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Amphibolite facies metamorphism and geochronology of the Paleoproterozoic Aketashitage Orogenic Belt, northwestern China

文献类型：期刊论文

作者Zhang, Qian W. L.1; Liu, Jia-Hui1; Wang, Hao Y. C.2; Shi, Meng-Yan1; Chen, Yi-Chao1; Li, Zhen M. G.1; Zhang, Hui C. G.1; Pham, Van-Tho1; Wu, Chun-Ming1
刊名PRECAMBRIAN RESEARCH
出版日期2019-07-15
卷号328页码:146-160
关键词The Aketashitage Orogenic Belt Paleoproterozoic Metamorphic evolution Geochronology
ISSN号0301-9268
DOI10.1016/j.precamres.2019.04.019
英文摘要Garnet amphibolite and semi-pelitic gneiss preserving three stages of metamorphic mineral assemblages, i.e., the prograde metamorphic inclusion assemblage (M1) preserved in the garnet porphyroblast, metamorphic peak assemblage (M2) and retrograde symplectic assemblage (M3), have been recognized in the Aketashitage area, northwestern China. Geothermobarometric computation shows that the M1, M2 and M3 assemblages record the metamorphic P-T conditions of 600-700 degrees C/4.2-5.3 kbar, 730-790 degrees C/6.3-7.1 kbar, and 770 degrees C/5.6 kbar, respectively. These three metamorphic stages define clockwise P-T paths including nearly isothermal decompression (ITD) process, indicating typical orogenic metamorphism. The peak metamorphic P-T conditions reach the transition zone between the high amphibolite fades and granulite facies, and belong to intermediate P/T facies series. The SHRIMP and LA-ICP-MS U-Pb dating of metamorphic zircon implies that the subduction might occur as early as similar to 1.97 Ga and last as late as 1.84 Ga. Combined with literature data, it is concluded that the Aketashitage area was a Paleoproterozoic orogenic belt, which is possibly related to the assembly of the basements of the Columbia supercontinent.
WOS关键词ZIRCON U-PB ; TEMPERATURE-TIME PATHS ; NORTHERN ALTYN-TAGH ; SUBDUCTION-RELATED MAGMATISM ; HF ISOTOPIC CHARACTERISTICS ; ARCHEAN CONTINENTAL-CRUST ; NORTHEASTERN TARIM CRATON ; HIGH-GRADE METAMORPHISM ; T-T PATHS ; DUNHUANG BLOCK
资助项目National Natural Science Foundation of China[41730215] ; Key Research Program of Frontier Sciences from Chinese Academy of Sciences[QYZDJ-SSW-DQC036]
WOS研究方向Geology
语种英语
WOS记录号WOS:000470941100010
出版者ELSEVIER SCIENCE BV
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences from Chinese Academy of Sciences ; Key Research Program of Frontier Sciences from Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences from Chinese Academy of Sciences ; Key Research Program of Frontier Sciences from Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences from Chinese Academy of Sciences ; Key Research Program of Frontier Sciences from Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences from Chinese Academy of Sciences ; Key Research Program of Frontier Sciences from Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/92547]  
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Wu, Chun-Ming
作者单位1.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, POB 4588, Beijing 100049, Peoples R China
2.Chinese Acad Sci, State Key Lab Lithospher Evolut, Inst Geol & Geophys, POB 9825, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Qian W. L.,Liu, Jia-Hui,Wang, Hao Y. C.,et al. Amphibolite facies metamorphism and geochronology of the Paleoproterozoic Aketashitage Orogenic Belt, northwestern China[J]. PRECAMBRIAN RESEARCH,2019,328:146-160.
APA Zhang, Qian W. L..,Liu, Jia-Hui.,Wang, Hao Y. C..,Shi, Meng-Yan.,Chen, Yi-Chao.,...&Wu, Chun-Ming.(2019).Amphibolite facies metamorphism and geochronology of the Paleoproterozoic Aketashitage Orogenic Belt, northwestern China.PRECAMBRIAN RESEARCH,328,146-160.
MLA Zhang, Qian W. L.,et al."Amphibolite facies metamorphism and geochronology of the Paleoproterozoic Aketashitage Orogenic Belt, northwestern China".PRECAMBRIAN RESEARCH 328(2019):146-160.

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来源：地质与地球物理研究所

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