Geochronology, Geochemistry and Hf Isotope of the Late Mesozoic Granitoids from the Lushi Polymetal Mineralization Area: Implication for the Destruction of Southern North China Craton
文献类型：期刊论文
| 作者 | Zhai, Yuanyuan1,2,4; Gao, Shuai2,3,4; Zeng, Qingdong1,2,4; Chu, Shaoxiong2,4 |
| 刊名 | JOURNAL OF EARTH SCIENCE
 |
| 出版日期 | 2020-04-01 |
| 卷号 | 31期号:2页码:313-329 |
| 关键词 | Late Mesozoic granitoids geochronology geochemistry Hf isotopic composition southern margin of NCC cratonic destruction |
| ISSN号 | 1674-487X |
| DOI | 10.1007/s12583-020-1277-y |
| 英文摘要 | The North China Craton (NCC) is the best example of an Archean craton that has lost its stability in the Late Mesozoic. Although the cratonic destruction is generally considered to have occurred in the Eastern Block and reached a peak in the Early Cretaceous, the exact areal extent of cratonic destruction is debated, especially the southern and northern margin of the NCC. Here we report geochronology, geochemical and Hf isotopic data of the Late Mesozoic granitoids from Lushi polymetal mineralization area (LPMA) in the southern margin of NCC. These results provide new insights into the destruction in the southern margin of the NCC during the Late Mesozoic. Zircon U-Pb dating indicates that eight granitoids intruded in the Late Jurassic to Early Cretaceous (136.8-154.1 Ma), respectively. Geochemical signatures define these granitoids being A-type or I-type granite that formed in an extension setting. In addition, Hf isotopic compositions of zircons from these granitoids vary in a relatively large range, with epsilon(Hf)(t) values and T-DM2 ages ranginge from -26.1 to +15.2 and 215 to 2 849 Ma, respectively. The parental magmas were likely derived from diverse sources, including materials of the partial melting of ancient lower crust and mantle-derived mafic magmas in various proportions. Combining with previous studies on the contemporaneous magma-tectonic activities in circum of NCC, we suggest that the rim of NCC was already unstabilized from the Late Jurassic in the LPMA. The subduction of the Paleo-Pacific Plate was the main trigger to the destruction of the southern margin of NCC, which was responsible for the lithospheric extension and thinning, extensive magmatism and mineralization. |
| WOS关键词 | LITHOSPHERIC MANTLE BENEATH ; PORPHYRY MO DEPOSIT ; A-TYPE GRANITOIDS ; U-PB AGES ; QINLING OROGEN ; TRACE-ELEMENT ; HENAN PROVINCE ; TECTONIC SIGNIFICANCE ; MOLYBDENUM DEPOSITS ; SPATIAL VARIATIONS |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000526877500009 |
| 出版者 | CHINA UNIV GEOSCIENCES, WUHAN |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/95565]  |
| 专题 | 地质与地球物理研究所_中国科学院矿产资源研究重点实验室 |
| 通讯作者 | Gao, Shuai; Zeng, Qingdong |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China 3.Linyi Nat Resources & Planning Bur, Linyi 276000, Shandong, Peoples R China 4.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhai, Yuanyuan,Gao, Shuai,Zeng, Qingdong,et al. Geochronology, Geochemistry and Hf Isotope of the Late Mesozoic Granitoids from the Lushi Polymetal Mineralization Area: Implication for the Destruction of Southern North China Craton[J]. JOURNAL OF EARTH SCIENCE,2020,31(2):313-329. |
| APA | Zhai, Yuanyuan,Gao, Shuai,Zeng, Qingdong,&Chu, Shaoxiong.(2020).Geochronology, Geochemistry and Hf Isotope of the Late Mesozoic Granitoids from the Lushi Polymetal Mineralization Area: Implication for the Destruction of Southern North China Craton.JOURNAL OF EARTH SCIENCE,31(2),313-329. |
| MLA | Zhai, Yuanyuan,et al."Geochronology, Geochemistry and Hf Isotope of the Late Mesozoic Granitoids from the Lushi Polymetal Mineralization Area: Implication for the Destruction of Southern North China Craton".JOURNAL OF EARTH SCIENCE 31.2(2020):313-329. |
入库方式： OAI收割
来源：地质与地球物理研究所
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