The propagation of seafloor spreading in the southwestern subbasin,South China Sea  

作　　者：LI JiaBiao DING WeiWei WU ZiYin ZHANG Jie DONG ChongZhi 

机构地区：[1]Second Institute of Oceanography,State Oceanic Administration,Hangzhou 310012,China [2]Key Laboratory of Submarine Geosciences,State Oceanography Administration,Hangzhou 310012,China

出　　处：《Chinese Science Bulletin》2012年第24期3182-3191,共10页

基　　金：supported by the National Natural Science Foundation of China (91028006);the National Basic Research Program of China(2007CB411700)

摘　　要：On the basis of the summary of basic characteristics of propagation, the dynamic model of the tectonic evolution in the South-western Subbasin (SWSB), South China Sea (SCS), has been established through high resolution multi-beam swatch bathymetry and multi-channel seismic profiles, combined with magnetic anomaly analysis. Spreading propagates from NE to SW and shows a transition from steady seafloor spreading, to initial seafloor spreading, and to continental rifting in the southwest end. The spreading in SWSB (SCS) is tectonic dominated, with a series of phenomena of inhomogeneous tectonics and sedimentation.On the basis of the summary of basic characteristics of propagation, the dynamic model of the tectonic evolution in the South- western Subbasin （SWSB）, South China Sea （SCS）, has been established through high resolution multi-beam swatch bathymetry and multi-channel seismic profiles, combined with magnetic anomaly analysis. Spreading propagates from NE to SW and shows a transition from steady seafloor spreading, to initial seafloor spreading, and to continental rifting in the southwest end. The spread- ing in SWSB （SCS） is tectonic dominated, with a series of phenomena of inhomogeneous tectonics and sedimentation.

关 键 词：西南地区 海底扩张 南海海盆 中国南海 传播 构造演化 动态模型 地震剖面 

分 类 号：P736.1[天文地球—海洋地质]