| Tvären | |
|---|---|
 Tvären Bay, Sweden, with Tvären impact structure indicated | |
| Impact crater/structure | |
| Confidence | Confirmed |
| Diameter | 2 kilometres (1.2 mi) |
| Age | 455 Ma |
| Location | |
| Country | Sweden |
| Municipality | Studsvik |
  | |
Tvären is a circular bay close toStudsvik, Sweden.
Within the bay is an ancient buriedimpact crater about 2 kilometres (1.2 mi) in diameter. It was first identified usingreflection seismology. The crater is estimated to be about 455 million years old (Late Ordovician).[1][2]
Asteroid7771 Tvären is named after the bay.
58°46′N17°25′E / 58.767°N 17.417°E /58.767; 17.417
 | This article about a location inSödermanland County, Sweden is astub. You can help Wikipedia byadding missing information. |
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