Nain Plutonic Suite

Proterozoic Anorthosite - Origins of Proterozoic Anorthosites
... in the late 1970s, of anorthositic dykes in the Nain Plutonic Suite, suggested that the possibility of anorthositic magmas existing at crustal temperatures needed to be reexamined ... isotopic measurements made on anorthositic rocks in the Nain Plutonic Suite ... Instead, the magma that gave rise to the Nain Plutonic Suite anorthosites must have had a significant crustal component ...