Kalkkop crater
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Kalkkop is an impact crater and can be found on a private farm 48.3 km south west of the town of Graaff-Reinet in the Eastern Cape Province of South Africa. Co-ordinates (32°43'S, 24°34'E). The name is derived from two Afrikaans words, namely "kalk" meaning limestone and "kop" meaning head.
The meteor impact occurred just under 1.8 million years ago (in Pleistocene) on what is now the flat Karoo landscape. It left a crater 640 m in diameter and a few hundred metres deep. Over time, draining water left a limestone deposit 88.4 m deep. This lies over a breccia layer a further 210 m deep. Only a weathered circular ridge is still visible at the surface.
This is one of three confirmed impact sites within the Southern African region.
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