| 太行山南段矿山杂岩体LA-ICP-MS锆石U-Pb年代学、地球化学及其地质意义 |
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| 引用本文： | 息朝庄,杜高峰,戴雪灵,戴塔根,夏浩东.太行山南段矿山杂岩体LA-ICP-MS锆石U-Pb年代学、地球化学及其地质意义[J].地质找矿论丛,2021,36(3):308-317. |
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| 作者姓名： | 息朝庄 杜高峰 戴雪灵 戴塔根 夏浩东 |
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| 作者单位： | 湖南城市学院土木工程学院,湖南益阳413000;东华理工大学,数字国土江西省重点实验室,南昌330013;湖南黄金集团有限责任公司,长沙410083;有色金属成矿预测教育部重点实验室,长沙410083;中南大学地球科学与信息物理学院,长沙410083;国土资源实物地质资料中心,河北燕郊065201 |
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| 基金项目： | 国家自然科学基金（编号：41103024）、联合基金项目（编号：U1812402）、湖南省教育厅科学研究一般项目（编号：20C0381）联合资助。 |
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| 摘 要： | 太行山南段矿山杂岩体主要由闪长岩、石英闪长岩及二长闪长岩组成,LA-ICP-MS锆石U-Pb测年显示,闪长岩形成于125.2 Ma±1.4 Ma—126.9 Ma±1.3 Ma,说明该岩体形成于早白垩世.矿山杂岩体具有高 w(Sr)(557×10-6～985×10-6)和 w(Sr)/w(Y)(30.9～61.8)值,...
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| 关 键 词： | 矿山杂岩体 地球化学 年代学 太行山南段 |
| 收稿时间： | 2021/3/16 0:00:00 |
| 修稿时间： | 2021/6/23 0:00:00 |
Geochemistry and chronology characteristics of Kuangshan complex in the southern Taihang Mountain and the geological significance |
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| XI Chaozhuang,DU Gaofeng,DAI Xueling,DAI Tagen,XIA Haodong.Geochemistry and chronology characteristics of Kuangshan complex in the southern Taihang Mountain and the geological significance[J].Contributions to Geology and Mineral Resources Research,2021,36(3):308-317. |
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| Authors: | XI Chaozhuang DU Gaofeng DAI Xueling DAI Tagen XIA Haodong |
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| Institution: | College of civil engineering, Hunan city university, Yiyang 413000, Hunan, China;Key Lab for digital land and resources of Jiangxi Province, East China University of technology, Nanchang 330013, China;Hunan Gold Group Ltd. Changsha 410083, China;Key Lab of metallogenic prediction of nonferrous metals, ministry of education, Changsha 410083, China;School of geosciences and info-physics, Central south university, Changsha 410083, China; Geological information centre, ministry of land and resource, Yanjiao 065201, Hebei, China |
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| Abstract: | Kuangshan complex in the South Taihangshan mountain mainly consists of diorite, quartz diorite and monzodiorite. The LA-ICS-MS dated zircon U-Pb age of the diorite is 125.2 Ma±1.4 Ma to 126.9 Ma±1.3 Ma corresponding to Early Cretaceous Period. The complex is similar to adakite with high w(Sr) (557×10-6-985×10-6) and w(Sr)/w(Y) (30.9-61.8), and low w(Y) (11.52×10-6-22.10×10-6) and w(Yb) (1.30×10-6-2.00×10-6). Th, U and large ion element (Rb, Ba, K) are enriched, high field strong element (Bb, Ta, Zr, Hf) lost. The REE pattern curve is almost the same declined to right with LREE enrichment and weakly positive Eu anomaly. Comprehensively considering characteristics of litho logic combination, lithofacies, geochemistry and zircon U-Pb chronology the complex is originated from continuous subduction and large scale delamination of the lower crust by which some of the delaminted material in duce upwell of asthnosphere to produce partially melted magma which in turn replace the overlying depleted mantle rock mass and partially rememelt them to produce the Mg-rich adakite-like rock. |
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| Keywords: | Kuangshan complex geochemistry chronology the South Taihangshan mountain |
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