Chukcha crater

75.797.85Koordinaten: 75 ° 42 '0 "N, 97 ° 51' 0" E

Tschuktscha (Russian Чукча, also Чукчинский кратер / Tschuktschinski crater ) is a crater in the northwestern part of the Taymyr Peninsula in northern Siberia, Russia.

The visible at the surface crater has a diameter of six kilometers and a depth of about 200 meters (sea level inside the crater about 50 m, the crater rim approximately 250 m). The inside walls of the craters has an angle of between six and nine degrees. About the flat crater floor, a 30 -meter-high central mountain one kilometer in diameter rises.

The age of the crater is estimated to be less than 70 million years ( Late Cretaceous to early Paleogene ). The surrounding rocks represent folded sedimentary strata of the Neoproterozoic to lower Ordovician, which are pierced by Neoproterozoic and oberpaläozoischen gabbro and granite intrusions. The interior of the crater is filled with up to 100 meters in thickness sediments of the upper Neogene. On the rocks of the crater walls no weft -related changes are in contrast to the central mountain brakes - probably the structure during the Cenozoic is deeply eroded.

The crater was named after flowing through it Tschuktscha, a left tributary of the Lower Taimyra.