NJG51-3-07
1971
Gravity studies of the larvikite massif SW of the lake Gjerdingen, Nordmarka
51
3
317-321

A gravity study of the larvikite massif SW of the lake Gjerdingen in Nordmarka shows that the disturbing body giving rise to a positive gravity anomaly of ca. 4 mgals, is only 900 m thick. This indicates that the massif is of a sheet or laccolithic type, or that the surrounding nordmarkite has a thin, sheet-like nature. A connection between the Gjerdingen massif and the larvikite- kjelsåsite massifs at the lake Katnosa is possible.

0029-196X
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