摘要
Gabbro, gabbroporphyrite and hornblende gabbro, occurring in spinel serpentinite as irregular blocks in the Darbut ophiolitic mélange, West Jungar (North Xinjiang, Northwest China), are studied in this paper. Based on the calculation using Darbut spinel-lherzolite as mantle source, gabbro was formed by the melt fractional crystallization, while gabbroporphyrite and hornblende gabbro were formed via crystallization of the remnant melts.