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Discovery and thermodynamic characteristics of high-grade metamorphic rock series along the south of Yantan fault in Beishan, Xinjiang and its tectonic significance
Li YongShou1,2; Yang XingKe3; Ma HaiZhou1
2016-06-01
Source PublicationACTA PETROLOGICA SINICA
Volume32Issue:6Pages:1688-1698
SubtypeArticle
AbstractThe high-grade metamorphic rock series, representing metamorphic product in the middle-lower crust, was first found in south of Yantan fault of Beishan, Xinjiang. It is consisted of plagioclase-gneiss, migmatites, amphibolites and a small quantity of granulites. Through detailed field survey, petrography mineral-chemical study, find that the basic granulite is consisted of diopsides, hypersthenes, brown homblendes and labradmites. It has an evolution from the granulite facies rocks into amphibolite facies rocks by retrograde metamorphic reactions. Research shows that, the clinopyroxenes and homblendes of those granulites in this area have metamorphic genetic, the clinopyroxene is formed in high pressure environment and the hornblendes formed in the middle and low-pressure environment. Based on mineral geothermobaromemter, the metamorphism P-T conditions of the granulite facies is 1. 25GPa (42km depth), the temperature is about 841 degrees C, and the range of retrograde metamorphism temperature of amphibolite facies should be 650 similar to 657 degrees C, the pressure is 0.460 similar to 0. 495GPa ( middle and low-pressure, 16. 5km depth). The discovery of the granulite-facies stratum in this area has an important significance on further study of formation and structure of deeper crust in the area and continental geodynamic mechanism in Xinjiang, China.
KeywordHigh-grade Metamorphic Rock Series Middle And Low-pressure Mafic Granulites Geneticmineralogy P-t Condition Beishan Xinjiang
WOS HeadingsScience & Technology ; Physical Sciences
WOS KeywordHIGH-PRESSURE GRANULITES ; GEOLOGICAL SIGNIFICANCE ; MOLDANUBIAN ZONE ; MAFIC GRANULITES ; EAST ANTARCTICA ; BOHEMIAN MASSIF ; GROVE MOUNTAINS ; OROGENIC BELT ; T PATH ; CHINA
Indexed BySCI
Language英语
WOS Research AreaGeology
WOS SubjectGeology
WOS IDWOS:000379796600009
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/6339
Collection青海盐湖研究所知识仓储
盐湖地质与环境实验室
Affiliation1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Salt Lake Resources & Chem, Xining 810008, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Changan Univ, MOE Key Lab Western Chinas Mineral Resources & Ge, Earth Sci & Resources Coll, Xian 710054, Peoples R China
Recommended Citation
GB/T 7714
Li YongShou,Yang XingKe,Ma HaiZhou. Discovery and thermodynamic characteristics of high-grade metamorphic rock series along the south of Yantan fault in Beishan, Xinjiang and its tectonic significance[J]. ACTA PETROLOGICA SINICA,2016,32(6):1688-1698.
APA Li YongShou,Yang XingKe,&Ma HaiZhou.(2016).Discovery and thermodynamic characteristics of high-grade metamorphic rock series along the south of Yantan fault in Beishan, Xinjiang and its tectonic significance.ACTA PETROLOGICA SINICA,32(6),1688-1698.
MLA Li YongShou,et al."Discovery and thermodynamic characteristics of high-grade metamorphic rock series along the south of Yantan fault in Beishan, Xinjiang and its tectonic significance".ACTA PETROLOGICA SINICA 32.6(2016):1688-1698.
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