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HIGH-PRESSURE METAMORPHISM OF SERPENTINIZED CHROMITITE AT LUOBUSHA (SOUTHERN TIBET)

文献类型：期刊论文

作者Huang, Meng-xi1,2; Yang, Jian-jun1; Powell, Roger3; Mo, Xuanxue4,5
刊名AMERICAN JOURNAL OF SCIENCE
出版日期2014
卷号314期号:1页码:400-433
关键词Chromitite lizardite Luobusha peridotites Tibet UHP metamorphism
ISSN号0002-9599
DOI10.2475/01.2014.11
文献子类Article
英文摘要Podiform chromitite with a dunite envelope occurs in harzburgite in the Luobusha ophiolite in the Yarlung-Zangbo suture zone, Tibet, SW China. The chromite and olivine grains come in two main forms in the chromitite: larger spherically-haped (nodular), and dispersed (disseminated) smaller-grains The nodular chromite and olivine grains, and their "melt inclusions," indicate that their formation was via a magmatic process, most likely in the upper mantle. The disseminated chromite and olivine are fragments of the nodular grains that were recrystallized in a metamorphic process. In contrast to the magmatic grains, these metamorphic (that is non-magmatic) chromite and olivine grains are characterized by the presence of inclusions of lizardite, brucite, chlorite, talc, actinolite, uvarovitic garnet, and magnetite. This occurrence suggests that the high-pressure metamorphism was not coeval with the chrornitite formation but occurred later as an independent event, with chromitite formation and high-pressure metamorphism separated by passage to near-surface conditions. There, lizardite grew, now occurring as inclusions in the preserved high-pressure metamorphic minerals. Serpentinization took place in the shallow crust, prior to the highpressure metamorphism.
WOS关键词OCEANIC UPPER-MANTLE ; ZANGBO SUTURE ZONE ; PODIFORM CHROMITITES ; GARNET PERIDOTITES ; PROGRESSIVE METAMORPHISM ; PETROLOGICAL INTEREST ; ULTRAMAFIC ROCKS ; PHASE-RELATIONS ; OPHIOLITE ; MINERALS
WOS研究方向Geology
语种英语
WOS记录号WOS:000333945400013
出版者AMER JOURNAL SCIENCE
资助机构Natural Science Foundation of China(41173042 ; Natural Science Foundation of China(41173042 ; Natural Science Foundation of China(41173042 ; Natural Science Foundation of China(41173042 ; Chinese Academy of Sciences(XDB03010200) ; Chinese Academy of Sciences(XDB03010200) ; Chinese Academy of Sciences(XDB03010200) ; Chinese Academy of Sciences(XDB03010200) ; Chinese Ministry of Science and Technology(2009CB825001) ; Chinese Ministry of Science and Technology(2009CB825001) ; Chinese Ministry of Science and Technology(2009CB825001) ; Chinese Ministry of Science and Technology(2009CB825001) ; ARC(DP0987731) ; ARC(DP0987731) ; ARC(DP0987731) ; ARC(DP0987731) ; 40873025) ; 40873025) ; 40873025) ; 40873025) ; Natural Science Foundation of China(41173042 ; Natural Science Foundation of China(41173042 ; Natural Science Foundation of China(41173042 ; Natural Science Foundation of China(41173042 ; Chinese Academy of Sciences(XDB03010200) ; Chinese Academy of Sciences(XDB03010200) ; Chinese Academy of Sciences(XDB03010200) ; Chinese Academy of Sciences(XDB03010200) ; Chinese Ministry of Science and Technology(2009CB825001) ; Chinese Ministry of Science and Technology(2009CB825001) ; Chinese Ministry of Science and Technology(2009CB825001) ; Chinese Ministry of Science and Technology(2009CB825001) ; ARC(DP0987731) ; ARC(DP0987731) ; ARC(DP0987731) ; ARC(DP0987731) ; 40873025) ; 40873025) ; 40873025) ; 40873025) ; Natural Science Foundation of China(41173042 ; Natural Science Foundation of China(41173042 ; Natural Science Foundation of China(41173042 ; Natural Science Foundation of China(41173042 ; Chinese Academy of Sciences(XDB03010200) ; Chinese Academy of Sciences(XDB03010200) ; Chinese Academy of Sciences(XDB03010200) ; Chinese Academy of Sciences(XDB03010200) ; Chinese Ministry of Science and Technology(2009CB825001) ; Chinese Ministry of Science and Technology(2009CB825001) ; Chinese Ministry of Science and Technology(2009CB825001) ; Chinese Ministry of Science and Technology(2009CB825001) ; ARC(DP0987731) ; ARC(DP0987731) ; ARC(DP0987731) ; ARC(DP0987731) ; 40873025) ; 40873025) ; 40873025) ; 40873025) ; Natural Science Foundation of China(41173042 ; Natural Science Foundation of China(41173042 ; Natural Science Foundation of China(41173042 ; Natural Science Foundation of China(41173042 ; Chinese Academy of Sciences(XDB03010200) ; Chinese Academy of Sciences(XDB03010200) ; Chinese Academy of Sciences(XDB03010200) ; Chinese Academy of Sciences(XDB03010200) ; Chinese Ministry of Science and Technology(2009CB825001) ; Chinese Ministry of Science and Technology(2009CB825001) ; Chinese Ministry of Science and Technology(2009CB825001) ; Chinese Ministry of Science and Technology(2009CB825001) ; ARC(DP0987731) ; ARC(DP0987731) ; ARC(DP0987731) ; ARC(DP0987731) ; 40873025) ; 40873025) ; 40873025) ; 40873025)
源URL[http://ir.iggcas.ac.cn/handle/132A11/85956]  
专题中国科学院地质与地球物理研究所
通讯作者Yang, Jian-jun
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Univ Melbourne, Sch Earth Sci, Melbourne, Vic 3010, Australia
4.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Beijing 100083, Peoples R China
5.China Univ Geosci, Sch Earth Sci & Mineral Resources, Beijing 100083, Peoples R China
推荐引用方式
GB/T 7714		 Huang, Meng-xi,Yang, Jian-jun,Powell, Roger,et al. HIGH-PRESSURE METAMORPHISM OF SERPENTINIZED CHROMITITE AT LUOBUSHA (SOUTHERN TIBET)[J]. AMERICAN JOURNAL OF SCIENCE,2014,314(1):400-433.
APA Huang, Meng-xi,Yang, Jian-jun,Powell, Roger,&Mo, Xuanxue.(2014).HIGH-PRESSURE METAMORPHISM OF SERPENTINIZED CHROMITITE AT LUOBUSHA (SOUTHERN TIBET).AMERICAN JOURNAL OF SCIENCE,314(1),400-433.
MLA Huang, Meng-xi,et al."HIGH-PRESSURE METAMORPHISM OF SERPENTINIZED CHROMITITE AT LUOBUSHA (SOUTHERN TIBET)".AMERICAN JOURNAL OF SCIENCE 314.1(2014):400-433.

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来源：地质与地球物理研究所

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