Geochronology, geochemistry and zircon Hf isotope of the Jurassic diabase from the Tieli area, Lesser Xing' an-Zhangguangcai Range, and its geological implications
文献类型：期刊论文
| 作者 | Ge MaoHui1; Zhang JinJiang3; Liu Kai2 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2020 |
| 卷号 | 36期号:3页码:726-740 |
| 关键词 | Diabase Lesser Xing' an-Zhangguangcai Range Mudanjiang Ocean Active continental margin Central Asian Orogenic Belt |
| ISSN号 | 1000-0569 |
| DOI | 10.18654/1000-0569/2020.03.06 |
| 英文摘要 | The petrogenesis and geodynamic setting of Mesozoic magmatism in Lesser Xing' an-Zhangguangcai Range, China, hold a key to understanding the tectonic evolution of the Paleo-Pacific. In this contribution, we report a new LA-ICP-MS zircon U-Pb age, whole-rock geochemistry and Lu-Hf isotope results for the diabase from the Tieli area, in Lesser Xing' an-Zhangguangcai Range with the aims to constrain its age, petrogenesis, source and tectonic affinity. Zircons from the diabase samples had high Th/U ratios ( > 0. 3) and weak oscillatory zoning structure in the CL images, indicating their magmatic origin, and yielded a weighted mean Pb-206/U-238 age of 187 +/- 2Ma which was interpreted as the crystallization age. The geochemical and isotopic studies imply that fractional crystallization of clinopyroxene and olivine played an important role during magma evolution with insignificant crustal contamination. Moreover, they are characterized by enrichment of fluid-mobile elements (Rb, Ba, U, Pb, K and Sr), but depletion of fluid-immobile elements (Th, Nb and Ta), suggesting that the mafic magma was originated from a depleted lithospheric mantle enriched by slab-derived fluids. Modeling further reveals that the parent magma was derived from 6% similar to 20% partial melting of spinel-garnet lherzolite. Integrated with data of regional coeval magmatism, structure, metallogeny and metamorphism, our findings indicate that the Mesozoic magmatic rocks in the Lesser Xing' an-Zhangguangcai Range were probably formed in an active continental margin, resulting from the westward subduction of the Mudanjiang Ocean between the Jiamusi and Songnen blocks. |
| WOS关键词 | NE CHINA PETROGENESIS ; WHOLE-ROCK GEOCHEMISTRY ; U-PB GEOCHRONOLOGY ; VOLCANIC-ROCKS ; TRACE-ELEMENT ; LU-HF ; LITHOSPHERIC MANTLE ; MUDANJIANG OCEAN ; JIAMUSI MASSIF ; SONGLIAO BASIN |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000533620200006 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/96705]  |
| 专题 | 地质与地球物理研究所_其他部门 |
| 通讯作者 | Ge MaoHui |
| 作者单位 | 1.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 3.Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ge MaoHui,Zhang JinJiang,Liu Kai. Geochronology, geochemistry and zircon Hf isotope of the Jurassic diabase from the Tieli area, Lesser Xing' an-Zhangguangcai Range, and its geological implications[J]. ACTA PETROLOGICA SINICA,2020,36(3):726-740. |
| APA | Ge MaoHui,Zhang JinJiang,&Liu Kai.(2020).Geochronology, geochemistry and zircon Hf isotope of the Jurassic diabase from the Tieli area, Lesser Xing' an-Zhangguangcai Range, and its geological implications.ACTA PETROLOGICA SINICA,36(3),726-740. |
| MLA | Ge MaoHui,et al."Geochronology, geochemistry and zircon Hf isotope of the Jurassic diabase from the Tieli area, Lesser Xing' an-Zhangguangcai Range, and its geological implications".ACTA PETROLOGICA SINICA 36.3(2020):726-740. |
入库方式： OAI收割
来源：地质与地球物理研究所
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