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

 

Chukcha

Crater Name
Location
Latitude
Longitude
Diameter (km)
Age (Ma)*
Exposed
Drilled
Target Rock**
Bolide Type***
Chukcha
Russia
N 75° 42'
E 97° 48'
6
< 70
Y
Y
M
-

 

References
Vishnevsky, S. A., The Chykcha impact crater, Taymyr peninsula: Heavily eroded astrobleme of (K2-Pg1)? age (abstract). Meteoritics, v. 30, pp. 591. 1995.
Vishnevsky, S. A., Deeply-eroded astroblemes, soft and hard target rocks examples: Scarce data and some problems of recognition (abstract). "Impact Cratering and Evolution of Planet Earth", European Science Foundation, First International Workshop, Nördlingen Germany. 1993.
Vishnevsky, S. A., The Chukchinskaya Basin: An eroded impact crater in northern Taimyr. Russian Academy of Sciences, Novosibirsk, pp. 1-49. 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)

 

 

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