Abstract

The Hope Lake stock is a small, concordant, granitic pluton which has intruded a sequence of Precambrian metavolcanic rocks. The stock consists of two plugs, subcircular in plan, one of monzonite, the other of granite. The available data suggest that the stock was emplaced by multiple forceful intrusion of monzonite and granite magmas. Room was acquired by lateral displacement and by upward wedging of the wallrocks, aided in part by faulting. The physical conditions of emplacement were essentially those of the enclosing regionally-metamorphosed terrain (almandine amphibolite facies), suggesting that the magmas were viscous mixtures of crystalline and liquid material.

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