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Encyclopedia > Popigai crater
Popigai crater
Popigai crater

The Popigai crater in Siberia, Russia is tied with Manicouagan Reservoir as the 4th largest impact crater on Earth. A large bolide impact created the crater, 100 km in diameter, about 35 million years ago during the late Eocene epoch. Image File history File links Popigai_crater_russia. ... Image File history File links Popigai_crater_russia. ... Siberia is also an album by Echo & The Bunnymen. ... Lake Manicouagan as seen from Earth orbit. ... Tycho crater on Earths moon. ... Earth is the current Good Article Collaboration of the week! Please help to improve this article to the highest of standards. ... The term bolide (from the Greek βολις, bolis, missile) can refer to either an extraterrestrial body that collides with the Earth, or to an exceptionally bright, fireball-like meteor regardless of whether it ultimately impacts the surface. ... One million (1000000), one thousand thousand, is the natural number following 999999 and preceding 1000001. ... A year is the time between two recurrences of an event related to the orbit of the Earth around the Sun. ... The Eocene epoch (56-34 Ma) is a major division of the geologic timescale and the second epoch of the Palaeogene period in the Cenozoic era. ...

The Popigai impact crater was possibly simultaneous with the Chesapeake Bay and Toms Canyon impacts, but evidence varies.

The impactor in this event has been identified as either an eight-kilometer diameter chrondrite asteroid, or a five-kilometer diameter stony asteroid.

The shock pressures from the impact instantaneously transformed graphite in the ground into diamonds within a 13.6 kilometer radius of ground zero. No exact count nor measure of caratage has been made available, but it is estimated that this one impact formed more diamonds than have been formed by the Earth's own processes.

Popigai is the best example yet of the formation of a crater of this type. Three other craters are larger, but they are either buried [Chicxulub], strongly deformed [Sudbury], or deformed and severely eroded [Vredefort].

External links

  • Earth Impact Database

  Results from FactBites:
Popigai (2743 words)
Masaitis, V.L. Mashchak, M.S., Raikhlin, A.I., Selivanovskaya, T.V., and Danilin, A. 1978 Meteorite craters and astroblemes in the USSR (in Russian).
Masaitis, V.L. 1992 Impactites from Popigai crater (abstract).
Mashchak, M.S. Selivanovskaya, T.V. 1991 Breccia and impactites of the southeastern rim of the Popigai astrobleme (abstract).
  More results at FactBites »



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