Isotopic and trace element study of the Loon Lake pluton, Grenville Province, Ontario

The Loon Lake pluton is a small, reversely zoned pluton with subordinate isolated bodies of diorite and granodiorite gneiss. This pluton is located within the Hastings Basin of the Grenville Province and intrudes the structurally complex Grenville Supergroup.A synthesis of the oxygen and strontium isotopic and trace element data for the monzonite core and quartz monzonite rim indicates that these units are cogenetic but the margin of the pluton …