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| | Impact Crater Encyclopedia Article, Definition, History, Biography (Site not responding. Last check: 2007-10-24) |
 | | An impact crater (impact basin or sometimes crater) is a circular depression on a surface, usually referring to a planet, moon, asteroid, or other celestial body, caused by a collision of a smaller body (meteorite) with the surface. |
 | | In the center of craters on Earth a crater lake often accumulates, and a central island or peak (caused by rebounding crustal rock after the impact) is usually a prominent feature in the lake. |
 | | Note: it is reported in the scientific literature that some "shock" features, such as small shatter cones, which are often reported as being associated only with impact events, have been found in terrestrial volcanic ejecta. |
| www.thearts.us /encyclopedia/Impact_crater (2137 words) |
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