Tvären

Tvären
Tvären Bay, Sweden, with Tvären impact structure indicated
Impact crater/structure
ConfidenceConfirmed
Diameter2 kilometres (1.2 mi)
Age455 Ma
Location
CountrySweden
MunicipalityStudsvik

Tvären is a circular bay close to Studsvik, Sweden.

Within the bay is an ancient buried impact crater about 2 kilometres (1.2 mi) in diameter. It was first identified using reflection seismology. The crater is estimated to be about 455 million years old (Late Ordovician).

Asteroid 7771 Tvären is named after the bay.

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