| 中国东部中生代岩浆岩的时空分布及其与热液型铀矿的关系 |
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| 引用本文： | 巫建华,郭国林,郭佳磊,张旗,吴仁贵,余达淦.中国东部中生代岩浆岩的时空分布及其与热液型铀矿的关系[J].岩石学报,2017,33(5):1591-1614. |
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| 作者姓名： | 巫建华 郭国林 郭佳磊 张旗 吴仁贵 余达淦 |
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| 作者单位： | 东华理工大学核资源与环境国家重点实验室培育基地, 南昌 330013;东华理工大学地球科学学院, 南昌 330013,东华理工大学核资源与环境国家重点实验室培育基地, 南昌 330013,东华理工大学地球科学学院, 南昌 330013,中国科学院地质与地球物理研究所, 北京 100029,东华理工大学地球科学学院, 南昌 330013,东华理工大学核资源与环境国家重点实验室培育基地, 南昌 330013 |
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| 基金项目： | 本文受国家自然科学基金项目（41372071）和中国核工业集团公司项目（中核地计[2008]74号）联合资助. |
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| 摘 要： | 中国东部中生代岩浆活动强烈,热液型铀矿分布广泛。空间上,自北而南可划分出大兴安岭、小兴安岭-长白山、冀北-辽西、大别山北缘、长江中下游、扬子陆块东南缘、武夷-云开、东南沿海8个火山-侵入岩带和沽源-红山子、青龙-兴城、庐枞-栖霞、赣杭、武夷山、桃山-诸广、郴州-钦州、湘中、雪峰山-摩天岭9个热液型铀成矿带以及满洲里-额尔古纳、扎兰屯、伊春、金寨、天目山5个铀成矿远景带;时间上,从早到晚可划分出250~230Ma、228~205Ma、195~175Ma、165~150Ma、145~130Ma、126~115Ma、110~100Ma、97~80Ma 8个不同时期的岩浆活动和早期深源高温、晚期浅源低温两个成矿系统,深源高温成矿系统可划分出11个矿床式,浅源低温成矿系统可划分出15个矿床式。勘查成果显示,热液型铀矿对岩浆岩的岩性岩相没有选择性,但与特定时期的岩浆岩有密切的关系,其中与花岗岩有关的热液型铀矿主要赋存在三叠纪花岗岩中,与火山岩有关的热液型铀矿主要赋存在早白垩世早期高钾钙碱性流纹岩-碱性粗面岩组合中,而且晚期高侵位小岩体或火山斑岩体的内、外接触带是有利的赋矿部位。
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| 关 键 词： | 岩浆岩 时空分布 热液型铀矿 中生代 中国东部 |
| 收稿时间： | 2016/10/2 0:00:00 |
| 修稿时间： | 2017/1/1 0:00:00 |
Spatial-temporal distribution of Mesozoic igneous rock and their relationship with hydrothermal uranium deposits in eastern China |
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| WU JianHu,GUO GuoLin,GUO JiaLei,ZHANG Qi,WU RenGui and YU DaGan.Spatial-temporal distribution of Mesozoic igneous rock and their relationship with hydrothermal uranium deposits in eastern China[J].Acta Petrologica Sinica,2017,33(5):1591-1614. |
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| Authors: | WU JianHu GUO GuoLin GUO JiaLei ZHANG Qi WU RenGui and YU DaGan |
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| Institution: | State Key Laboratory Breeding Base of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, China;Collage of Earth Science, East China University of Technology, Nanchang 330013,State Key Laboratory Breeding Base of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, China,Collage of Earth Science, East China University of Technology, Nanchang 330013,Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China,Collage of Earth Science, East China University of Technology, Nanchang 330013 and State Key Laboratory Breeding Base of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, China |
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| Abstract: | It was characterized by extensive development of Mesozoic magmatism and widely distributed a large number of hydrothermal uranium deposits in eastern China. According to the spatial distribution of igneous rocks and uranium deposits from north to the south, it can be divided into 8 volcanic intrusive belts of Great Xing''an Range, Lesser Xing''an-Changbaishan, northern Hebei-western Liaoning, northern Dabieshan, the Middle-Lower Reaches of Yangtze River, southeastern Yangtze Block, Wuyi-yunkai areas, the Southeast Coastal areas, and 9 hydrothermal uranium metallogenic belts of Guyuan-Hongshanzi, Qinglong-Xingcheng, Luzong-Qixia, Ganhang, Wuyi Mountain, Taoshan-Zhuguang, Chenzhou-qinzhou, the Middle Hunan Province, and 5 uranium metallogenic perspective zones of Manzhouli-Erguna, Zhalantun, Yichun, Jinzhai, Tianmo Mountain. The temporal distribution of the magmatic activity of those volcanic intrusive belts can be subdivided into 8 stages, such as 250~233Ma, 228~205Ma, 195~175Ma, 165~150Ma, 145~130Ma, 126~115Ma, 110~100Ma, 97~80Ma, which can also be classified two-phase metallogenic systems, early stage characterized by high temperature and deep source origin, and late stage with low temperature and shallow origin. Granite type hydrothermal uranium deposits can be divided into 11 ore deposit types, and volcanic type hydrothermal uranium deposits can be divided into 15 ore deposit types. Exploration results show that granite hydrothermal type uranium deposit has a close relationship with specific periods of magmatite activity, but irrelevant with lithology and lithofacies of igneous rocks. Granite type hydrothermal uranium deposits are mainly existed in the Triassic granite, and that those volcanic type hydrothermal uranium deposits are mainly hosted in inner and outer contact zones of the early Early Cretaceous volcanic rocks. |
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| Keywords: | Igneous rock Spatial-temporal distribution Hydrothermal uranium deposits Mesozoic Eastern China |
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