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Chronology and Genesis of S‐type Granites in Hetai District, Guangdong Province: Constraints from LA‐ICP‐MS Zircon U‐Pb Dating and Tourmaline Boron Isotope In‐situ Analyses
Author(s) -
WANG Lixing,
XU Deru,
CHEN Genwen,
ZHU Yuhua
Publication year - 2017
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/1755-6724.13203
Subject(s) - tourmaline , zircon , chronology , geochemistry , geology , isotope , boron , in situ , mineralogy , chemistry , paleontology , nuclear physics , physics , organic chemistry
Hetai district, which is a mountainous area, situated on Guangning and Zhaoqing city, west Guangdong Province. Hetai district is generally located on southwest of South China Caledonian fold belt, east margin of Yunkai post-Caledonian uplift. Multiple type granites are widely distributed in Hetai district, including Caledonian, Indosinian and Yanshanian granites. Based on different formation model, previous research classified granites into three types: Migmatite formation, Anatectic granite formation and Magmatic granite formation, these granites generally followed pegmatite veins (Wang et al., 2003). Previous study suggested they belong to S-type granites due to their petrology and geochemistry characteristics (Wang et al., 2003). A lot of gold deposits distributed in Hetai district, including Gaocun, Yunxi, Jingcun and so on. Generally, granites are wall-rocks of parts ore bodies in these gold deposits (Wang et al., 2012). Although granites have close relationship with ore-forming, for their research is relatively weak. In our study, we choose Jingcun and Gaocun granites as our research objects, through petrology, geochemistry, zircon U-Pb dating and tourmaline Boron isotope analyses, to discuss their formation ages and genesis.