Logoisk crater

Logoisk crater^[a] or Logoisk astrobleme is a meteorite impact crater in Belarus near the city of Lahoysk.

Logoisk crater
Logoisk crater Location of the crater in Belarus
Impact crater/structure
Confidence	Confirmed
Diameter	15 kilometres (9 mi)
Age	Middle Eocene 42.3 ± 1.1 Ma
Exposed	No
Drilled	Yes
Location
Coordinates	54°12′N 27°48′E
Country	Belarus
Municipality	Lahojsk

A suevite from the impact crater at Lahojsk, Belarus

It is 15 kilometers (9.3 mi) in diameter and is estimated to be 42.3 ± 1.1 million years old (Eocene). The crater is not exposed at the surface.^[1]

The crater was discovered by an accident during a routine exploration drilling near the village of Kuzevichi [ru] in 1970s. A section was discovered with atypical materials in an unusual sequence: Quaternary deposits up to depth of 160m followed by a 230 meter thick layer of layered clays and lacustrine sediments followed by 240 meters of breccias, rocks previously unseen in the geology of Belarus. Three more drills made in 1976-1977 provided a clear evidence of the meteorite origin of the anomaly. Subsequent drillings mapped the crater.^[2] During the period of intensive research it was suggested that the crater may contain diamonds formed due high temperature and pressure of the impact, but there has been no confirmation.^[3]

Notes

1. also Logoysk crater, Logoysk astrobleme, Logoisk impact structure, etc.