Cretaceous tectonic evolution of South China: A preliminary synthesis

doi:10.1016/j.earscirev.2014.03.008

CORC > 中国地质调查局 > 中国地质调查局 > 中国地质科学院地质力学研究所

	Cretaceous tectonic evolution of South China: A preliminary synthesis
	Li, Jianhua 3; Zhang, Yueqiao ; Dong, Shuwen ; Johnston, Stephen T.
刊名	EARTH-SCIENCE REVIEWS
	2014
卷号	134 页码:98-136
关键词	South China Cretaceous Tectonic evolution Basin Magmatism Paleo-Pacific Plate
ISSN号	0012-8252
DOI	10.1016/j.earscirev.2014.03.008
英文摘要	The Cretaceous tectonic evolution of South China is characterized by widespread extensional basin and dome generation, voluminous magma intrusion/eruption and associated polymetallic mineralization, all of which are of world-wide interests that have stimulated the attention of geologists for more than half a century. Due to the lack of a comprehensive understanding of regional tectonic evolution and geodynamics of South China, many controversies regarding the nature and origin of these features remain. This paper attempts to make a review by synthesizing existing structural, petrological, geochronological and geochemical data of the Cretaceous structures and magmas, which guides us to propose a three-stage tectono-thermal evolutionary history of South China during the Cretaceous period. The earliest Cretaceous (145-137 Ma) tectonic stage was characterized by syn-orogenic shortening deformation and metamorphism under a NW-SE compressional setting, which generated voluminous porphyry Cu-Au ore-bearing adakitic rocks in the Lower Yangtze River Belt and gneissic granites in the coastal area. Its geodynamic origin was interpreted as combined effects of the PacificIzanagi ridge subduction beneath the Lower Yangtze River Belt and the Pacific subduction beneath the Cathaysia Block. This syn-orogenic shortening stage was followed by a post orogenic stage (136-86 Ma) comprising two episodes of alternate extensional and shortening events. The extension (136-118 Ma) in the earlier episode was dominated by a NW-SE extensional regime, it led to significant taphrogenesis manifested by large-scale extensional basins and voluminous magma intrusion/eruption: this extensional event was associated with a combination of the slab window opening during the ridge subduction and the rollback of the subducted Pacific slab. The subsequent NW-SE transpressional event led to cessation of active marginal magmatism and resulted in tectonic inversion of previous rift basins: this transpression lasted from 117 Ma to 108 Ma, and its driving mechanism was attributed to the collision between the eastern Asian margin and the West Philippine Block. The extension (107-86 Ma) in the later episode was dominated by a WNW-ESE extensional regime, which led to a second phase of basin subsidence and produced numerous A- and I-type granites and bimodal volcanoes. The tectonic regime then changed at ca. 85 Ma to WNW-ESE-oriented transpression, causing inversion of the Late Cretaceous rift basins and cessation of extension-related magmatism. The change of stress field from WNW-ESE extension to WNW-ESE transpression was related to the variations of the subducted slab dynamics, i.e., the transition from either the ESE-ward retreat to WNW-ward subduction of the Pacific slab, or the alternate stress during slab break-off. During the latest Cretaceous, a drastic change of regional tectonic stress orientation from WNW-ESE to N-S occurred in South China, the third stage predominated by N-S extension was developed, which caused a new phase of regional crustal subsidence along the youngest E-W trending extensional structures. (C) 2014 Elsevier B.V. All rights reserved.
学科主题	地层学与地史学
WOS关键词	ZIRCON U-PB ; A-TYPE GRANITES ; FUJIAN PROVINCE CONSTRAINTS ; METAMORPHIC CORE COMPLEXES ; ADAKITIC INTRUSIVE ROCKS ; CRUST-MANTLE INTERACTION ; HF ISOTOPIC COMPOSITION ; MESOZOIC IGNEOUS ROCKS ; ANGLE NORMAL FAULTS ; YANGTZE-RIVER BELT
WOS研究方向	Geology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000337855800005
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/40602]
专题	中国地质科学院地质力学研究所
作者单位	1.Chinese Acad Geol Sci, Inst Geomech, Beijing 100081, Peoples R China 2.Johnston, Stephen T.] Univ Victoria, Sch Earth & Ocean Sci, STN CSC, Victoria, BC V8W 2Y2, Canada 3.中国地质科学院地质力学研究所
推荐引用方式 GB/T 7714	Li, Jianhua,Zhang, Yueqiao,Dong, Shuwen,et al. Cretaceous tectonic evolution of South China: A preliminary synthesis[J]. EARTH-SCIENCE REVIEWS,2014,134:98-136.
APA	Li, Jianhua,Zhang, Yueqiao,Dong, Shuwen,&Johnston, Stephen T..(2014).Cretaceous tectonic evolution of South China: A preliminary synthesis.EARTH-SCIENCE REVIEWS,134,98-136.
MLA	Li, Jianhua,et al."Cretaceous tectonic evolution of South China: A preliminary synthesis".EARTH-SCIENCE REVIEWS 134(2014):98-136.