[en] The area the size of which is 500 km2, is situated in the district of Gaevleborg. The rock consists mainly of migmatic and gneissic granite. Greenstone and diabase are accessory constituents. The fracture zones are oriented in the direction NNW-SSE. Svartboberget is in the central part of a downfolded migmatite and forms a part of a rock which is poorly fractured. The water flow in the minor fracture zones is low and the small tension fractures are dominant in the NNE-SSW direction. Geophysical estimates give the thickness of migmatite to 500 m. (G.B.)
Original Title
Berggrundsgeologiska, tektoniska och geofysiska studier av Voxnaomraadet och det daeri belaegna typomraadet Svartboberget