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Coordinates: 32°42′29″S 24°25′56″E / 32.70806°S 24.43222°E

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Kalkkop crater

Impact crater/structure
Confidence	Confirmed
Diameter	0.64 kilometres (0.40 mi)
Age	0.25 ± 0.05 Ma
Exposed	Yes
Drilled	Yes
Country	South Africa
Province	Eastern Cape Province
Municipality	Aberdeen, Eastern Cape

Kalkkop is an impact crater which can be found on a private farm 50 kilometres (31 mi) south east of the town of Aberdeen, Eastern Cape, in the Eastern Cape Province of South Africa. The name is derived from two Afrikaans words, namely "kalk" meaning limestone and "kop" meaning head.^[1]

The meteorite impact occurred about 250,000 years ago (Pleistocene) on what is now the flat Karoo landscape. It left a crater 640 metres in diameter and a few hundred metres deep. Over time, draining water left a limestone deposit 88 metres deep. This lies over a breccia layer a further 210 metres deep. Only a weathered circular ridge is still visible at the surface.

This is one of four confirmed impact sites in South Africa and six within the Southern African region.^[2]

References

^ "Kalkkop". Earth Impact Database. Planetary and Space Science Centre University of New Brunswick Fredericton. Retrieved 15 August 2009.
^ "Africa". Earth Impact Database. Planetary and Space Science Centre University of New Brunswick Fredericton. Retrieved 4 May 2017.

32°42′29″S 24°25′56″E / 32.70806°S 24.43222°E / -32.70806; 24.43222

v t e Impact cratering on Earth
Impact crater Impact event
Lists	Worldwide Africa Antarctica Asia and Russia Australia Europe North America South America By country Possible
Confirmed ≥20 km diameter	Acraman Amelia Creek Araguainha Beaverhead Boltysh Carswell Charlevoix Chesapeake Bay Chicxulub Clearwater East and West Gosses Bluff Haughton Kamensk Kara Karakul Keurusselkä Lappajärvi Logancha Manicouagan Manson Mistastin Mjølnir Montagnais Morokweng Nördlinger Ries Obolon' Popigai Presqu'île Puchezh-Katunki Rochechouart Saint Martin Shoemaker Siljan Ring Slate Islands Steen River Strangways Sudbury Tookoonooka Tunnunik Vredefort Woodleigh Yarrabubba
Topics	Alvarez hypothesis Australite Breccia Coesite Complex crater Cretaceous–Paleogene boundary Cryptoexplosion Ejecta blanket Impact crater Impact structure Impactite Late Heavy Bombardment Lechatelierite Meteorite Moldavite Ordovician meteor event Philippinite Planar deformation features Shatter cone Shock metamorphism Shocked quartz Stishovite Suevite Tektite
Research	Ralph Belknap Baldwin Daniel Barringer Barringer Medal Edward C. T. Chao Robert S. Dietz William Kenneth Hartmann H. Jay Melosh Graham Ryder Peter H. Schultz Eugene Merle Shoemaker Earth Impact Database Impact Field Studies Group Lunar and Planetary Institute Traces of Catastrophe

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