreux is a crater in the Ismenius Lacus quadrangle on Mars with a diameter of 138 kilometers. It is located at 42.1° north latitude and 315.6° west longitude and was named by IAU's Working Group for Planetary System Nomenclature after Theophile Moreux, a French astronomer and meteorologist (1867–1954).[1]

Moreux Crater
Ismenius lacus.JPG
Map of Ismenius Lacus quadrangle which is located just north of Arabia, a large bright area of Mars. It contains large amounts of ice in glaciers that surround hills.
PlanetMars
Coordinates42°06′N 315°36′W / 42.1°N 315.6°W / 42.1; -315.6Coordinates: 42°06′N 315°36′W / 42.1°N 315.6°W / 42.1; -315.6
Diameter138 km
EponymTheophile Moreux, a French astronomer and meteorologist (1867-1954)

GlaciersEdit

Moreux Crater's appearance has been shaped by the action of glaciers. Recent research, using a variety of images from various cameras, discovered extensive glacial modification of the surfaces of Moreux Crater's rim, wall, and central peak. These changes were caused by the emplacement of ice-rich material when the climate underwent major changes.[2] The picture from HiRISE below shows possible kettles in Moreux Crater.

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] 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.

DunesEdit

See alsoEdit

ReferencesEdit

  1. ^ "Gazetteer of Planetary Nomenclature | Moreux". usgs.gov. International Astronomical Union. Retrieved 4 March 2015.
  2. ^ Rishitosh K., S. Sinha, S. Murty. 2015. Amazonian modification of Moreux crater: Record of recent and episodic glaciation in the Protonilus Mensae region of Mars. Icarus 245:122-144.
  3. ^ http://www.lpi.usra.edu/publications/slidesets/stones/
  4. ^ Hugh H. Kieffer (1992). Mars. University of Arizona Press. ISBN 978-0-8165-1257-7. Retrieved 7 March 2011.