• Age of the Krossnes Granite, West Norway 

      Fossen, Haakon; Austrheim, Haakon (NGU Bulletin (413), Journal article, 1988)
      Rb-Sr isotope whole-rock dating of the Krossnes Granite has yielded an isochron age of 430 \u00B1 6 Ma with I.R. = 0.07066 \u00B1 0.0005, interpreted as the age of intrusion. This age is close to that of the Håkre Granite ...
    • Geology of the Minor Bergen Arc, West Norway. 

      Fossen, Haakon (NGU Bulletin (416), Journal article, 1989)
      Detailed mapping of the Minor Bergen Arc has revealed the presence of a variety of highly deformed rocks of different origin and age. Three rock units have been separated and named. The Nordåsvatn Complex comprises deformed ...
    • Rb-Sr age of the Blåfjellhatten granite in the Olden Window, Central Norway. 

      Fossen, Haakon; Nissen, August L. (NGU Bulletin (420), Journal article, 1990)
      Rb-Sr isotope whole-rock dating of undeformed and unaltered parts of the Blåfjellhatten granite has yielded an isochron age of 1356 +- 29 Ma with I.R.=0.7254 +-0.0027, interpreted as the age of intrusion. This age contrasts ...
    • Structural evolution of the Bergsdalen Nappes, Southwest Norway 

      Fossen, Haakon (NGU Bulletin (424), Journal article, 1993)
      The Bergsdalen nappes are Caledonian thrust sheets which experienced perva- sive, although heterogeneous ductile deformation during the upper green- schist to lowermost amphibolite-facies, Caledonian, thrusting history. ...