Moreux (crater)


Moreux - PIA00420 (cropped).jpg
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
QuadrangleIsmenius Lacus quadrangle
Diameter138 km
EponymTheophile Moreux
MOLA map of Moreux crater and other nearby craters. Colors indicate elevations.

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]

Ismeniae Fossae are located to the west of Moreux.


Moreux'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 the 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.


See also


  1. ^ "Gazetteer of Planetary Nomenclature | Moreux". 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. ^
  4. ^ Hugh H. Kieffer (1992). Mars. University of Arizona Press. ISBN 978-0-8165-1257-7. Retrieved 7 March 2011.