Temimichât-Ghallaman crater (Temimichat-Ghallaman crater)
Temimichât-Ghallaman crater is a very remote, large crater of unclear origin. Most likely it has been created by large meteorite but this has not been proved yet.
Map of the site
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Temimichat-Ghallaman crater was known to locals and was described by French explorer Théodore Andre Monod already in the 1950s. Nevertheless few scientists have visited this remote site in the inhospitable, almost lifeless plains of northern Mauritania.
Crater is formed in crystalline bedrock – 3.5 billion years old Precambrian gneisses and gabbro of Reguibat shield.
Rims of the crater are partly eroded, their height fluctuates from some meters to 35 m. The original circular form has been lost and now the crater looks rather hexagonal. The crater is filled with sediments – aeolian sand and silt.
The origin of this crater is unclear. Meteorite impact is just one of the possible explanations, although some aspects of the disturbed rocks show a possible impact event – re-melted granitic clasts, deformation effects, on the edges of crater are some blocks that seem to have a glassy cover.
- Rossi, A. P.; Baliva, A.; Piluso, E., New Indications for an impact origin of Temimichat crater, Mauritania. EGS – AGU – EUG Joint Assembly, Abstracts from the meeting held in Nice, France, 6 – 11 April 2003, abstract #7403. Accessed on December 26, 2012.
Temimichât-Ghallaman crater is included in the following article:
Almost all of Mauritania today is desert – somewhere desolate, somewhere – with some plants, lakes, and animals.
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This category includes outstanding impact craters – detectable scars on the surface of Earth left by a body coming from outer space. The category includes also meteorites – natural objects from outer space.
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