Geochemical characteristics of the early Neoarchean komatiite from the North China Craton: Evidence for plume-craton interaction
文献类型：期刊论文
| 作者 | Zuo, Rui1; Long, Xiaoping1; Zhai, Mingguo3; Zhang, Shitao1; Zhao, Bingshuang1; Zhao, Jing2; Zhu, Xi1 |
| 刊名 | PRECAMBRIAN RESEARCH
 |
| 出版日期 | 2021-06-01 |
| 卷号 | 357页码:16 |
| 关键词 | Komatiites Taishan Group Greenstone belt Neoarchean Mantel plume |
| ISSN号 | 0301-9268 |
| DOI | 10.1016/j.precamres.2021.106143 |
| 英文摘要 | Komatiite is characterized by extremely high MgO contents and H2O-poor nature and plays an important role in understanding the early mantle-derived magma processes, crust-mantle differentiation of the Archean earth, but it is sparse in the North China Craton. Although komatiitic rocks have ever been discovered in the Mengyin area, their formation ages and types are still in debate. Here, we firstly report a new komatiite outcrop near Nanbaita village (Jinan city) of the western Shandong Province and present new major and trace element contents, as well as Sr-Nd and Re-Os isotopic compositions. The rocks show spinifex texture with primary olivine and pyroxene skeletal needles have been transformed into secondary minerals (e.g., serpentine, tremolite). The komatiites display extremely high MgO, but low TiO2 and Na2O + K2O. Their chondritic Al2O3/TiO2 and Gd-N/Yb-N ratios suggest they are Aluminium-undepleted komatiites which are generated by larger degrees of melting (similar to 50%) in relatively lower pressure (ca. 5-7 GPa) with garnet absence than Aluminium-depleted komatiites. The formation age of these komatiites was no later than 2.69 Ga constrained by the Re depletion age. Flat heavy rare earth element patterns and low Re-187/Os-188 and Th/Yb ratios show the primary komatiitic magma was not contaminated by substantial crustal material. The.Os value of sample 18LH51 is 0.09, which is adjacent with chondrite and other contemporaneous komatiites in the world, indicating that the Nanbaita komatiites were originated from a chondritic mantle. Furthermore, the widely distribution of similar to 2.7 Ga ultramafic-mafic rocks in the western Shandong Province might be the reflection of a contemporaneous worldwide superplume event. |
| WOS关键词 | WESTERN SHANDONG PROVINCE ; ABITIBI GREENSTONE-BELT ; ZIRCON U-PB ; ARCHEAN CRUSTAL EVOLUTION ; PLATINUM-GROUP ELEMENTS ; HF ISOTOPIC COMPOSITION ; EASTERN DHARWAR CRATON ; RE-OS ISOTOPE ; HIGHLY SIDEROPHILE ; ULTRAMAFIC ROCKS |
| 资助项目 | National Natural Science Foundation of China[41890831] ; MOST Special Fund from the State Key Laboratory of Continental Dynamics |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000652097000013 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; MOST Special Fund from the State Key Laboratory of Continental Dynamics ; MOST Special Fund from the State Key Laboratory of Continental Dynamics ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; MOST Special Fund from the State Key Laboratory of Continental Dynamics ; MOST Special Fund from the State Key Laboratory of Continental Dynamics ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; MOST Special Fund from the State Key Laboratory of Continental Dynamics ; MOST Special Fund from the State Key Laboratory of Continental Dynamics ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; MOST Special Fund from the State Key Laboratory of Continental Dynamics ; MOST Special Fund from the State Key Laboratory of Continental Dynamics |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/101229]  |
| 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 | Long, Xiaoping |
| 作者单位 | 1.Northwest Univ, Dept Geol, State Key Lab Continental Dynam, Northern Taibai Str 229, Xian 710069, Peoples R China 2.Chengdu Univ Technol, Coll Earth Sci, Dept Geochem, Chengdu 610059, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zuo, Rui,Long, Xiaoping,Zhai, Mingguo,et al. Geochemical characteristics of the early Neoarchean komatiite from the North China Craton: Evidence for plume-craton interaction[J]. PRECAMBRIAN RESEARCH,2021,357:16. |
| APA | Zuo, Rui.,Long, Xiaoping.,Zhai, Mingguo.,Zhang, Shitao.,Zhao, Bingshuang.,...&Zhu, Xi.(2021).Geochemical characteristics of the early Neoarchean komatiite from the North China Craton: Evidence for plume-craton interaction.PRECAMBRIAN RESEARCH,357,16. |
| MLA | Zuo, Rui,et al."Geochemical characteristics of the early Neoarchean komatiite from the North China Craton: Evidence for plume-craton interaction".PRECAMBRIAN RESEARCH 357(2021):16. |
入库方式： OAI收割
来源：地质与地球物理研究所
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