摘要
塔里木西南部白垩纪－早第三纪沉积特征表现为５次海进－海退旋回。由于印度板块向北俯冲及随后对塔里木盆地的持续性挤压，造成塔里木周缘的挠曲下沉，同时古特提斯海水从西部侵入盆地，形成相应的沉积旋回。白垩纪－早第三纪塔西南盆地的沉积－构造演化可划分为两个主要阶段：早白垩世为继承性走滑－断陷盆地；晚白垩世－早第三纪为前陆盆地发展阶段。
According to the lithological characters and the evolution of sc(limentation, five transgression-regression cycles Can be distingguished from the Cretuceous to the Paleogene on the southwestern margin of the Tarim basin. The evolution of the southwest Tarim basin was controlled by the Taras-Fergana fault and the northward subduction of the Indian plate during K-E. A comparative stady of the sedimentary sequences on both sides of the southwestern margin of the Tarim basin ,indicated that. The Sedimenfory-ectonic evolution of the southwest Tarim Basin may be divided intO two stages: The firSt stage was in Early Cretaceous, during which the inherited Strike-slip faultdown basin was formed, and the second sarge was from hate Cretuceous to Paleogene, when the foreland basin was developed with the invasion of the sea water of Tethys.
基金
中国地质科学院地质研究所与美国斯坦福大学地质系合作项目
