Melt extraction and reaction in the forearc mantle: Constraints from trace elements and isotope geochemistry of ultra-refractory peridotites of the New Caledonia Peridotite Nappe
文献类型：期刊论文
| 作者 | Xu, Yang1; Liu, Chuan-zhou1,2,3,4; Lin, Wei3,4 |
| 刊名 | LITHOS
 |
| 出版日期 | 2021 |
| 卷号 | 380页码:16 |
| ISSN号 | 0024-4937 |
| 关键词 | Ultra-refractory peridotites Forearc mantle New Caledonia ophiolite Orthopyroxene trace elements Dunite Websterite |
| DOI | 10.1016/j.lithos.2020.105882 |
| 英文摘要 | The forearc mantle has generally experienced high degrees of partial melting and pervasive melt-rock reactions. Large ultramafic massifs of the New Caledonia ophiolite (Peridotite Nappe) provide opportunities for studying processes within the forearc mantle. Samples of harzburgite, dunite and websterite from three massifs (i.e., Me Maoya, Ouasse Bay, Massif du Sud) have been selected in this study. The peridotites have low contents of Al2O3 (0.10-0.78 wt%) and CaO (0.21-0.58 wt%), but high olivine Fo (90.8-92.5) and spinel Cr# (0.55-0.74) values. This indicates that they have experienced high degrees of partial melting, resulting in the complete consumption of primary clinopyroxene. Trace elements of orthopyroxenes have been measured to constrain the evolution of the New Caledonia harzburgites. Results show that orthopyroxenes have low contents of heavy rare earth element (HREE); their Yb contents are 0.04-0.39 times of chondrites, which can be modeled by similar to 25-30% of fractional melting of a depleted MORB mantle (DMM) source. The orthopyroxenes also show variable enrichment of light and middle rare earth elements (LREEs and MREEs) and large ion lithophile elements (LILEs), implying late-stage metasomatism. The websterites have high CaO (9.02-9.75 wt%) but low Al2O3 (1.59-1.60 wt%) contents. They have depleted Sr-Nd-Hf isotope compositions similar to that of New Caledonia CE-boninites and plot within the MORB field. Both websterites and dunites have Os-187/Os-188 ratios (0.12348-0.13067) comparable to that of abyssal peridotites and the New Caledonia harzburgites (0.1203-0.1534). Geochemical compositions and modeling of whole-rock and minerals of harzburgites, dunites and websterites suggest that the New Caledonia peridotites have experienced at least two-stage partial melting and reactions with various migrating melts. Moreover, we also demonstrated that trace element of orthopyroxenes can be applied to discriminate ultrarefractory harzburgites from different tectonic settings. (c) 2020 Elsevier B.V. All rights reserved. |
| WOS关键词 | MID-ATLANTIC RIDGE ; RE-OS ISOTOPES ; ORTHO-PYROXENE ; SOUTHWEST PACIFIC ; CANARY-ISLANDS ; LU-HF ; SUPRA-SUBDUCTION ; SUD OPHIOLITE ; GAKKEL RIDGE ; ICP-MS |
| 资助项目 | Strategic Priority Research Program from Chinese Academy of Sciences[XDB42020301] ; National Science Fund for Distinguished Young Scholars[42025201] ; National Natural Science Foundation of China[41902061] ; National Natural Science Foundation of China[41673038] ; China Postdoctoral Science Foundation[2019M652292] |
| WOS研究方向 | Geochemistry & Geophysics ; Mineralogy |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000612247300001 |
| 资助机构 | Strategic Priority Research Program from Chinese Academy of Sciences ; Strategic Priority Research Program from Chinese Academy of Sciences ; Strategic Priority Research Program from Chinese Academy of Sciences ; Strategic Priority Research Program from Chinese Academy of Sciences ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Strategic Priority Research Program from Chinese Academy of Sciences ; Strategic Priority Research Program from Chinese Academy of Sciences ; Strategic Priority Research Program from Chinese Academy of Sciences ; Strategic Priority Research Program from Chinese Academy of Sciences ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Strategic Priority Research Program from Chinese Academy of Sciences ; Strategic Priority Research Program from Chinese Academy of Sciences ; Strategic Priority Research Program from Chinese Academy of Sciences ; Strategic Priority Research Program from Chinese Academy of Sciences ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; Strategic Priority Research Program from Chinese Academy of Sciences ; Strategic Priority Research Program from Chinese Academy of Sciences ; Strategic Priority Research Program from Chinese Academy of Sciences ; Strategic Priority Research Program from Chinese Academy of Sciences ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Science Fund for Distinguished Young Scholars ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/100114]  |
| 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 | Liu, Chuan-zhou |
| 作者单位 | 1.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China 2.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Yang,Liu, Chuan-zhou,Lin, Wei. Melt extraction and reaction in the forearc mantle: Constraints from trace elements and isotope geochemistry of ultra-refractory peridotites of the New Caledonia Peridotite Nappe[J]. LITHOS,2021,380:16. |
| APA | Xu, Yang,Liu, Chuan-zhou,&Lin, Wei.(2021).Melt extraction and reaction in the forearc mantle: Constraints from trace elements and isotope geochemistry of ultra-refractory peridotites of the New Caledonia Peridotite Nappe.LITHOS,380,16. |
| MLA | Xu, Yang,et al."Melt extraction and reaction in the forearc mantle: Constraints from trace elements and isotope geochemistry of ultra-refractory peridotites of the New Caledonia Peridotite Nappe".LITHOS 380(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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