* Astronomy

Blobrana · L

RE: Siljan Ring

Blobrana · L

Panoramic of the Siljan Crater (Impact Structure)

Siljan Ring, a circular ring of lakes that traces the remnants of an eroded impact crater, 55 km in diameter and 377 million years old (Devonian). The largest of the lakes is Lake Siljan. This crater is one of the largest impact crater known in Europe.

Known Impact Craters that span F-F Boundary (367 Ma) 

Siljan, Sweden 52km 368 ± 1 
Charlevoix, Quebec 46km 360 ± 25 
Kaluga, USSR 15km 380 ± 10 
Lac La Moinerie, Quebec 8km 400 ± 50 
Crooked Creek, MO 5.6km 360 ± 80 
Flynn Creek, TN 3.8km 360 ± 20

Latitude: 61° 2' N, Longitude: 14° 52' E

Blobrana · L

Siljan, in Dalarna in central Sweden, is Sweden's sixth largest lake. The cumulative area of Siljan and the adjacent, smaller lakes Orsasjön and Insjön is 354 km². Siljan reaches a maximum depth of 120 m, and its surface is situated 161 metres above sea level. The largest city bordered by its shore is Mora.
The lake is located around the southwestern perimeter of the Siljansringen (Siljan Ring), a circular geological formation which was formed 377 million years ago in the Devonian by a major meteorite impact.

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