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澳大利亚-斑达岛弧碰撞力学 被引量:1

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摘要 在澳大利亚大陆北缘与松巴—塞拉姆的斑达岛弧之间正在积极地碰撞。在松巴岛以西,印度洋板块正在向大洋俯冲系中东南亚南缘之下的爪哇海沟中俯冲下去,伴随有洋底增生杂岩和弧前盆地,其后侧是积极活动的火山弧.松巴做大陆岛是弧前盆地的异常特征。在松巴岛西南澳大利亚边缘沉积开始进入俯冲系的部位,变形前峰带向南隆起,增生杂岩升出海平面。此处的弧前盆地宽达400km,但向东却减小到150km,这是因为澳大利亚大陆架的前进而使变形前峰带向北推进了。在帝汶海槽中,达到中侏罗纪破裂不整合面的澳大利亚边缘沉积上升隆起并向南逆冲,形成了一系列向帝汶南岸的海脊。
出处 《地质科学译丛》 1989年第3期22-22,共1页
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