Tectonic uplift and sedimentary evolution of the Jiuxi Basin in the northern margin of the Tibetan Plateau since 13 Ma BP

doi:10.1007/BF02911987

IEECAS OpenIR > 黄土与第四纪地质国家重点实验室（1985-2004）

	Tectonic uplift and sedimentary evolution of the Jiuxi Basin in the northern margin of the Tibetan Plateau since 13 Ma BP
	Song, CH; Fang, XM; Li, JJ; Gao, JP; Zhao, ZJ; Fan, MJ
	2001-10
发表期刊	SCIENCE IN CHINA SERIES D-EARTH SCIENCES
卷号	44 页码:192-202
文章类型	Article
摘要	Sediments shed from the northern margin of the Tibetan Plateau, the Qilian Mountains, are widely deposited in the foreland basin, the Jiuxi Basin, archiving plenty of information about the mountain surface uplift and erosion history. The Laojunmiao section, 1960 m thick, representing the upper sequence of the Cenozoic basin sediments, is paleomagnetically dated to about 13-0 Ma BP. Detailed sedimentary study of this sequence has revealed five sedimentary facies associations which determine four stages of sedimentary environment evolution. They are: (I) the half-deep lake system before 12.18 Ma BP, (II) the shallow lake system between 12.18 and 8.26 Ma BP, (III) the fan delta dominated sedimentary system in dry climate between 8.26 and 6.57 Ma BP, and (IV) alluvial fan system since 6.57 Ma BP. The associated mountain erosion and uplift are suggested to have experienced three phases, that is, tectonic stable (13-8.26 Ma BP), gradual uplift (8.26-<4.96 Ma BP), and rapid intermittent uplift (>3.66-0 Ma BP). The uplift at similar to3.66 Ma BP is of great importance in tectonics and geomorphology. Since then, tectonic uplift and mountain building have been accelerated and become strong intermittent. At least three significant tectonic events took place with ages at <1.80-1.23, 0.93-0.84 and 0.14 Ma BP, respectively. Thus, the uplift of the northern Tibetan Plateau is a complex process of multiple phases, unequal speed and irregular movements.
关键词	sedimentary facies evolution tectonic uplift Hexi Corridor Tibetan Plateau
学科领域	Geology
DOI	10.1007/BF02911987
关键词[WOS]	YELLOW-RIVER ; HIMALAYA
收录类别	SCI ; SCIE
语种	英语
WOS研究方向	Geosciences, Multidisciplinary
WOS记录号	WOS:000175181800023
出版者	SCIENCE CHINA PRESS
引用统计	被引频次：77[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/11913
专题	黄土与第四纪地质国家重点实验室（1985-2004）
推荐引用方式 GB/T 7714	Song, CH,Fang, XM,Li, JJ,et al. Tectonic uplift and sedimentary evolution of the Jiuxi Basin in the northern margin of the Tibetan Plateau since 13 Ma BP[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2001,44:192-202.
APA	Song, CH,Fang, XM,Li, JJ,Gao, JP,Zhao, ZJ,&Fan, MJ.(2001).Tectonic uplift and sedimentary evolution of the Jiuxi Basin in the northern margin of the Tibetan Plateau since 13 Ma BP.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,44,192-202.
MLA	Song, CH,et al."Tectonic uplift and sedimentary evolution of the Jiuxi Basin in the northern margin of the Tibetan Plateau since 13 Ma BP".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 44(2001):192-202.