Morphological Features and Formation Mechanism of <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" /><st1:PlaceName w:st="on">Central</st1:PlaceName> <st1:PlaceType w:st="on">Canyon</st1:PlaceType> in the <st1:PlaceName w:st="on">Qiongdongnan</st1:PlaceName> <st1:PlaceType w:st="on">Basin</st1:PlaceType>, <st1:place w:st="on">Northern South China Sea</st1:place> <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p>

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Morphological Features and Formation Mechanism of Central Canyon in the Qiongdongnan Basin, Northern South China Sea

详细信息

责任者：Su Ming (Key Laboratory of Tectonics and Petroleum Resources ; MOE ; Faculty of Earth Resources ; China University of Geosciences ; Wuhan 430074 ; China) ; Li Junliang
刊名：Marine Geology & Quaternary Geology
出版年：2009
卷期：29(4)
关键词：海底峡谷 ; submarine canyons ; 琼东南盆地 ; Qiongdongnan Basin
页码：p.85-93
图表：7 illus., 1 table, 18 refs.
分类号：0200
issnNo：ISSN0256-1492
isbnNo：CN37-1117/P

摘要

The Central Canyon in the Qiongdongnan Basin, northern South China Sea, with an “S-shaped” geometry, trends NE across the Ledong-Lingshui, Songnan, Baodao and Changchang depressions. According to the morphology, filling and stratigraphic architectures, the Central Canyon can be divided into 4 types in shape: V, U, W, and complex types, and 3 segments in area: eastern, western and transfer segments. The origin of the filling in the Central Canyon can be ascribed to the gravity sediment. At each stage, the generation of the Central Canyon was simultaneous to or a little earlier than that of synchronous slope. It can be proposed that the Canyon formed initially at the east of Qiongdongnan Basin and spread westwards gradually.

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