Kamensk crater

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Kamensk crater
Kamensk crater Russia lansat 7 image.jpg
Landsat image of Kamensk crater
Impact crater/structure
ConfidenceConfirmed
Diameter25 km (16 mi)
Age49.0 ± 0.2 Ma
Eocene
ExposedNo
DrilledYes
Location
Coordinates48°21′N 40°30′E / 48.350°N 40.500°E / 48.350; 40.500Coordinates: 48°21′N 40°30′E / 48.350°N 40.500°E / 48.350; 40.500
Country Russia
StateRostov
MunicipalityKamensk-Shakhtinsky
Kamensk crater is located in Russia
Kamensk crater
Location of the crater in Russia

Kamensk crater is an impact crater located 10 to 15 kilometres (6.2 to 9.3 mi) to the south of Kamensk-Shakhtinsky town in Rostov Oblast, Russia. It is 25 km (16 mi) in diameter and the age is estimated to be 49.0 ± 0.2 million years old (Eocene). The crater is not exposed at the surface.[1] It may have formed at the same time as the smaller and nearby Gusev crater.

Description[edit]

Six laser total-fusion analyses of the Kamensk impact glass have a weighted-mean age of 49.2 ± 0.1 Ma relative to sanidine from the Taylor Creek Rhyolite of New Mexico, that has an age of 27.92 Ma relative to a K-Ar age of 162.9 ± 0 Ma for a primary fluence-monitor standard SB-3 biotite or of 513.9 Ma for an international hornblende standard MMhb-1. This isotopic age of the Kamensk glass recalculated using a reference age for MMhb-1 of 520.4 Ma is 49.9 ± 0.1 Ma.[2]

References[edit]

  1. ^ "Kamensk". Earth Impact Database. University of New Brunswick. Retrieved 2017-10-09.
  2. ^ Izett et al., 1994, LPI Contribution No. 825, p. 55-56