Fossen, HDunlap, William James2015-12-070029-196Xhttp://hdl.handle.net/1885/23051The Ulven Syncline in the Bergen Arcs contains some of the youngest rocks involved in Caledonian orogenic deformation in West Norway. The pelitic Vaktdal Formation contains a Middle Llandovery (439-436 Ma) fauna, providing a maximum age of deposition andKeywords: argon-argon dating; biotite; Caledonian orogeny; deformation; deposition; Devonian; lamprophyre; Llandoverian; metamorphic rock; muscovite; Silurian; Bergen Arcs; Caledonides; Eurasia; Europe; Northern Europe; Norway; Scandinavia20062015-12-07