Structures of the northeasternmost South China Sea continental margin and ocean basin: geophysical constraints and tectonic implications
Structures of the northeasternmost South China Sea continental margin and ocean basin: geophysical constraints and tectonic implications
复制标题
南海最东北部大陆边缘和洋盆的结构：地球物理约束和构造意义
DOI：
10.1007/s11001-007-9014-9
复制
发表时间：
2007-03
期刊：
影响因子：
--
通讯作者：
中科院分区：
文献类型：
--
作者：
南海东北部是一个特殊的构造区。最近对该地区中生代的钻探和新的反射地震调查都提供了大量数据，促进了对大陆边缘盆地和区域构造演化的新认识。台南盆地北方坳陷至少发育四个半地堑，其南部边缘均以北西倾断层为界。其中一个最大的半地堑位于中央隆起的北部，并显示出从渐新世晚期到中新世晚期的幕式隆起。在此期间，中央隆起部分地充当了台南盆地南部凹陷的物质来源。台南盆地南部坳陷是一个深基底（深达海平面以下9km或海底以下6km）和厚新生代沉积（厚度> 6km）的海槽构造。在南部凹陷之下，我们在代表重要地壳断层的地壳层内发现了一个强烈的向陆地倾斜的反射层。该反射体与地壳厚度和莫霍面深度的尖锐边界相吻合。南海东北部盆地可能经历了晚中生代以来独特的演化过程，它与南海中部盆地和华南东部盆地在地质和构造上都有明显的不同。该地区的新生代演化在很大程度上受到由于构造继承和转换而产生的先前存在的弱点的影响。新生代南海经历了多期伸展作用。
The northeastern part of the South China Sea is a special region in many aspects of its tectonics. Both recent drilling into the Mesozoic and new reflection seismic surveys in the area provide a huge amount of data, fostering new understanding of the continental margin basins and regional tectonic evolution. At least four half-grabens are developed within the Northern Depression of the Tainan Basin, and all are bounded on their southern edges by northwestward-dipping faults. One of the largest half-grabens is located immediately to the north of the Central Uplift and shows episodic uplift from the late Oligocene to late Miocene. Also during that period, the Central Uplift served in part as a material source to the Southern Depression of the Tainan Basin. The Southern Depression of the Tainan Basin is a trough structure with deep basement (up to 9 km below sealevel or 6 km beneath the sea bottom) and thick Cenozoic sedimentation (>6 km thick). Beneath the Southern Depression we identified a strong landward dipping reflector within the crustal layer that represents a significant crustal fault. This reflector coincides with a sharp boundary in crustal thicknesses and Moho depths. We show that the northeasternmost South China Sea basin, which may have undergone unique evolution since the late Mesozoic, is markedly different from the central South China Sea basin and the Huatung Basin, both geologically and geophysically. The Cenozoic evolution of the region was largely influenced by pre-existing weaknesses due to tectonic inheritance and transition. The South China Sea experienced multiple stages of Cenozoic extension.
登录
查看更多内容
影响因子：
2.9
作者：
Y. Pin;Z. Di;Zhao-shu Liu
通讯作者：
Y. Pin;Z. Di;Zhao-shu Liu
DOI：
10.1144/gsl.sp.2003.219.01.04
发表时间：
2003
期刊：
Geological Society, London, Special Publications
影响因子：
--
作者：
P. Clift;H. Schouten;A. Draut
通讯作者：
P. Clift;H. Schouten;A. Draut
影响因子：
--
作者：
D. Hayes;S. Nissen;P. Buhl;J. Diebold;Yao Bochu;W. Zeng;Yong-shun Chen
通讯作者：
D. Hayes;S. Nissen;P. Buhl;J. Diebold;Yao Bochu;W. Zeng;Yong-shun Chen
影响因子：
2.9
作者：
A. Chemenda;R. Yang;J. Stephan;E. Konstantinovskaya;Gennady M. Ivanov
通讯作者：
A. Chemenda;R. Yang;J. Stephan;E. Konstantinovskaya;Gennady M. Ivanov
影响因子：
3.5
作者：
Ke Ru;J. Pigott
通讯作者：
Ke Ru;J. Pigott