Särna alkaline complex

The Särna alkaline complex is a group of intrusive igneous rocks in Dalarna, Sweden. Emplacement and cooling of magma into rock occurred during the Carboniferous Period. The complex is aligned with the Oslo Rift, which formed around the same time; it is thought that they are related.^[1]

References

^ Bylund, G.; Patchett, P.J. (1977), Palaeomagnetic and Rb-Sr isotopic evidence for the age of the Särna alkaline complex, western central Sweden, vol. 10, Lithos, pp. 73–79

Geology of Fennoscandia

Paleosurfaces

Borsu surface
Hardangervidda
Muddus plains
Paleic surface
Ostrobothnian Plain
South Småland peneplain
300 m peneplain
200 m peneplain
Strandflat
Sub-Cambrian peneplain
Sub-Mesozoic hilly relief

Sedimentary cover

Moraines	Billingen terminal moraine Pulju moraine Rogen moraine Salpausselkä Sevetti moraine Skövde terminal moraine Trollgarden Veiki moraine
Sedimentary rock	Alum Shale Formation Hedmark Group Jotnian sedimentary rock Reusch's Moraine Visingsö Group

Structures

Faults and shear zones	Burträsk Fault Iapetus Suture Lainio Fault Nordfjord-Sogn Detachment Pärvie Fault Protogine Zone Röjnoret Fault Sorgenfrei-Tornquist Zone South Finland Shear Zone
Large impact craters	Dellen Gardnos crater Granby crater Hummeln structure Lappajärvi Lockne crater Lumparn Mien Ritland crater Siljan Ring Sääksjärvi Söderfjärden Suvasvesi Tvären
Morphostrucures	Central Swedish lowland Gulf of Bothnia rift Lake Inari graben Lake Ladoga graben Lofoten horst Muhos Graben Norrland terrain Omberg horst Oslo Graben Scandinavian Mountains Scanian horsts South Swedish Dome Vättern graben White Sea Rift System