Composition of bottom sediments and rocks from the Philippine Trough

New data on bottom sediments and igneous rocks of the Philippine Trench are under consideration. They show differences in geological structures of the island slope and the ocean slope of the trench. The island slope is comparable to the accretionary prism formations on the Philippines; there processes of gravitational re-deposition of sediments occur. The ocean slope is an edge of the Philippine Plate sinking into the trough, where basalts of the oceanic crust are exposed.针对菲律宾海沟（Philippine Trench）的海底沉积物（bottom sediments）与火成岩（igneous rocks）的相关新数据正处于研判分析阶段。该批数据揭示了该海沟岛坡与洋坡的地质结构差异。岛坡与菲律宾境内的增生楔（accretionary prism）构造具有可比性，该区域存在沉积物的重力再沉积作用。洋坡则为菲律宾板块（Philippine Plate）俯冲进入海槽的边界，此处出露洋壳玄武岩。