中国地质2011，Vol.38Issue(3)：537-543,7.
南海西缘断裂带走滑特征及其形成机理初步研究
A tentative discussion on strike-slipping character and formation mechanism of western-edge fault belt in South China Sea
摘要
Abstract
The western-edge fault belt is the most dominating structure element in the west of South China Sea.It runs through the main sedimentary basins from north to south and has the property of strike-slip fault.The western-edge fault belt forms different arrangements of faults because of diverse strike-slipping directions at various geological times.Faults arrangements consist of negative flower structure, two groups en-echelon faults of northeast and northwest strike and double hone-tail shaped structttre associations in plane.The main fault of the western-edge fault belt is of single stripe pattern and evident segrnentation movement.Faults character of transform belts between north and south stepover zones is the compounding of negative flower structure, listric normal fault and dominoes reversing adjusting normal fault.According to an integrated analysis, the western-edge fault belt of South China Sea is considered as an long-active fault belt, and its strike-slip movement took place from middle Eocene to Quaternary.The movement of the western-edge fault belt was mainly fight-lateral with extension-wrest stress, but during the end of middle Miocene, the direction of strike-slip movement changed to left lateral with extrusion-wrest stress, which resulted in regional strata uplift and erosion.Under these actions, the pattern of current sediment and structure was formed basically in the western basins of South China Sea.关键词
南海西缘断裂带/走滑断裂/分段式活动/构造转换带Key words
western-edge fault belt of South China Sea/ strike-slip fault/ segmentation/ transform belt分类
天文与地球科学引用本文复制引用
高红芳..南海西缘断裂带走滑特征及其形成机理初步研究[J].中国地质,2011,38(3):537-543,7.基金项目
国家专项海洋地质保障工程项目(GZH200800502)资助. （GZH200800502）
