Puchezh-Katunki crater

Summary

Puchezh-Katunki crater
Puchezh-Katunki crater Russia lansat 7 image.jpg
Landsat image of Puchezh-Katunki crater
Impact crater/structure
ConfidenceConfirmed
Diameter40 km (25 mi) (rim-to-rim)
80 km (50 mi) (including ring terrace)
Age192-196 Ma
Early Jurassic
ExposedNo
DrilledYes
Location
Coordinates56°58′N 43°43′E / 56.967°N 43.717°E / 56.967; 43.717Coordinates: 56°58′N 43°43′E / 56.967°N 43.717°E / 56.967; 43.717
CountryRussia
ProvinceNizhny Novgorod Oblast
Puchezh-Katunki crater is located in Russia
Puchezh-Katunki crater
Location of the crater in Russia
Puchezh-Katunki crater is located in Nizhny Novgorod Oblast
Puchezh-Katunki crater
Puchezh-Katunki crater (Nizhny Novgorod Oblast)

Puchezh-Katunki is a meteor crater located in the Nizhny Novgorod Oblast of the Volga Federal District, Russia. It is 80 km (50 mi) in diameter. Argon–argon dating has constrained the age of formation to be between 192-196 million years old, placing it within the Sinemurian stage of the Early Jurassic.[1] The crater is not exposed to the surface, but appears as variation in the vegetation. The Earth Impact Database lists a rim-to-rim diameter of 40 kilometres (25 mi). [2]

Description

Shock stationed clay mineral (Speel) Puchezh-Katunsky meteorite crater in the Moscow museum of astronautics.

The central dome, ring depression, and ring terrace of the 80 km (50 mi) wide impact structure are nearly completely buried under Neogene and Quaternary sediments, with the only exposed impactites found on the banks of the Volga River. [3]

One of the six largest known Phanerozoic impact craters, the Puchezh-Katunki crater is the only one not considered as a factor in a biotic extinction event. There is no known significant extinction in the Middle Jurassic, but there are clues suggesting the impact may have occurred coeval with the end-Triassic or Early Jurassic extinction.[3]

See also

References

  1. ^ Holm‐Alwmark, S.; Alwmark, C.; Ferrière, L.; Lindström, S.; Meier, M. M. M.; Scherstén, A.; Herrmann, M.; Masaitis, V. L.; Mashchak, M. S.; Naumov, M. V.; Jourdan, F. (August 2019). "An Early Jurassic age for the Puchezh‐Katunki impact structure (Russia) based on 40 Ar/ 39 Ar data and palynology". Meteoritics & Planetary Science. 54 (8): 1764–1780. doi:10.1111/maps.13309. ISSN 1086-9379.
  2. ^ "Puchezh-Katunki". Earth Impact Database. Planetary and Space Science Centre University of New Brunswick Fredericton.
  3. ^ a b Pálfy, József (2004). "Did the Puchezh-Katunki Impact Trigger an Extinction?". Hungarian Natural History Museum.