Borsu surface

The Borsu surface (Swedish: Borsuytan) is an erosion surface found as valley benches in the northern Scandinavian Mountains. The surface was first identified by Walter Wråk who published his findings in Ymer in 1908.[1]

References

Lidmar-Bergströrm, Karna (1996). "Long term morphotectonic evolution in Sweden". Geomorphology. Elsevier. 16: 33–59.

Geology of Fennoscandia

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

Faults and shear zones	Burträsk Fault Iapetus Suture Lainio Fault Nordfjord-Sogn Detachment Pärvie Fault Protogine Zone 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

Lesser igneous provinces

Provinces and orogens

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