The Early Permian mafic-ultramafic complexes in the Beishan Terrane, NW China: Alaskan-type intrusives or rift cumulates?
文献类型：期刊论文
| 作者 | Su, Ben-Xun1; Qin, Ke-Zhang1; Santosh, M.2; Sun, He1; Tang, Dong-Mei1 |
| 刊名 | JOURNAL OF ASIAN EARTH SCIENCES
 |
| 出版日期 | 2013-04-08 |
| 卷号 | 66页码:175-187 |
| 关键词 | Beishan Terrane Central Asian Orogenic Belt Mafic-ultramafic complex Geochemistry Alaskan-type complex Post-orogenic extension |
| ISSN号 | 1367-9120 |
| DOI | 10.1016/j.jseaes.2012.12.039 |
| 文献子类 | Article |
| 英文摘要 | The petrogenesis and geodynamic setting of the Early Permian mafic-ultramafic complexes in the Beishan Terrane, NW China have important bearing on the prospects of Ni-Cu-PGE sulfide and Ti-Fe oxide deposits, as well as in understanding the history of evolution of the southern Central Asian Orogenic Belt (CAOB). Here we present results from a detailed study on a representative suit of a mafic-ultramafic rocks from the Bijiashan complex in the Beishan Terrane. The complex is composed of dunite, troctolite, olivine gabbro and gabbro without clinopyroxenite or hornblendite. In addition to olivine and clinopyroxene, orthopyroxene and plagioclase are also present in all these rock types, in the absence of chromite or primary hornblende. The minerals display marked compositional variations with the Fo content in olivines ranging from 66 to 83 and the clinopyroxenes ranging from diopside to augite. The whole-rock geochemistry shows good correlations among the major elements, and the trace elements are characterized by flat REE patterns with Eu positive anomalies, and HFSE depletion relative to LILE. These features are comparable to other mafic-ultramafic complexes in the Beishan and Eastern Tianshan terranes, but obviously deviate from the typical features of Alaskan-type intrusives. The present study suggests that the Beishan complexes were formed in a post-orogenic extensional environment with potential for Ni-Cu mineralization, rather than in arc-related setting with Alaskan-type PGE mineralization. Our study confirms that the Beishan area does not conform to an arc-related setting, but was located within a rift setting in Permian probably related to Permian mantle plume event, suggesting that the subduction of the Paleo-Asian ocean had culminated by this time, and the southern CAOB witnessed a post-orogenic extensional regime in late Paleozoic. (C) 2013 Elsevier Ltd. All rights reserved. |
| WOS关键词 | ASIAN OROGENIC BELT ; PALEOZOIC TECTONIC EVOLUTION ; ORE-FORMING PROCESSES ; NI SULFIDE DEPOSITS ; EASTERN TIANSHAN ; CONTINENTAL GROWTH ; NORTHWEST CHINA ; TARIM BASIN ; PRINCIPAL CHARACTERISTICS ; GEODYNAMIC EVOLUTION |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000317540100012 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Natural Science Foundation of China(41030424 ; National Natural Science Foundation of China(41030424 ; Foundation for the Supervisor of Beijing Excellent Doctoral Dissertation(20128000101) ; Foundation for the Supervisor of Beijing Excellent Doctoral Dissertation(20128000101) ; Hong Kong Scholars Program(XJ2012048) ; Hong Kong Scholars Program(XJ2012048) ; Chinese Government ; Chinese Government ; 41173011) ; 41173011) ; National Natural Science Foundation of China(41030424 ; National Natural Science Foundation of China(41030424 ; Foundation for the Supervisor of Beijing Excellent Doctoral Dissertation(20128000101) ; Foundation for the Supervisor of Beijing Excellent Doctoral Dissertation(20128000101) ; Hong Kong Scholars Program(XJ2012048) ; Hong Kong Scholars Program(XJ2012048) ; Chinese Government ; Chinese Government ; 41173011) ; 41173011) ; National Natural Science Foundation of China(41030424 ; National Natural Science Foundation of China(41030424 ; Foundation for the Supervisor of Beijing Excellent Doctoral Dissertation(20128000101) ; Foundation for the Supervisor of Beijing Excellent Doctoral Dissertation(20128000101) ; Hong Kong Scholars Program(XJ2012048) ; Hong Kong Scholars Program(XJ2012048) ; Chinese Government ; Chinese Government ; 41173011) ; 41173011) ; National Natural Science Foundation of China(41030424 ; National Natural Science Foundation of China(41030424 ; Foundation for the Supervisor of Beijing Excellent Doctoral Dissertation(20128000101) ; Foundation for the Supervisor of Beijing Excellent Doctoral Dissertation(20128000101) ; Hong Kong Scholars Program(XJ2012048) ; Hong Kong Scholars Program(XJ2012048) ; Chinese Government ; Chinese Government ; 41173011) ; 41173011) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/86792]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Su, Ben-Xun |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 2.China Univ Geosci, Sch Earth Sci & Resources, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Su, Ben-Xun,Qin, Ke-Zhang,Santosh, M.,et al. The Early Permian mafic-ultramafic complexes in the Beishan Terrane, NW China: Alaskan-type intrusives or rift cumulates?[J]. JOURNAL OF ASIAN EARTH SCIENCES,2013,66:175-187. |
| APA | Su, Ben-Xun,Qin, Ke-Zhang,Santosh, M.,Sun, He,&Tang, Dong-Mei.(2013).The Early Permian mafic-ultramafic complexes in the Beishan Terrane, NW China: Alaskan-type intrusives or rift cumulates?.JOURNAL OF ASIAN EARTH SCIENCES,66,175-187. |
| MLA | Su, Ben-Xun,et al."The Early Permian mafic-ultramafic complexes in the Beishan Terrane, NW China: Alaskan-type intrusives or rift cumulates?".JOURNAL OF ASIAN EARTH SCIENCES 66(2013):175-187. |
入库方式： OAI收割
来源：地质与地球物理研究所
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