Journal of Jilin University(Earth Science Edition) ›› 2019, Vol. 49 ›› Issue (2): 425-444.doi: 10.13278/j.cnki.jjuese.20170283

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Constraints on Metallogenic Time and Time-Space Serial of Igneous Rocks of Fozichong Ore Field in Guangxi Zhuang Autonomous Region

Qin Ya, Yang Qijun, Li Cheng, Zhou Shuqi, Xu Haotian   

  1. Guangxi Key Laboratory of Hidden Metallic Ore Deposits Exploration, Guilin University of Technology, Guilin 541004, Guangxi, China
  • Received:2018-02-25 Online:2019-03-26 Published:2019-03-28
  • Supported by:
    Supported by Geology and Mineral Resources Exploration Project of Prospecting Breakthrough Strategic Action of Department of Land and Resources of Guangxi Zhuang Autonomous Region (G.G.T.Z.H. No.[2016]429),National Natural Science Foundation of China (41572191),Natural Science Foundation of Guangxi (2017GXNSFBA198166,2018GXNSFAA281248),Project of Exploration for Non-Ferrous and Precious Metal Blind Ore Deposits,Ministry of Education (2018GCZX004) and Science and Technology Project of Guangxi (AD16450001)

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Abstract: The main rock types of igneous rocks in Fozichong ore field are granite,granite porphyry,granodiorite(quartz diorite),granodiorite porphyry,dacite porphyry and tuff. We measured the ages of 14 igneous rock samples in this area by LA-ICP-MS zircon U-Pb dating. The Dachong quartz diorite was formed in Permian ((256.8±2.0) Ma);Nuodong Pluton((152.6±1.2) Ma) and Guangping Pluton((152.9±2.9) Ma) were formed in the Late Jurassic of Yanshanian;granite porphyry,granite diorite porphyry,less spot granite porphyry,granite diorite porphyry,dacite porphyry and tuff were formed in the Early Cretaceous of Yanshanian (100 Ma±). The ages of the igneous rocks in Fozichong ore field are mainly concentrated in Silurian (440 Ma±),Late Permian(256 Ma±),Late Jurassic(152 Ma±), and late Early Cretaceous(100 Ma±).According to the spatial distribution,ore body characteristics and the relationship with igneous rocks,the granite porphyry is considered to be the metallogenic geological body,and the metallogenic age is defined as the late Early Cretaceous (about 100 Ma).

Key words: igneous rocks, chronology, metallogenic time, Fozichong lead-zinc ore field

CLC Number: 

  • P588.1
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