Zhamanshin crater
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.<ref>Template:Cite Earth Impact DB</ref>
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.<ref>Essay "Impact Cratering on Earth", based on: R.A.F. Grieve, 1990, Impact cratering on the Earth, Scientific American, v. 262, 66-73.</ref>
Preliminary papers in the late 1970s suggested either Elgygytgyn<ref>R.S. Dietz (1977), Elgygytgyn Crater, Siberia: Probable Source Of Australasian Tektite Field Meteoritics, June 1977, Vol 12, Issue 2, p. 145–157</ref> or Zhamanshin<ref>B.P. Glass (1979), Zhamanshin crater, a possible source of Australasian tektites? Geology, July 1979, v. 7, p. 351-353</ref> as the source of the Australasian strewnfield.
