Chukcha
Coordinates: 75 ° 42 ′ 0 ″ N , 97 ° 51 ′ 0 ″ E
Tschuktscha ( Russian Чукча ; also Чукчинский кратер / Tschuktschinski krater ) is an impact crater in the northwestern part of the Taimyr Peninsula in northern Siberia , Russia .
The crater visible on the surface of the earth has a diameter of six kilometers and a depth of about 200 meters (sea level of the crater interior about 50 m, the crater rim about 250 m ). The inside of the crater wall has an incline of six to nine degrees. A central mountain about 30 meters high and a kilometer in diameter rises above the level crater floor .
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 layers of the Neoproterozoic to the Lower Ordovician , which are broken through by Neoproterozoic and Upper Paleozoic gabbro and granite intrusions . The interior of the crater is filled with up to 100 meters thick sediments of the Upper Neogene . In contrast to the central mountain, no impact-related changes can be detected on the rocks of the crater wall - the structure was probably deeply eroded during the Cenozoic era .
The crater was after flowing through him Chukcha crater named, a left tributary of the Lower Taymyr River .
Web links
- Earth Impact Database
- Chukcha on the website of the Siberian Center for Global Disasters of the Siberian Section of the Russian Academy of Sciences , Novosibirsk (Russian)