The delineation and significance of the continental-margin volcanic-magmatic arc zone in the northern part of the Bangong-Nujiang suture zone
LIAO Liu-gen1,2,CAO Sheng-hua2,XIAO Ye-bin2,OUYANG Ke-gui2,HU Zhao-rong2,FENG Guo-sheng2(1. China University of Geosciences, Wuhan 430074, Hubei, China; 2. Jiangxi Institute of Geological Survey, Nanchang 330201, Jiangxi, China)
The Wufengjian-Larelaxin volcanic-magmatic zone composed of the Late Jurassic volcanic rocks and Early Cretaceous intermediate-acidic intrusive rocks ((Larelaxin and Changlonghe superunits) is aligned in the northern part of the Bangong-Nujiang suture zone. The volcanic rocks and early (quartz) diorite and granodiorite (Tangzha-Nalielong and Fenghuoshan units) are assigned to the magmatic arc granites generated from the northward subduction and collision of the Meso-Tethyan Ocean and South Qiangtang block during the Late Jurassic to the Early Cretaceous, whereas the late granites (Aiyongco-Songmo unit) belong to the post-orogenic granites formed posterior to the northward subduction and collision cited above.
【CateGory Index】： P588.1