NJG61-1-08
1981
Interpretation of Rb-Sr dates from the Western Gneiss Region: a cautionary note
61
1
83-86

Some Precambrian Rb-Sr whole-rock isochrons from the Western Gneiss Region have been interpreted as recording the age of the metamorphism, and some recent geologic models have in turn considered the Caledonian influence in the region to be relatively minor. However, data from the basement rocks of the
Alps clearly show that Rb-Sr whole-rock isochrons survived intense Alpine metamorphism and deformation. Thus, the Precambrian dates from western Norway may record meaningful ages of the Precambrian basement, even though the effects of the Caledonian orogenesis may have been considerable.

0029-196X
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