Blar i NGU Open Archive på forfatter "Fossen, Haakon"
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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. ...