Viking Orbiter 1 image with Baltisk crater above center | |
| Planet | Mars |
|---|---|
| Coordinates | 42°16′S 305°20′E / 42.27°S 305.34°E |
| Quadrangle | Argyre |
| Diameter | 50.75 km (31.53 mi) |
| Eponym | Baltiysk, Russia |
Baltisk is a crater in the Argyre quadrangle of Mars. It was named after a town in Russia in 1976. [1] Baltisk is located on the western edge of the Argyre impact basin. [2]
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Topo map showing the location of Baltisk crater and other nearby features -
Baltisk crater floor, as seen by HiRISE. Scale bar is 1000 meters long. Dark dunes are visible at the bottom of image on the left. -
Baltisk crater, as seen by CTX camera on MRO. Dark areas are dunes. Fans are visible in the lower right. -
Dunes in Baltisk crater, as seen by CTX camera. Note: this is an enlargement of a previous image. -
Fans in Baltisk crater, as seen by CTX camera. Note: this is an enlargement of a previous image. Arrows point to layered parts of the fans.
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]
See also
References
- ^ "Baltisk (crater)". Gazetteer of Planetary Nomenclature. USGS Astrogeology Research Program.
- ^ Moore, P. et al. 1990. The Atlas of the Solar System. Crescent Books. NY
- ^ "Stones, Wind, and Ice: A Guide to Martian Impact Craters".
- ^ Hugh H. Kieffer (1992). Mars. University of Arizona Press. ISBN 978-0-8165-1257-7. Retrieved 7 March 2011.
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