Overview
Boltysh Crater is located in central Ukraine, in the basin of the Tiasmyn River, a tributary of the Dnieper River. It is 24 kilometres (15 mi) in diameter, and is surrounded by an ejecta blanket of breccia preserved over an area of 6,500 square kilometres (2,500 sq mi). It is estimated that immediately after the impact, ejecta covered an area of 25,000 square kilometres (9,700 sq mi) to a depth of 1 metre (3.3 ft) or greater, and was some 600 metres (2,000 ft) deep at the crater rim.
The crater contains a central uplift about 6 kilometres (3.7 mi) in diameter, rising about 550 metres (1,800 ft) above the base level of the crater. This uplift currently lies beneath about 500 metres (1,600 ft) of sediment deposited since the impact, and was discovered in the 1960s during oil shale deposits exploration.
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