Kara crater

Summary

Kara crater
Kara crateri crater Russia lansat 7 image.gif
Kara crater
Impact crater/structure
ConfidenceConfirmed
Diameter65 km (40 mi)
Age70.3 ± 2.2
Late Cretaceous
ExposedNo
DrilledYes
Bolide typeChondrite
Location
LocationTiman-Pechora Basin
Coordinates69°6′0″N 64°9′0″E / 69.10000°N 64.15000°E / 69.10000; 64.15000Coordinates: 69°6′0″N 64°9′0″E / 69.10000°N 64.15000°E / 69.10000; 64.15000
CountryRussia
StateNenetsia
Kara crater is located in Nenets Autonomous Okrug
Kara crater
Location of the crater in Russia
Kara crater is located in European Russia
Kara crater
Kara crater (European Russia)

Kara is a meteor crater in the Yugorsky Peninsula, Nenetsia, Russia.[1]

Heavily eroded, it is presently 65 kilometres (40 mi) in diameter, though it is thought to be originally 120 kilometres (75 mi) before erosion. Its age is estimated to be 70.3 ± 2.2 million years old (Late Cretaceous). Impactite outcrops located on the Baydarata Gulf (Baydaratskaya) shore north-east of the crater imply that the original size of the crater could have been the 4th largest on Earth.[2] The crater is not exposed at the surface.

The Kara crater lies in the southeastern end of the Yugorsky Peninsula, while the Ust-Kara site lies offshore, 15 kilometres (9.3 mi) east of the small Kara or Karskaya Guba inlet. It was formerly believed that these two sites were two separate craters and that they formed a twin impact structure from the Late Cretaceous. However, it seems that the Ust-Kara site does not exist as a separate site. Apparently, the suevite outcrops of the Ust-Kara impact structure are only a part of the Kara impact structure.[3]

References

  1. ^ "Kara". Earth Impact Database. Planetary and Space Science Centre University of New Brunswick Fredericton. Retrieved 2017-10-09.
  2. ^ Raitala; et al. (2003). "Kara crater by remote sensing" (PDF). Retrieved 2017-10-09.
  3. ^ NASA 1988, Hodge 1994

External links

  • Earth Impact Database
  • The Kara Crater Size: Suevite layer outside the crater depression