Obolon' crater (Ukrainian: Оболонь) is a 20 km (12 mi) diameter buried meteoriteimpact crater situated about 200 km (120 mi) southeast of Kyiv in Ukraine (Poltava Oblast).[1][2]
The site has been drilled, which revealed the presence of shocked minerals and impact melt rock; the high chlorine content of the latter suggesting that the area was covered by shallow sea at the time of impact.[3]
One estimate puts the age at 169 ± 7 million years (Middle Jurassic).[4]
^Masaitis, V. L.; A. N. Danilin; G. M. Karpov & A. I. Raikhlin (1976). "Karla, Obolon' and Rotmistrovka astroblemes in the European part of the USSR". Doklady Akademii Nauk SSSR (in Russian). 230: 174–177.
^Val'ter, A. A.; E. P. Gurov & V. A. Ryabenko (1977). "The Obolon' fossil meteorite crater astrobleme on the northeast flank of the Ukrainian Shield". Doklady Akademii Nauk SSSR (in Russian). 232: 170–173.
^Gurov E.P., Gurova E.P. (1995). "Impact melt composition of the Obolon crater: chlorine as a possible indicator of the submarine crater formation". Meteoritics, v. 30, p 515. Abstract
^Spray, J.G., Kelley, S.P. and Rowley, D.B. (1998). "Evidence for a late Triassic multiple impact event on Earth". Nature, v. 392, pp. 171–173. Abstract