【摘要】 前晚白垩世，闽浙-朝鲜二古沟-弧系和琉球沟-弧系组成古双俯冲带，东海微板块的构造运动受制于双俯冲带的作用．东海微板块基底和琉球岛弧的南北三分态势，是由于西侧二古为-弧系的不同区段对物质和应力的消减作用存在非均一性，从而在双俯冲带的作用下，导致东海地壳水平运动作差异性调整，而由此产生的NW向断裂分割的结果．更多还原

【Abstract】 Before Upper Cretaceous, the Paleo-Minzhe-the Paleo--Korea trench--arc system and the Ryukyu trench-arc system constitute the old double-subduction zone. The tectonic movement of the East China Sea micro-plate was subjected to the old double-subduction zone. The north south segmentation of the basement of the East China Sea and the Ryukyu trench-arc system,cutted by the NW-trending taults, is of different features in the each Part. Subduction of substance and stress was changed along the different zone of the western old double trench arc systems, such a double subduction zone accompanied differential adjustment of the crust horizontal stress with the NW-trending fauhs.更多还原