Paleoproterozoic UHT metamorphism in the Daqingshan Terrane, North China Craton: New constraints from phase equilibria modeling and SIMS U-Pb zircon dating

doi:10.1016/j.precamres.2017.03.024

	Paleoproterozoic UHT metamorphism in the Daqingshan Terrane, North China Craton: New constraints from phase equilibria modeling and SIMS U-Pb zircon dating
	Jiao, Shujuan 1,2; Fitzsimons, Ian C. W.2; Guo, Jinghui 1
刊名	PRECAMBRIAN RESEARCH
	2017-12-01
卷号	303 页码:208-227
关键词	Sapphirine Ultrahigh-temperature (Uht) Metamorphism Pseudosection Zircon Khondalite Belt North China Craton
ISSN号	0301-9268
DOI	10.1016/j.precamres.2017.03.024
文献子类	Article
英文摘要	The P-T-t path and tectonic setting of Paleoproterozoic UHT metamorphism in the Khondalite Belt of the North China Craton are controversial, but important new constraints are provided by phase equilibria modeling and SIMS U-Pb dating of Grt-Sil-Spl-Spr granulites from the Dongpo locality. These metape-litic granulites are composed of garnet, sillimanite, plagioclase, biotite, spinel, sapphirine, rutile, ilmenite, and rare cordierite, but lack quartz and K-feldspar. Such refractory whole-rock compositions indicate that the Dongpo granulites had undergone high-grade metamorphism and substantial melt loss prior to peak UHT conditions. Four metamorphic stages are recognized based on petrography, mineral chemistry and reaction analysis. The earliest Ml stage is recorded by cores (zone 1) of garnet porphyroblasts and coarsegrained plagioclase, sillimanite, biotite and spinel in the matrix. This was overprinted by the M2 assemblage comprising the mantles (inner zone 2) of garnet porphyroblasts, Spr +/- Spl + Pl intergrowths, and sapphirine coronas that surround spinel, and then by the development of Sil + Bt and outermost zone 2 of Grt(3) (M3) and minor Crd + Ilm (M4). Pseudosections calculated for different effective bulk compositions constrain the P-T conditions of M1 to ca. 9.0-10.0 kbar and 850-920 degrees C, and M2 to 7.3-9.0 kbar and 910-1020 degrees C. If M1-M4 assemblages developed during a single tectonic cycle, these results define a clockwise P-T path comprising M1-M2 decompression heating, followed by M2-M4 cooling and decompression. SIMS U-Pb analysis reveals three generations of metamorphic zircon that show evolving HREE contents consistent with zircon crystallization during or after garnet growth. A poorly defined zircon population at ca. 1.94-1.90 Ga is ascribed to pre-to syn-Ml metamorphism, while ca. 1.85 Ga and <= 1.82 Ga zircon are linked to post-UHT M2-M3 and M3-M4 retrogression respectively. These age data suggest a minimum 50 Myr duration for high-T to UHT metamorphism, consistent with prolonged radiogenic heating in thickened crust, provided that M1 and M2 are part of a single tectonic cycle in which case they are likely to reflect collision and extension respectively. Alternatively, M1 and M2 might be unrelated events, with M2 UHT metamorphism linked to mantle-derived magmatism at least ca. 50 Myr after M1 collisional orogenesis. (c) 2017 Elsevier B.V. All rights reserved.
WOS关键词	ULTRAHIGH-TEMPERATURE METAMORPHISM ; HIGH-GRADE METAMORPHISM ; LA-ICP-MS ; GRANULITE-FACIES METAMORPHISM ; PRESSURE PELITIC GRANULITES ; MAJOR TECTONIC UNITS ; MONGOLIA SUTURE ZONE ; KHONDALITE BELT ; WESTERN BLOCK ; INNER-MONGOLIA
WOS研究方向	Geology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000423004300012
资助机构	National Natural Science Foundation of China(41402168 ; National Natural Science Foundation of China(41402168 ; National Natural Science Foundation of China(41402168 ; National Natural Science Foundation of China(41402168 ; independent project from State Key Laboratory of Lithospheric Evolution, IGGCAS ; independent project from State Key Laboratory of Lithospheric Evolution, IGGCAS ; independent project from State Key Laboratory of Lithospheric Evolution, IGGCAS ; independent project from State Key Laboratory of Lithospheric Evolution, IGGCAS ; Ministry and Science and Technology of China(2016YFC0600109) ; Ministry and Science and Technology of China(2016YFC0600109) ; Ministry and Science and Technology of China(2016YFC0600109) ; Ministry and Science and Technology of China(2016YFC0600109) ; Australian Research Council Discovery Project grant(DP150102773) ; Australian Research Council Discovery Project grant(DP150102773) ; Australian Research Council Discovery Project grant(DP150102773) ; Australian Research Council Discovery Project grant(DP150102773) ; 41672189) ; 41672189) ; 41672189) ; 41672189) ; National Natural Science Foundation of China(41402168 ; National Natural Science Foundation of China(41402168 ; National Natural Science Foundation of China(41402168 ; National Natural Science Foundation of China(41402168 ; independent project from State Key Laboratory of Lithospheric Evolution, IGGCAS ; independent project from State Key Laboratory of Lithospheric Evolution, IGGCAS ; independent project from State Key Laboratory of Lithospheric Evolution, IGGCAS ; independent project from State Key Laboratory of Lithospheric Evolution, IGGCAS ; Ministry and Science and Technology of China(2016YFC0600109) ; Ministry and Science and Technology of China(2016YFC0600109) ; Ministry and Science and Technology of China(2016YFC0600109) ; Ministry and Science and Technology of China(2016YFC0600109) ; Australian Research Council Discovery Project grant(DP150102773) ; Australian Research Council Discovery Project grant(DP150102773) ; Australian Research Council Discovery Project grant(DP150102773) ; Australian Research Council Discovery Project grant(DP150102773) ; 41672189) ; 41672189) ; 41672189) ; 41672189) ; National Natural Science Foundation of China(41402168 ; National Natural Science Foundation of China(41402168 ; National Natural Science Foundation of China(41402168 ; National Natural Science Foundation of China(41402168 ; independent project from State Key Laboratory of Lithospheric Evolution, IGGCAS ; independent project from State Key Laboratory of Lithospheric Evolution, IGGCAS ; independent project from State Key Laboratory of Lithospheric Evolution, IGGCAS ; independent project from State Key Laboratory of Lithospheric Evolution, IGGCAS ; Ministry and Science and Technology of China(2016YFC0600109) ; Ministry and Science and Technology of China(2016YFC0600109) ; Ministry and Science and Technology of China(2016YFC0600109) ; Ministry and Science and Technology of China(2016YFC0600109) ; Australian Research Council Discovery Project grant(DP150102773) ; Australian Research Council Discovery Project grant(DP150102773) ; Australian Research Council Discovery Project grant(DP150102773) ; Australian Research Council Discovery Project grant(DP150102773) ; 41672189) ; 41672189) ; 41672189) ; 41672189) ; National Natural Science Foundation of China(41402168 ; National Natural Science Foundation of China(41402168 ; National Natural Science Foundation of China(41402168 ; National Natural Science Foundation of China(41402168 ; independent project from State Key Laboratory of Lithospheric Evolution, IGGCAS ; independent project from State Key Laboratory of Lithospheric Evolution, IGGCAS ; independent project from State Key Laboratory of Lithospheric Evolution, IGGCAS ; independent project from State Key Laboratory of Lithospheric Evolution, IGGCAS ; Ministry and Science and Technology of China(2016YFC0600109) ; Ministry and Science and Technology of China(2016YFC0600109) ; Ministry and Science and Technology of China(2016YFC0600109) ; Ministry and Science and Technology of China(2016YFC0600109) ; Australian Research Council Discovery Project grant(DP150102773) ; Australian Research Council Discovery Project grant(DP150102773) ; Australian Research Council Discovery Project grant(DP150102773) ; Australian Research Council Discovery Project grant(DP150102773) ; 41672189) ; 41672189) ; 41672189) ; 41672189)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/82444]
专题	中国科学院地质与地球物理研究所
通讯作者	Jiao, Shujuan
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 2.Curtin Univ, Dept Appl Geol, GPO Box U1987, Perth, WA 6845, Australia
推荐引用方式 GB/T 7714	Jiao, Shujuan,Fitzsimons, Ian C. W.,Guo, Jinghui. Paleoproterozoic UHT metamorphism in the Daqingshan Terrane, North China Craton: New constraints from phase equilibria modeling and SIMS U-Pb zircon dating[J]. PRECAMBRIAN RESEARCH,2017,303:208-227.
APA	Jiao, Shujuan,Fitzsimons, Ian C. W.,&Guo, Jinghui.(2017).Paleoproterozoic UHT metamorphism in the Daqingshan Terrane, North China Craton: New constraints from phase equilibria modeling and SIMS U-Pb zircon dating.PRECAMBRIAN RESEARCH,303,208-227.
MLA	Jiao, Shujuan,et al."Paleoproterozoic UHT metamorphism in the Daqingshan Terrane, North China Craton: New constraints from phase equilibria modeling and SIMS U-Pb zircon dating".PRECAMBRIAN RESEARCH 303(2017):208-227.