Zhamanshin crater explained

Zhamanshin crater
Other Name:Jaman şıñ
Map:Kazakhstan
Coordinates:48.4°N 118°W
Confidence:Confirmed
Diameter:14km (09miles)
Age:900,000 ± 100,000 years
Mid Pleistocene
Exposed:Yes
Drilled:Yes
Bolide:Chondrite
Country:Kazakhstan
State:Aktobe Region

Zhamanshin (Жаман шың|Jaman shun) is a meteorite crater in Kazakhstan. It is 14km (09miles) in diameter and the age is estimated to be 900,000 ± 100,000 years (Pleistocene). The crater is exposed at the surface.[1]

Description

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 a nuclear winter, but it was not sufficiently large enough to have caused a mass extinction.[2]

Preliminary papers in the late 1970s suggested either Elgygytgyn,[3] or Zhamanshin,[4] as the source of the Australasian strewnfield.

Notes and References

  1. Zhamanshin . 2017-10-09.
  2. https://www.unb.ca/passc/ImpactDatabase/essay.html Essay "Impact Cratering on Earth"
  3. R.S. Dietz (1977), Elgygytgyn Crater, Siberia: Probable Source Of Australasian Tektite Field Meteoritics, June 1977, Vol 12, Issue 2, p. 145–157
  4. B.P. Glass (1979), Zhamanshin crater, a possible source of Australasian tektites? Geology, July 1979, v. 7, p. 351-353