Zhamanshin meteorite crater
By kjfitz @ 2010-11-22 14:41:29
Zhamanshin is a meteorite crater in Kazakhstan.
It is 14 km in diameter and the age is estimated to be 900,000 ± 100,000 years (Pleistocene). The crater is exposed at the surface.
It is believed that the Zhamanshin crater is the site of the most recent meteorite impact event of the magnitude that could have produced a disruption comparable to that of nuclear winter, but it was not sufficiently large to have caused a mass extinction.