Sheng-Di Zhou , Xiao-Lei Wang , De-Hong Du , Benjun Wu , Xisheng Xu , Zeng-Qian Hou
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引用次数: 0
Abstract
The Late Mesozoic tectonic evolution to the west side of Pacific Ocean in SE China is an enigmatic issue and important to compare with the magmatism and mineralization to the east side in North America. However, it is hotly debated on the distribution of a large scale of felsic magmatism and associated WSn polymetallic mineralization in the wide (>1000 km) inland area of SE China. To avoid the complexity in shaping the high-silica granites in SE China, here we focus on A-type granites that are commonly free of debate in petrogenesis and lack comprehensive research. We present the spatiotemporal distribution of Mesozoic A-type granites in SE China based on a geological map-based compilation of available geochemical and geochronological data. The refined spatiotemporal distribution of the Jurassic-Cretaceous A-type granites in SE China can be further illustrated by numerical modeling of geodynamics, indicating an episodic and progressive lithospheric extension by a long-term subduction and episodic rollback of the Paleo-Pacific Plate. This study builds the strong correlation of granite formation and deep geodynamic processes in the wide inland area to the west of the Paleo-Pacific Plate.
期刊介绍:
Lithos publishes original research papers on the petrology, geochemistry and petrogenesis of igneous and metamorphic rocks. Papers on mineralogy/mineral physics related to petrology and petrogenetic problems are also welcomed.