- 责任者：Cui Yuanyuan (State Key Laboratory of Geological Processes and Mineral Resources ; School of Earth Sciences and Mineral Resources ; China University of Geosciences ; Beijing 100083 ; China) ; Zhao Zhidan
- 刊名：Acta Petrologica Sinica
- 出版年：2013
- 卷期：29(11)
- 关键词：花岗岩类 ; granitoid ; 岩石地球化学 ; lithogeochemistry ; 江西 ; Jiangxi Province
- 页码：p.4011-4024
- 图表：8 illus., 4 tables, 54 refs.
- 分类号：0801
- issnNo：ISSN1000-0569
- isbnNo：CN11-1922/P
This paper presents the petrologic, whole-rock geochemical, zircon U-Pb dating and Hf isotopic data of host granites and dioritic enclaves from the Huitong pluton, southern Jiangxi province. Zircon U-Pb dating results indicate that the dioritic enclave （425.0 ±4. 1Ma）, is coeval with the host granitoid （425.8 ± 6.2Ma）, which is during late stage of Early Paleozoic. The Huitong granitoids are belong to peraluminous （ A/CNK - 1.05 - 1.28 ） and high-K calc-alkaline series. They are enriched in Rb, Th, U, K, and Pb, and depleted in Ba, Sr, P, and Ti, with significant Eu negative anomaly. The rocks show S-type granite affinities. The zircon εHf（t） of host granites （ - 13.7 - -3.3） and dioritic enclaves （ -8. 4 - -3.2） are all negative values, with Hf crustal model ages ranging from 1.6Ga to 2. 3 Ga. Combined with previous data, a wide range of mature crust anatexis events took place in the southern of Jiangxi Province during Early Paleozoic. The partial melting of middle-lower crust finally formed the Huitong pluton, in a post-orogenic extension tectonic environment.