Tvären
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Tvären | |
---|---|
File:Tvären Bay LC08 L1TP 192019 20230119 20230131 02 T1.jpg | |
Impact crater/structure | |
Confidence | Confirmed |
Diameter | 2 kilometres (1.2 mi) |
Age | 455 Ma |
Location | |
Country | Sweden |
Municipality | Studsvik |
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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).[1][2] Asteroid 7771 Tvären is named after the bay.
References
- ↑ "Tvären". Earth Impact Database. Planetary and Space Science Centre University of New Brunswick Fredericton. Retrieved 2009-08-20.
- ↑ Flodén, Tom; Tunander, Pål; Wickman, Frans E. (1986). "The Tvären Bay structure, an astrobleme in southeastern Sweden". Geologiska Föreningen i Stockholm Förhandlingar. 108 (3): 225–234. doi:10.1080/11035898609454687.