Mesozoic basin-fill records in south foot of the Dabie Mountains: Implication for Dabie Orogenic attributes

	Mesozoic basin-fill records in south foot of the Dabie Mountains: Implication for Dabie Orogenic attributes
	Li, Z; Li, RW; Sun, S; Zhang, WH
刊名	SCIENCE IN CHINA SERIES D-EARTH SCIENCES
	2003-03-01
卷号	46 期号:3 页码:217-230
关键词	Dabie Mountains Mesozoic post-collisional orogenesis basin-rill sequence detrital composition
ISSN号	1006-9313
文献子类	Article
英文摘要	Five evolutional phases are found from Mesozoic basin-fill sequences in the northern Jianghan basin, the south foot of the. Dabie Mountains: (i) Early Triassic to the early period of Late Triassic showing continental shelf marine and paralic deposits; (ii) the middle-late period of Late Triassic indicating the uplift and erosion in compressional tectonic setting; (iii) the late period of Late Triassic to Early-Middle Jurassic showing peneplain terrestrial and fluvial clastic deposits interlayered with coal-seams; (iv) Late-Jurassic to Early-Cretaceous characterized by cycle fills of acidic volcanic rocks interstratified with pyroclastic rocks in intracontinental extension tectonic regime; (v) a lot of coarse clastic deposits similar to molasses occur in Late-Cretaceous mainly. Based on the compositions of detrital sandstones and conglomerates, combined with the analysis of sedimentary facies, it is indicated that most clasts sourced from the Yangtze continent from phase one to phase three, whose provenances are attributed to "recycled orogenic belt" types. On the other hand, detrital assemblages of the fifth phase deposits are mainly related with pre-Mesozoic metamorphic rocks of the Dabie Mountains, subjected to "arc orogenic belt" provenance types. In the Mesozoic basins of the south foot of the Dabie Mountains, it is proved that there are no direct depositional records corresponding to "Late Triassic syn-collisional orogenesis". Molasse depositional records of Upper Cretaceous distinctly reflect post-collisional orogenesis of the Dabie Mountains (intracontinental orogenesis) and intensive exhumation in extensional tectonic regime. This paper further discusses the inconsistent relations existing between basin-fill records at the south and north feet of the Dabie Mountains and the uplift models of the Dabie Mountains published, and indicates their key problems.
WOS关键词	ULTRAHIGH-PRESSURE METAMORPHISM ; CENTRAL CHINA ; TECTONICS ; TERRANE ; BENEATH ; ROCKS ; BELT ; SHAN
WOS研究方向	Geology
语种	英语
出版者	SCIENCE CHINA PRESS
WOS记录号	WOS:000181672200004
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/78303]
专题	中国科学院地质与地球物理研究所
通讯作者	Li, Z
作者单位	Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Li, Z,Li, RW,Sun, S,et al. Mesozoic basin-fill records in south foot of the Dabie Mountains: Implication for Dabie Orogenic attributes[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2003,46(3):217-230.
APA	Li, Z,Li, RW,Sun, S,&Zhang, WH.(2003).Mesozoic basin-fill records in south foot of the Dabie Mountains: Implication for Dabie Orogenic attributes.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,46(3),217-230.
MLA	Li, Z,et al."Mesozoic basin-fill records in south foot of the Dabie Mountains: Implication for Dabie Orogenic attributes".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 46.3(2003):217-230.