Kara crater
Encyclopedia
Kara is a meteor
crater
in the Yugorsky Peninsula
, Nenetsia, Russia.
It is 65 km in diameter and the age is estimated to be 70.3 ± 2.2 million years old (Upper Cretaceous). Impactite
outcrops located on the Baydarata Gulf
shore north-east of the crater imply that the original size of the crater, now greatly eroded, was 120 km in diameter http://www.lpi.usra.edu/meetings/lpsc2003/pdf/1057.pdf. The crater is not exposed to the surface.
The Kara crater lies in the southeastern end of the Yugorsky Peninsula, while the Ust-Kara site lies offshore, 15 km 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 a large-scale meteorite hit in 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. (Hodge 1994 and NASA 1988)
METEOR
METEOR is a metric for the evaluation of machine translation output. The metric is based on the harmonic mean of unigram precision and recall, with recall weighted higher than precision...
crater
Impact crater
In the broadest sense, the term impact crater can be applied to any depression, natural or manmade, resulting from the high velocity impact of a projectile with a larger body...
in the Yugorsky Peninsula
Yugorsky Peninsula
The Yugorsky Peninsula is a large peninsula in Nenets Autonomous Okrug, Russia. It is limited by the Khaypudyr Bay in the Pechora Sea to the west and by the Baydaratsk Bay in the Kara Sea to the north and east.Latitude : 68° 40' Longitude : 62° 15'...
, Nenetsia, Russia.
It is 65 km in diameter and the age is estimated to be 70.3 ± 2.2 million years old (Upper Cretaceous). Impactite
Impactite
Impactite is an informal term describing a rock created or modified by the impact of a meteorite. The term encompasses shock-metamorphosed target rocks, melts and mixtures of the two, as well as sedimentary rocks with significant impact-derived components .-Some localities:*Nördlinger Ries...
outcrops located on the Baydarata Gulf
Baydaratskaya Bay
Baydaratskaya Bay is a gulf in Russia, located in the southern part of the Kara Sea between the coastline of the Northern termination of the Ural Mountains and Yamal Peninsula. The length of the gulf is approx. 180 km, mouth width - 78 km, depth - up to 20 m. Surface water temperature...
shore north-east of the crater imply that the original size of the crater, now greatly eroded, was 120 km in diameter http://www.lpi.usra.edu/meetings/lpsc2003/pdf/1057.pdf. The crater is not exposed to the surface.
The Kara crater lies in the southeastern end of the Yugorsky Peninsula, while the Ust-Kara site lies offshore, 15 km 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 a large-scale meteorite hit in the late Cretaceous
Cretaceous
The Cretaceous , derived from the Latin "creta" , usually abbreviated K for its German translation Kreide , is a geologic period and system from circa to million years ago. In the geologic timescale, the Cretaceous follows the Jurassic period and is followed by the Paleogene period of the...
. However, it seems that the Ust-Kara site does not exist as a separate site. Apparently, the Suevite
Suevite
Suevite is a rock consisting partly of melted material, typically forming a breccia containing glass and crystal or lithic fragments, formed during an impact event...
outcrops of the Ust-Kara impact structure are only a part of the Kara impact structure. (Hodge 1994 and NASA 1988)