Yttre_Ursholmen_Kontakt_Kosterdiabas_i_Nebulitisk-migmatitisk_sedimentgnejs.jpg

Description
English: Contact between a dark-coloured tholeiitic dolerite dyke (about 1100 million years old) and light-coloured nebulitic migmatitic paragneiss (1800 million years old, Stora Le Marstrand Formation) in Kosterhavet National Park on Yttre Ursholmen island in the Koster Islands off the southwestern coast of Sweden. The rock association seen in the photograph belongs to the undeformed southernmost part of the Kattsund-Koster dyke swarm of the Kongsberg-Bamble-Østfold segment of the Sveconorvegian Province of the Baltic Shield. [1]
Deutsch: Kontakt eines tholeiitischen Doleritganges (dunkel, etwa 1,1 Milliarden Jahre alt) mit migmatitischem Paragneis (hell, 1,8 Milliarden Jahre alt) der Stora-Le-Marstrand-Formation. Die abgebildete Gesteinsassoziation gehört regionalgeologisch zum undeformierten südlichsten Teil der Kattsund-Koster-Gangschar des Kongsberg-Bamble-Østfold-Segments der Svekonorvegiden des Baltischen Schildes [1] und befindet sich im Kosterhavet-Nationalpark auf der Insel Yttre Ursholmen (Koster-Inseln) vor der Südwestküste Schwedens.
  1. ↑ a b Bjørn Hageskov (1985): Constrictional deformation of the Koster dyke swarm in a ductile sinistral shear zone, Koster islands, SW Sweden. Bulletin of the Geological Society of Denmark 34(3-4):151-197 ( PDF 4.2 MB)
Date
Source Flickr : Yttre Ursholmen Kontakt Kosterdiabas i Nebulitisk-migmatitisk sedimentgnejs
Author Thomas Eliasson of Geological Survey of Sweden SGU
Permission
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Camera location 58° 53′ 42.89″ N, 10° 59′ 00.27″ E Kartographer map based on OpenStreetMap. View this and other nearby images on: OpenStreetMap info

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inception

23 August 2008

coordinates of the point of view

58°53'42.886"N, 10°59'0.272"E

exposure time

0.00291205591147350029 second

focal length

6.3 millimetre

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image/jpeg