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

doi:10.1016/j.precamres.2019.04.019

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 岩石圈演化国家重点实验室

	Amphibolite facies metamorphism and geochronology of the Paleoproterozoic Aketashitage Orogenic Belt, northwestern China
	Zhang, Qian W. L.1; Liu, Jia-Hui 1; Wang, Hao Y. C.2; Shi, Meng-Yan 1; Chen, Yi-Chao 1; Li, Zhen M. G.1; Zhang, Hui C. G.1; Pham, Van-Tho 1; Wu, Chun-Ming 1
刊名	PRECAMBRIAN RESEARCH
	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
DOI	10.1016/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.
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
WOS研究方向	Geology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000470941100010
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
内容类型	期刊论文
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.