Depositional age and protoliths of the Paleoproterozoic upper Taihua Group in the Wuyang area in the southern margin of the North China Craton: New insights into stratigraphic subdivision and tectonic setting
文献类型：期刊论文
| 作者 | Lan, Caiyun1; Zhou, Yanyan2; Wang, Changle3; Zhao, Taiping1 |
| 刊名 | PRECAMBRIAN RESEARCH
 |
| 出版日期 | 2017-08-01 |
| 卷号 | 297页码:77-100 |
| 关键词 | Taihua Group Supracrustal rocks Detrital zircon Paleoproterozoic Wuyang area North China Craton (NCC) |
| ISSN号 | 0301-9268 |
| DOI | 10.1016/j.precamres.2017.05.014 |
| 文献子类 | Article |
| 英文摘要 | The Paleoproterozoic upper Taihua Group is widely exposed in the southern margin of the North China Craton (NCC). Stratigraphic correlation of the upper Taihua Group in the region remains unclear due to the inconsistent variation of its depositional ages, lithology assemblages and sedimentary characteristics at different locations. Here we present systematic whole-rock major and trace element, Nd isotope and zircon U-Pb age data for the upper Taihua Group from the poorly studied Wuyang area. Protoliths of the upper Taihua Group in this area are a suite of sequences containing mafic volcanic rocks, chemical sedimentary rocks, pelites and arenites. The depositional age of the upper Taihua Group in the Wuyang area is well constrained from 2470 to 2158 Ma. Comprehensive lithological comparison of protoliths of the upper Taihua Group in the Wuyang, Lushan, Xionger'ershan and Xiaoqinling areas shows striking lithologic similarity among them. Two widely exposed strata, the iron-rich and carbonaceous strata in these areas, can be considered as the lithological markers. In combination with the previously dated 2.3 Ga maximum depositional age of the carbonaceous stratum in the Lushan area, we propose that the upper Taihua Group in the whole region can be subdivided into the 2.47-2.3 Ga Iron-rich Formation and the 2.3-2.15 Ga overlying Carbonaceous Formation. Additionally, two types of meta-mafic volcanic rocks in the Iron-rich Formation from the Wuyang area are identified. One is characterized by depletion in Nb, Ta and Ti, enrichment in LREE and positive epsilon(Nd)(t) values (+0.9 to +1.3), similar to that of arc-type basalt. The other have nearly flat REE patterns and higher epsilon(Nd)(t) values (+2.1 to +3.3), depleted in Th instead of Nb and Ta, suggesting geochemical affinity similar to N-MORB components. Taking all the data together, we infer that the upper Taihua Group deposited in a back-arc basin at 2.47-2.3 Ga as oceanic subduction coupled with contemporary mantle upwelling related to back-arc basin extension can account for the typical interaction between MORB and arc-like components, and then at stable continental margin at 2.3-2.15 Ga based on the carbonaceous pelitic series. (C) 2017 Elsevier B.V. All rights reserved. |
| WOS关键词 | SHRIMP U-PB ; ULTRAHIGH-TEMPERATURE METAMORPHISM ; ARCHEAN CRUSTAL EVOLUTION ; SINO-KOREAN CRATON ; BACK-ARC BASIN ; HENAN PROVINCE ; ZIRCON GEOCHRONOLOGY ; GREENSTONE-BELT ; PETROGENETIC CONSTRAINTS ; ISOTOPIC CONSTRAINTS |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000404697200005 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | National Natural Science Foundation of China(41573041) ; Special Mapping and Technology Application Demonstration Project of China(12120114035101) ; National Natural Science Foundation of China(41573041) ; Special Mapping and Technology Application Demonstration Project of China(12120114035101) ; National Natural Science Foundation of China(41573041) ; Special Mapping and Technology Application Demonstration Project of China(12120114035101) ; National Natural Science Foundation of China(41573041) ; Special Mapping and Technology Application Demonstration Project of China(12120114035101) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/51780]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 通讯作者 | Zhao, Taiping |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Mineral & Metallogeny, Guangzhou 510640, Guangdong, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lan, Caiyun,Zhou, Yanyan,Wang, Changle,et al. Depositional age and protoliths of the Paleoproterozoic upper Taihua Group in the Wuyang area in the southern margin of the North China Craton: New insights into stratigraphic subdivision and tectonic setting[J]. PRECAMBRIAN RESEARCH,2017,297:77-100. |
| APA | Lan, Caiyun,Zhou, Yanyan,Wang, Changle,&Zhao, Taiping.(2017).Depositional age and protoliths of the Paleoproterozoic upper Taihua Group in the Wuyang area in the southern margin of the North China Craton: New insights into stratigraphic subdivision and tectonic setting.PRECAMBRIAN RESEARCH,297,77-100. |
| MLA | Lan, Caiyun,et al."Depositional age and protoliths of the Paleoproterozoic upper Taihua Group in the Wuyang area in the southern margin of the North China Craton: New insights into stratigraphic subdivision and tectonic setting".PRECAMBRIAN RESEARCH 297(2017):77-100. |
入库方式： OAI收割
来源：地质与地球物理研究所
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