Tectonic and Seismic Interpretation of Line NH973-1 along Southwest Sub-Basin in South China Sea
详细信息
- 责任者：Zhao Changyu (School of Geophysics & Information Technology ; China University of Geosciences ; Beijing 100083 ; China) ; Song Haibin
- 刊名：Chinese Journal of Geophysics
- 出版年：2011
- 卷期：54(12)
- 关键词：地震剖面 ; seismic profiles ; 过渡带 ; transition zones ; 海底扩张 ; sea-floor spreading ; 南海 ; South China Sea
- 页码：p.3258-3268
- 图表：7 illus., 1 table, 53 refs.
- 分类号：0300
- issnNo：ISSN0001-5733
- isbnNo：CN11-2074/P
摘要
The authors interpreted the new 2D multi-channel seismic profile line NH973-1 which crossed southwest sub-basin of South China Sea (SCS). The preliminary analyses are as follows: 1) the authors observed the thick sedimentary body beneath the abyssal plain at the southern end of southwestern sub-basin, considered that continental crust exists beneath the thick sedimentary body, and the toe of southern continental slope is not the COB (continental and oceanic crust boundary), but is in COT (continental and oceanic crust transition) zone; and 2) there are two types of oceanic crust basement, which reflects different spreading rate, magmatism, and deformation for different stages of seafloor spreading.