Tectonic setting and evolution of the Morin anorthosite, Grenville province, Quebec
The Morin Anorthosite Mass underlies an area of 2 500 square kilometers; it consists of three tectonic units: a dome, a diapir and a nappe.The units have in common a large part of their magmatic history, but their tectonic evolution is different.Under the influence of gravity, the dome and the diapir behaved as buoyant masses, while the nappe and p