Vast early Miocene lakes of the central Tibetan Plateau

CORC > 中国地质调查局 > 中国地质调查局

	Vast early Miocene lakes of the central Tibetan Plateau
	Wu, ZH (Wu Zhenhan); Barosh, PJ (Barosh, Patrick J.); Wu, ZH (Wu Zhonghai); Hu, DG (Hu Daogong); Xun, Z (Xun, Zhao); Ye, PS (Ye Peisheng)
刊名	GEOLOGICAL SOCIETY OF AMERICA BULLETIN
	2008
卷号	120 期号:9-10 页码:1326-1337
关键词	Wudaoliang Group lacustrine strata vast lakes Miocene spores and pollen paleoclimate early Miocene central Tibetan Plateau Miocene topography
ISSN号	0016-7606
英文摘要	Lacustrine strata of the Wudaoliang Group demonstrate that two vast lake complexes covered the central Tibetan Plateau during early Miocene time. The Wudaoliang Group, which is characterized by dolostone, limestone, and marl as thick as 310-350 m, lies horizontally or with a slight dip above Oligocene reddish-brown sandstone, and is covered by upper Miocene and Pliocene mudstone and sandstone. The extensive distribution of this group outlines interconnected lake basins of 5000-15,000 km(2) or larger in the north-central Tibetan Plateau, such as the Wudaoliang, Beiluhe, Tuotuohe, Tongtianhe, and East Wenquan Basins, and lake basins 2000 km(2) or larger in the south-central plateau, such as the Ando, Naqu, Bangoin, Lunpola, and Shuanghu Basins. These lake basins, separated by mountain ranges and islands, were linked by water passages in early Miocene time, when they apparently formed a huge lake complex that covered as much as 100,000 km(2) in the north-central Tibetan Plateau and another one >50,000 km(2) in the south-central part of the plateau. Such immense lakes existed for several million years between ca. 23.5 and ca. 13.5 Ma after the Tibetan Plateau rose, and their interconnected basins define the topography during early Miocene time. The fossils contained in these basins indicate a change from the warm, dry climate of the Oligocene to moderately cool and wet conditions at the beginning of the early Miocene, followed by progressive cooling and drying, which suggests continuous uplift during deposition of the Wudaoliang Group.
学科主题	地层学与地史学
WOS关键词	GOLMUD-LHASA RAILWAY ; SOUTHERN TIBET ; TECTONIC EVOLUTION ; SHEAR ZONE ; REGION ; HISTORY ; VOLCANISM ; CHINA ; CRUST
WOS研究方向	Geology
语种	英语
出版者	GEOLOGICAL SOC AMER, INC
WOS记录号	WOS:000258934900015
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/38779]
专题	中国地质调查局
作者单位	Chinese Acad Geol Sci, Beijing 100037, Peoples R China
推荐引用方式 GB/T 7714	Wu, ZH ,Barosh, PJ ,Wu, ZH ,et al. Vast early Miocene lakes of the central Tibetan Plateau[J]. GEOLOGICAL SOCIETY OF AMERICA BULLETIN,2008,120(9-10):1326-1337.
APA	Wu, ZH ,Barosh, PJ ,Wu, ZH ,Hu, DG ,Xun, Z ,&Ye, PS .(2008).Vast early Miocene lakes of the central Tibetan Plateau.GEOLOGICAL SOCIETY OF AMERICA BULLETIN,120(9-10),1326-1337.
MLA	Wu, ZH ,et al."Vast early Miocene lakes of the central Tibetan Plateau".GEOLOGICAL SOCIETY OF AMERICA BULLETIN 120.9-10(2008):1326-1337.