Dellen

Dellen is a lake system in the province of Hälsingland, Sweden. It consists of two lakes, Northern Dellen and Southern Dellen, appreciated among fly-fishermen for their population of brown trout.

Dellen
View of lake
Location of Dellen lake
Location of Dellen lake
Dellen
Location of Dellen lake
Location of Dellen lake
Dellen
Map showing location of the lakes within the area
Map of the area
LocationHälsingland
Coordinates61°51′N 16°42′E
Basin countriesSweden
Surface area52 km2 (20 sq mi) (Southern Dellen),
82 km2 (32 sq mi) (Northern Dellen)
Water volume1,226 million cubic metres (994,000 acre⋅ft) (Southern),
1,489 million cubic metres (1,207,000 acre⋅ft) (Northern)
Surface elevation42 m (138 ft)

Southern Dellen has a surface area of 52 km2 and a water volume of 1,226 million m³. Northern Dellen has an area of 82 km2 and a water volume of 1,489 million m³.

The two lakes are only separated by a short channel, and it is therefore disputed whether they should be counted as one or two lakes. The two lakes together have a total area of 130 km2, which would be the 18th largest Swedish lake.

The vaguely circular lake system was formed by an impact crater 89 million years ago, placing the impact in the Late Cretaceous. The resulting impact crater measures about 19 kilometers in diameter. It has resulted in the area containing the rock Dellenite (a rock intermediate in composition between Rhyolite and Dacite),[1] which has become the provincial rock.[2]

Asteroid 7704 Dellen was named after it.

An installation of the Sweden Solar System representing Pluto and Charon lies near the southern lake; the pillars holding the model objects are made of dellenite.

References
  1. Le Maître, R.W. (2002). Igneous rocks: a classification and glossary of terms : recommendations of the International Union of Geological Sciences, Subcommission on the Systematics of Igneous Rocks (2 ed.). Cambridge University Press. p. 72. ISBN 978-0-521-66215-4. Retrieved 27 October 2010.
  2. "Dellen". Earth Impact Database. Planetary and Space Science Centre University of New Brunswick Fredericton. Retrieved 2016-02-28.
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