Solitary mantle peridotite bodies in Stølsheimen, Central South Norway.
CEED Masters Student
The peridotite bodies in Stølsheimen are located in the mélange unit
which consist of metapelites. The peridotite bearing mélange unit is
situated between the upper and lower Bergdals nappe in Stølsheimen
Recent work suggest that such solitary "Alpine-type" peridotites may be
occasionally exhumed to the surface during extreme extension of the
crust in passive continental margins.
Two peridotite bodies (Raudberget and Vetle Raudberget) have been mapped
in detail and geochemical analyses have been carried out. The data from
the two peridotite bodies have been compared with data from similar
rocks from other parts of the Caledonides and other orogenic belts.