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DOI	10.1016/j.tecto.2013.11.015
	Early Mesozoic tectonic settings of the northern North China craton
	Meng, Qing-Ren; Wei, Hong-Hong; Wu, Guo-Li; Duan, Liang
通讯作者	Meng, QR (通讯作者)
发表日期	2014
ISSN	0040-1951
EISSN	1879-3266
起始页码	155
结束页码	166
卷号	611
英文摘要	This paper aims to reconstruct early Mesozoic tectonic settings of the northern North China craton based on investigations of Triassic-Middle Jurassic successions and age determinations of some lithostratigraphic units and dikes cutting tilted early Mesozoic strata. It used to be regarded that the northern North China craton experienced fold-thrust deformations in the Triassic to Early Jurassic based on the occurrences of unconformity beneath Triassic/Lower Jurassic units, synorogenic conglomerate, and Late Triassic thrusting. We revisited early Mesozoic stratigraphy of the Xiabancheng basin in the middle Yanshan belt to restore tectonic environments during that period of time. Detrital zircon data reveal that the Liujiagou and Ermaying Formations are actually of Middle and Late Triassic ages, respectively. Field observations show that the Ermaying and Xingshikou Formations are conformable, making up a sequence from fluvial to alluvial-fan facies. It is also noticeable that Lower-Middle Jurassic Xingshikou through Xiahuayuan succession is typified by fining- and deepening-upward depositional trend and contains abundant volcaniclastic rocks, indicative of continued subsidence of the Xiabancheng basin in a volcanic setting. All the results cast doubts on the long-held view that the first phase of shortening in the northern North China craton happened in the Late Triassic or Early Jurassic. The angular unconformity beneath Upper Jurassic Tiaojishan volcanics registered shortening in the northern North China craton, which plausibly took place around 170 Ma on account of zircon U-Pb ages of two dikes penetrating deformed Middle Triassic-Lower Jurassic strata and ages of Tiaojishan volcanics above the unconformity. Given the widespread occurrence of magmatism, rift basins and metamorphic core complexes during the Triassic and Early Jurassic, it follows that the northern North China craton was more likely under an extensional setting during the early Mesozoic. (C) 2013 Elsevier B.V. All rights reserved.
关键词	METAMORPHIC CORE COMPLEX THRUST BELT TUCHENGZI FORMATION XIABANCHENG BASIN HEBEI PROVINCE INNER-MONGOLIA YANSHAN BELT EVOLUTION MARGIN AGE
英文关键词	Northern North China craton; Yanshan belt; Early Mesozoic; Unconformity; Tectonic setting
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:000330493500011
来源期刊	TECTONOPHYSICS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258255
推荐引用方式 GB/T 7714	Meng, Qing-Ren,Wei, Hong-Hong,Wu, Guo-Li,et al. Early Mesozoic tectonic settings of the northern North China craton[J]. 中国科学院青藏高原研究所,2014,611.
APA	Meng, Qing-Ren,Wei, Hong-Hong,Wu, Guo-Li,&Duan, Liang.(2014).Early Mesozoic tectonic settings of the northern North China craton.TECTONOPHYSICS,611.
MLA	Meng, Qing-Ren,et al."Early Mesozoic tectonic settings of the northern North China craton".TECTONOPHYSICS 611(2014).