The low-grade rocks of the Skålvær area, S. Helgeland, and their relationship to high-grade rocks of the Helgeland Nappe Complex.

Abstract

The geological setting of low-grade rocks of the Helgeland Nappe Complex are discussed and it is concluded that the low-grade rocks are part of the nappe complex. Correlation with similar low-grade sequences in (1) the Leka area on the coast some 90 km to the south, (2) part of the western Trondheim Region, and (3) the K\u00CEli part of the Seve-K\u00CEli Nappe Complex of V\u00CCsterbotten, Sweden, are suggested. These correlations enable a better evaluation of the stratigraphical positions of parts of the high-grade sequences in Southern Helgeland than has hitherto been possible. Another conclusion which can be drawn is that there is no great difference between the eugeocyclinal deposits of the Nordland facies type and the Trondheim Region facies type.