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Earth Impact Database Sorted by : | Age | Diameter | Name |

 

Bigach

Crater Name
Location
Latitude
Longitude
Diameter (km)
Age (Ma)*
Exposed
Drilled
Target Rock**
Bolide Type***
Bigach
Kazakhstan
N 48° 34'
E 82° 1'
8
5 ± 3
Y
Y
M
-

 

***

References
Cockell, C. S., Lee, P., The Biology of Impact Craters - a review. Biol. Rev., 77, P. 279 - 310. 2002.
Garvin, J. B., Grieve, R.A.F. and Schnetzler,C.C., Satellite remote sensing signatures of impact structures (abstract). Meteoritics, v. 30, pp. 509. 1995.
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.
Gurov, E. P., Gurova, E. P., Impact structures on the Earth's surface (in Russian). Geologicheskii Zhurnal, v. 47, pp. 117-124. 1987.
Hörz, F., Ostertag, R and Rainey,D A., Bunte breccia of the Ries: Continuous deposits of large impact craters. Reviews of Geophysics and Space Physics, v. 21, pp. 1667-1725. 1983.
Kiselev, N. P., Korotushenko, Yu G., The Bigatch astrobleme in eastern Kazakhstan (in Russian). Meteoritika, v. 45, pp. 119-121. 1986.

 

* 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)

 

 

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