Structural succession in a part of the outer Hardangerfjord area, West Norway.

Abstract

Recent mapping has made possible a reinterpretation of the tectonostratigraphy of this area, situated at the eastern edge of the \"Faltungsgraben\". It is shown that certain rock units occuring over large areas, and formerly thought to be autochthonous, are made up of various allochthonous units. The possible relations of these to the succession of the Hardangervidda-Ryfylke area are discussed. Compared to the east, allochthonous crystalline gneisses seem to wedge out to the west. In this area, the highest thrust sheet, the volcanic-bearing Cambro-Silurian of the western facies appears as a new element, and its allochthonous character is discussed.