Zircon U–Pb dating of Pubei granite and strontium isotope from sphalerite of the Xinhua Pb–Zn–(Ag) deposit, Yunkai Area of Guangxi Province, South China
作者： Minfang Wang , Xubo Zhang , Daohui Pi , Xiaonan Guo
DOI: 10.1007/S11631-015-0084-0
关键词:
摘要: The Yunkai Area is located at the southern South China Block and part of Qinzhou Bay-Hangzhou Bay Metallogenic Belt, which a famous polymetallic mineralization belt. Xinhua Pb–Zn–(Ag) deposit in western Area, with an abundance Pubei batholiths. Zircon U–Pb geochronology batholiths shows that crystallization age ranges from 251.9 ± 2.2 to 244.3 ± 1.8 Ma, thus belonging Indosinian orogeny. Geochemistry Sr isotopic compositions show it derived partial melting large scale crustal during stage exhumation uplifting lower-middle crust. In addition, strontium isotope sphalerite deposit, has limited 87Rb/86Sr 87Sr/86Sr, ranging 0.4077 1.0449, 0.718720 0.725245, respectively. initial 87Sr/86Sr ratios between higher than upper continental crust lower batholiths, illustrating fluid might be mixing pluton
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