OKANAGAN GNEISSES: INSIGHTS INTO PROTOLITH, GNEISS FORMATION, AND EOCENE EXTENSIONThe Okanagan Valley Shear Zone (OVSZ) delineates the western margin of a large Eocene metamorphic core complex which juxtaposes sillimanite-grade and non-metamorphosed rocks across the Okanagan Valley. The OVSZ is ...
We report the result of H 2 O-undersaturated melting experiments on charges consisting of a layer of powdered sillimanite-bearing metapelite (HQ36) and a layer of powdered tonalitic gneiss (AGC150). Experiments were conducted at 10 kbar at 900掳, 925掳 and 950掳C. When run alone, the...