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Occurrence of an Alaskan-type complex in the Middle Tianshan Massif, Central Asian Orogenic Belt: inferences from petrological and mineralogical studies

文献类型：期刊论文

作者Su, Ben-Xun1,2; Qin, Ke-Zhang1; Sakyi, Patrick Asamoah3; Malaviarachchi, Sanjeewa P. K.4; Liu, Ping-Ping1,2; Tang, Dong-Mei1; Xiao, Qing-Hua1; Sun, He1; Ma, Yu-Guang5; Mao, Qian5
刊名INTERNATIONAL GEOLOGY REVIEW
出版日期2012
卷号54期号:3页码:249-269
关键词Alaskan-type mafic-ultramafic complex Central Asian Orogenic Belt mafic-ultramafic complex Middle Tianshan Massif continental arc
ISSN号0020-6814
DOI10.1080/00206814.2010.543009
文献子类Article
英文摘要The Xiadong mafic-ultramafic complex lies in the central part of the Middle Tianshan Massif (MTM), along the southern margin of the Central Asian Orogenic Belt (CAOB). This complex is composed of dunite, hornblende (Hbl) clinopyroxenite, hornblendite, and Hbl gabbro. These rocks are characterized by adcumulated textures and variable alteration. Orthopyroxene is an extremely rare mineral in all rock units and plagioclase is absent in dunite and Hbl clinopyroxenite. Hbl, Fe-chromite, and Cr-magnetite are common phases. Olivines have forsterite (Fo) contents ranging from 92.3 to 96.6. Clinopyroxenes are Ca-rich, Ti-poor diopsides, and mostly altered to tremolites or actinolites. Chromites display low TiO2 and Al2O3 contents and high Cr# and Fe2+/(Fe2+ + Mg) values. Primary and secondary Hbls show wide compositional variations. These petrological and mineralogical features as well as mineral chemistry are comparable to typical Alaskan-type complexes worldwide, which are widely considered to have formed above subduction zones. The chemistry of clinopyroxene and chromite supports an arc plate-tectonic origin for the Xiadong complex. Its confirmation as an Alaskan-type complex implies that the MTM, with Precambrian basement, was probably a continental arc during oceanic plate underflow and further supports the hypothesis of southward subduction of the Palaeozoic Junggar Ocean.
WOS关键词MAFIC-ULTRAMAFIC INTRUSIONS ; ZIRCON U-PB ; PALEOZOIC TECTONIC EVOLUTION ; ORE-FORMING PROCESSES ; CU-NI DEPOSIT ; NW CHINA ; EASTERN TIANSHAN ; CONTINENTAL GROWTH ; NORTHWESTERN CHINA ; BEISHAN AREA
WOS研究方向Geology
语种英语
WOS记录号WOS:000300153300001
出版者TAYLOR & FRANCIS INC
资助机构Nature Science Foundation of China(41030424) ; Nature Science Foundation of China(41030424) ; Nature Science Foundation of China(41030424) ; Nature Science Foundation of China(41030424) ; Chinese Academy of Sciences(KZCX2-YW-107) ; Chinese Academy of Sciences(KZCX2-YW-107) ; Chinese Academy of Sciences(KZCX2-YW-107) ; Chinese Academy of Sciences(KZCX2-YW-107) ; Chinese State 305 Programme(2006BAB07B03-01) ; Chinese State 305 Programme(2006BAB07B03-01) ; Chinese State 305 Programme(2006BAB07B03-01) ; Chinese State 305 Programme(2006BAB07B03-01) ; Nature Science Foundation of China(41030424) ; Nature Science Foundation of China(41030424) ; Nature Science Foundation of China(41030424) ; Nature Science Foundation of China(41030424) ; Chinese Academy of Sciences(KZCX2-YW-107) ; Chinese Academy of Sciences(KZCX2-YW-107) ; Chinese Academy of Sciences(KZCX2-YW-107) ; Chinese Academy of Sciences(KZCX2-YW-107) ; Chinese State 305 Programme(2006BAB07B03-01) ; Chinese State 305 Programme(2006BAB07B03-01) ; Chinese State 305 Programme(2006BAB07B03-01) ; Chinese State 305 Programme(2006BAB07B03-01) ; Nature Science Foundation of China(41030424) ; Nature Science Foundation of China(41030424) ; Nature Science Foundation of China(41030424) ; Nature Science Foundation of China(41030424) ; Chinese Academy of Sciences(KZCX2-YW-107) ; Chinese Academy of Sciences(KZCX2-YW-107) ; Chinese Academy of Sciences(KZCX2-YW-107) ; Chinese Academy of Sciences(KZCX2-YW-107) ; Chinese State 305 Programme(2006BAB07B03-01) ; Chinese State 305 Programme(2006BAB07B03-01) ; Chinese State 305 Programme(2006BAB07B03-01) ; Chinese State 305 Programme(2006BAB07B03-01) ; Nature Science Foundation of China(41030424) ; Nature Science Foundation of China(41030424) ; Nature Science Foundation of China(41030424) ; Nature Science Foundation of China(41030424) ; Chinese Academy of Sciences(KZCX2-YW-107) ; Chinese Academy of Sciences(KZCX2-YW-107) ; Chinese Academy of Sciences(KZCX2-YW-107) ; Chinese Academy of Sciences(KZCX2-YW-107) ; Chinese State 305 Programme(2006BAB07B03-01) ; Chinese State 305 Programme(2006BAB07B03-01) ; Chinese State 305 Programme(2006BAB07B03-01) ; Chinese State 305 Programme(2006BAB07B03-01)
源URL[http://ir.iggcas.ac.cn/handle/132A11/84498]  
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.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
3.Univ Ghana, Dept Earth Sci, Legon, Ghana
4.Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT 0200, Australia
5.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		 Su, Ben-Xun,Qin, Ke-Zhang,Sakyi, Patrick Asamoah,et al. Occurrence of an Alaskan-type complex in the Middle Tianshan Massif, Central Asian Orogenic Belt: inferences from petrological and mineralogical studies[J]. INTERNATIONAL GEOLOGY REVIEW,2012,54(3):249-269.
APA Su, Ben-Xun.,Qin, Ke-Zhang.,Sakyi, Patrick Asamoah.,Malaviarachchi, Sanjeewa P. K..,Liu, Ping-Ping.,...&Mao, Qian.(2012).Occurrence of an Alaskan-type complex in the Middle Tianshan Massif, Central Asian Orogenic Belt: inferences from petrological and mineralogical studies.INTERNATIONAL GEOLOGY REVIEW,54(3),249-269.
MLA Su, Ben-Xun,et al."Occurrence of an Alaskan-type complex in the Middle Tianshan Massif, Central Asian Orogenic Belt: inferences from petrological and mineralogical studies".INTERNATIONAL GEOLOGY REVIEW 54.3(2012):249-269.

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