U-Pb baddeleyite age for the Ottfjället Dyke Swarm, central Scandinavian Caledonides : new constraints on Ediacaran opening of the Iapetus Ocean and glaciations on Baltica
The Ottfjället Dyke Swarm (ODS) is a prominent component of the Ediacaran mafic magmatism associated with opening of the Iapetus ocean, and hosted in the Särv Nappe, Middle Allochthon of the Scandinavian Caledonides. A U-Pb baddeleyite age of 596.3 ± 1.5 Ma for a thick, well preserved, plagioclase-phyric dolerite dyke in Härjedalen, Sweden, dates emplacement of the swarm. The age represents a robu
