U-Pb Zircon Ages, Geochemical and Sr-Nd-Hf Isotopic Compositions of Granitoids in Western Songpan-Garze Fold Belt: Petrogenesis and Implication for Tectonic Evolution
- Received Date: 2018-07-15
- Accepted Date: 2018-07-15
- Available Online: 2018-07-15
Abstract: Granitoids are widespread in the Songpan-Garze (松潘-甘孜) fold belt, western China. These grani-toids provide insight into regional tectono-magmatic events, basement nature and tectonic evolution. However, previous studies mainly focused on the eastern Songpan-Garze fold belt. In this article, five granitoid intrusions from the western Songpan-Garze fold belt have been studied. These intrusions are composed of quartz-diorite and granodiorite. Using LA-ICP-MS zircon dating method, the obtained magma crystallization ages are 219±2 Ma for the quartz-diorite and 216±5 Ma for the granodiorite...