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Karla
Crater Name |
Location |
Latitude |
Longitude |
Diameter (km) |
Age (Ma)* |
Exposed |
Drilled |
Target Rock** |
Bolide Type*** |
Karla |
Russia |
N 54° 55' |
E 48° 2' |
10 |
5 ± 1 |
Y |
Y |
S |
- |
References 1. Basilevsky, A. T., Fel'dman, V.I., Kapustkina, I.G. and Kolesov,G.M., On the distribution of iridium in the rocks of terrestrial impact craters (in Russian). Geokhimiya, v. 6, pp. 781-790. 1984. 2. Grieve, R. A. F., The record of impact on Earth: Implications for a major Cretaceous/Tertiary impact event. Geological Society of America, Special Paper 190, pp. 25-37. 1982. 3. Gurov, E. P., Gurova, E. P., Impact structures on the Earth's surface (in Russian). Geologicheskii Zhurnal, v. 47, pp. 117-124. 1987. 4. Khryanina, L. P., Ivanov, O. P., Structure of meteorite craters and astroblemes (in Russian). Doklady Akademii Nauk SSSR, v. 233, pp. 457-460. 1977. 5. Masaitis, V. L., Danilin, A.N., Maschak, M.S., Raykhlin, A.I., Selivanovskaya, T.V. and Shadenkov,Ye.M., The Geology of Astroblemes (in Russian). Leningrad, Nedra, 231 p. 1980. 6. Masaitis, V. L., Mashchak, M.S., Raikhlin, A.I., Selivanovskaya, T.V., & Danilin,A., Meteorite craters and astroblemes in the USSR (in Russian). Doklady Akademii Nauk SSSR, v. 240, pp. 1191-1193. 1978. 7. Masaitis, V. L., Danilin, A.N., Karpov, G.M. and Raikhlin,A.I., Karla, Obolon' and Rotmistrovka astroblemes in the European part of the USSR (in Russian). Doklady Akademii Nauk SSSR, v. 230, pp. 174-177. 1976.
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* 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 - Metasedimetary 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)
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