- The rough, hilly area surrounding an impact crater. It is composed of the ejecta that has fallen back to the surface, and usually extends one to three crater radii from the rim of the crater.
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Ejecta blanket — An ejecta blanket is a generally symmetrical apron of ejecta that surrounds a crater; it is layered thickly at the crater’s rim and thin to discontinuous at the blanket’s outer edge.cite web url=http://www.daviddarling.info/encyclopedia/E/ejecta… … Wikipedia
Blanket (disambiguation) — A blanket is a large, usually rectangular piece of thick bedding materialTypes of blanket* Afghan blanket, colored wool knitted or crocheted in geometric shapes * Blanket capote, blanket used as a coat, as by frontiersmen and mountaineers *… … Wikipedia
Tolstoj quadrangle — The Tolstoj quadrangle in the equatorial region of Mercury runs from 144 to 216° longitude and 25 to 25° latitude. It was provisionally called Tir , but renamed after Leo Tolstoy by the International Astronomical Union in 1976. [International… … Wikipedia
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meteorite crater — crater (def. 2). * * * Depression that results from the impact of a meteorite with a solid object in space. Impact craters have been discovered on Earth, the Moon, Mars, other planets and satellites, and asteroids; they probably occur on… … Universalium
Tolstoj (crater) — Mercury crater data caption = latitude = 16.3 N or S = S longitude = 163.5 E or W = W diameter = 390 km depth = region = Tolstoj quadrangle eponym = Leo TolstoyTolstoj is a large, ancient impact crater at latitude 15, longitude 165 on Mercury. It … Wikipedia
Martian dichotomy — The most conspicuous feature of Martian surface geology is a sharp contrast, known as the Martian dichotomy, between the rugged southern highlands and the relatively smooth northern basins. The two hemispheres differ in elevation by 1 to… … Wikipedia
Mercury (planet) — Mercury ☿ … Wikipedia
Geology of Mercury — The surface of Mercury is dominated by impact craters, and lava plains similar in some respects to the lunar maria. Other notable features include scarps and mineral deposits (possibly ice) inside craters at the poles. Currently, the surface is… … Wikipedia
Geology of solar terrestrial planets — The geology of solar terrestrial planet mainly deals with the geological aspects of four planets of the Solar system namely, Mercury, Venus, Earth and Mars and one terrestrial dwarf planet, Ceres. Objects like Pluto are similar to terrestrial… … Wikipedia