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吕宋以西的马尼拉海沟勾画了中国南海边缘盆地向菲律宾活动带下俯冲的界线(图1)。海沟南部向东朝民都洛岛西面弯曲,并逐渐变浅。与该俯冲作用有关的现代火山活动从吕宋一直伸展到民都洛岛东部。该岛的区域构造以倾向北东的逆断层岩板为特征,其中含有时代未定的超镁铁岩和镁铁
The Manila Trench west of Luzon delimits the boundary between the margins of the South China Sea and the Philippine belt (Figure 1). The southern part of the trench is curved to the east of Mindoro Island to the east and gradually becomes shallow. Modern volcanic activities associated with the subduction extend from Luzon to eastern Mindoro Island. The island’s tectonic features are characterized by reverse-fault sills that are prone to the north-east, which contain undefined mafic rocks and mafic