manicouagan

Obolon'

 Crater Name  Location  Latitude  Longitude  Diameter (km)  Age (Ma)  Exposed  Drilled  Target Rock**  Bolide Type***
 Obolon'  Ukraine  N 49° 35'  E 32° 55'  20  169 ± 7  N  Y  M  Iron?

A. Schematic cross-section of the Obolon impact structure in the NW-SE direction (from Gurov et al., 2000): 1 - overlaying sediments; 2 - filling sediments; 3 - allogenous impact rocks; 4 - pre-impact sediments of the crater basement; 5 - rocks of the crystalline basement. B. Sections of the filling and allogenous rocks of Obolon impact structure in the boreholes Nos 6301 and 5302: 1 - clays, shales; 2 - sandstones; 3 - allogenous breccias; 4 - rocks of the crystalline basement

References
Cockell, C. S., Lee, P., The Biology of Impact Craters - a review. Biol. Rev., 77, P. 279 - 310. 2002.
Dabizha, A. I., Fel'dman, V. I., The geophysical properties of some astroblemes in the USSR (in Russian). Meteoritika, v. 40, pp. 91-101. 1982.
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. and Rakitskaya,R.B., Impact diamonds in the craters of the Ukrainian shield (abstract). Meteoritics, v. 30, pp. 515-516. 1995.
Gurov, E. P., Gurova, E. P., Impact structures on the Earth's surface (in Russian). Geologicheskii Zhurnal, v. 47, pp. 117-124. 1987.
Gurov, E. P., Ryabenko, V. A., Impact structures of the Ukrainian shield. International Geological Congress 27, Moscow, Field Guide Excursion 098, pp. 143-159. 1984.
Gurov, E. P., Val'ter, A.A. and Rakitskaya,R.B., Coesite in rocks of meteorite explosion craters on the Ukrainian shield (in Russian). Mineralogicheskoye Obshchestvo Zapiski, v. 107, pp. 362-365. 1978.
Gurov, E., Gurova, E., Chernenko, Y., Yamnichenko, A. The Obolon impact structure, Ukraine, and its ejecta deposits. Meteoritics & Planetary Science. Vol.44, pp.389. 2009.
Gurov, E.P., and Gurova, E.P. Impact-melt composition of the Obolon Crater; chlorine as a possible indicator of the submarine crater formation. Meteoritics & Planetary Science, vol.30, pp.515. 1995.
Krayushkin V.A., Gurov, E. P., To a perspective of exploration for oil and gas in astroblemes of Ukraine (in Russian). Geological Journal, v. 1, pp. 17-27. 1989.
Masaitis V.L., Impact structures of Northeastern Eurasia - the territories of Russia and adjacent countries, 1999.
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.
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.
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.
Ryabenko, V. A., Val'ter, A. A., Meteorite explosion craters as an object of study in modern geology (in Russian). Visnyk, v. 1-6, pp. 7-16. 1977.
Skrynnik, G. V., Meteorite craters on the Earth (in Russian). Astronomicheskii Vestnik, v. 11, pp. 198-210. 1977.
Spray, J. G., Kelley, S.P. and Rowley,D.B., Evidence for a late Triassic multiple impact event on Earth. Nature, v. 392, pp. 171-173. 1998.
Val'ter, A. A., Ryabenko, V. A., Impact craters of the Ukrainian shield (in Russian). Izd-vo Naukova Dumka, Kiev, 154 p. 1977.
Val'ter, A. A., Gurov, E.P. and Ryabenko,V.A., The Obolon' fossil meteorite crater astrobleme on the northeast flank of the Ukrainian Shield (in Russian). Doklady Akademii Nauk SSSR, v. 232, pp. 170-173. 1976.
Westbroek, H., Stewart, R., The formation, morphology, and economic potential of meteorite impact craters, CREWES Research Report v. 8, p. 1-26. 1996.
* 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)