Dikes and the sub-volcanic plumbing system in the Oslo Rift
The sedimentary rocks, the plutons, and the volcanic rocks in the Oslo Rift are intruded by numerous dikes. The dikes are present in large numbers in most areas in the rift, and likely fed som of the present day outcropping flood basalt.
However, the role of the dikes as feeders, have never been investigated in detail. For instance, the dikes may have fed lavas not longer outcropping, and may thus provide important information about the long term evolution of the rift.
We offer a master project that involves detailed mapping and fieldwork in 2-3 selected areas across the rift.
Methods will include detailed field investigations and builing of 3D outcrop models, major and trace element geochemistry, and petrographic studied using electron microscope.