Phosphorus and Potassium Metasomatic Enrichment in the Mantle Source of the c. 1450-1425 Ma Michael-Shabogamo Gabbro of Eastern Laurentia
A c. 1450 Ma, east-west-oriented suite of Proterozoic mafic intrusions in eastern Canada, located between Labrador City and coastal Labrador near Rigolet, has been divided into two groups: the Shabogamo Gabbro, which is exposed west of Churchill Falls, and the Michael Gabbro, which crops out east of Churchill Falls. Both suites of gabbro are within-plate tholeiites that range from sub-alkaline bas
