The first part of this study indicates that the serpentinite complex at Randhammeren, Røros, is a rather thin lens-like body. An extensive residual gravity anomaly (about 10 mgal, approximately 15 km wide) covers a greater area than the outcropping serpentinite complex. A possible explanation for this is an undulating basement topography beneath the Cambro-Silurian rock sequence in the area. This postulated undulation is in agreement with geologic observations on the granitic basement where it is exposed in several windows.
Gravimetric indications of basement undulations below the Cambro-Silurian deposits of Røros, southern Norway