NJG56-3-06
1976
A Rb-Sr isochron age of meta-andesites from Skorpehei, Suldal, south Norway
56
3
315-319

The Precambrian basement in the Suldal area is overlain by a succession of mainly metamorphic pelitic rocks (the Schist Unit) and gneisses (the Gneiss Unit). The rocks in the Schist Unit were generally considered to be autochthonous or parautochthonous and of Cambro-Ordovician age, while the gneisses were thought to be allochthonous and of Precambrian age. A new Rb-Sr whole-rock isochron date of 1145 million years of metaandesites from the Schist Unit indicates that the Schist Unit is allochthonous and of Precambrian age. 

0029-196X
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