Crater Name  Location  Latitude  Longitude  Diameter (km)  Age (Ma)  Exposed  Drilled  Target Rock**  Bolide Type***
 Kalkkop  South Africa  S 32° 43'  E 24° 26'  0.64  0.25 ± 0.05  Y  Y  S  -

1. Landsat Thematic Mapper

2. DEM image Provided by Dr. Carlos Roberto de Souza Filho

3 & 4. Image Provided by Dr. Carlos Roberto de Souza Filho


Blignaut, J. J. G., Rossouw, P.J., de Villiers, J. and Russell,H.D., The geology of the Schoorsteenberg Area, Cape Province. Department of Mines, Geological Survey, Union of South Africa, An Explanation of Sheet No. 166 (Schoorsteenberg), pp. 17-22. 1948.
Koeberl, C., African meteorite impact craters: Characteristics and geological importance. Journal of African Sciences, v. 18, pp. 263-295. 1994.
Koeberl, C., Reimold, W.U., Shirey, S.B. and Le Roux,F.G., Kalkkop crater, Cape Province, South Africa: Confirmation of impact origin using osmium isotope systematics. Geochimica et Cosmochimica Acta, v. 58, pp. 1229-1234. 1994.
Martini, J. E. J., Limestone and dolomite resources of the Republics of South Africa, Bophuthatswana, Ciskei, Transkei and Venda. Department of Mineral and Energy Affairs, Handbook 9, pp. 47. 1987.
Reimold, W. U., Koeberl, Ch, Reddering., The 1992 drill core from the Kalkkop impact crater, Eastern Cape Province, South Africa: stratigraphy, petrography, geochemistry and age, Journal of African Earth Sciences, Vol. 26 (4), pp. 573-592. 1998.
Reimold, W. U., Impact cratering - a review, with special reference to the economic importance of impacat structures and the southern African impact crater record. Earth, Moon and Planets, v. 70, pp. 21-45. 1995.
Reimold, W. U., Le Roux, F.G., Koeberl, C. and Shirey,S.B., Kalkkop crater, eastern Cape - A new impact crater in South Africa (abstract). Lunar and Planetary Science XXIV, pp. 1197-1198. 1993.
Reimold, W. U., Grieve, R.A.F. and Levin,G., Kalkkop crater in the eastern Cape - a good candidate for an impact structure (abstract). Lunar and Planetary Science XXIII, pp. 1141-1142. 1992.
* pre-1977 K-Ar, Ar-Ar and Rb-Sr ages recalculated using the decay constants of Steiger and Jager (1977) Ages in millions of years (Ma) before present.

** Abbreviations: C - Crystalline Target; C-Ms - Metasedimentary Target; M - Mixed Target (i.e.sedimentary strata overlying crystalline basement); S - sedimentary target (i.e. no crystalline rocks affected by the impact event). From Osinski. G. R., Spray J. G., and Grieve R. A. F. 2007. Impact melting in sedimentary target rocks: A synthesis. In The Sedimentary Record of Meteorite Impacts, Geological Society of America Special Paper. Editors: Evans K. Horton W., King D., Morrow J., and Warme J. Geological Society of America: Boulder, in press.

***From Koeberl,C. Identification of meteoritic components in impactites. 1998, Koeberl, C. The Geochemistry and Cosmochemistry of Impacts. 2007 and PASSC Files. (IAB, IIIAB, IIIB, IIID - Iron Meteorite)