台湾南部恒春海脊地质地球物理特征及其大地构造属性

被引:4
作者
王平
夏戡原
黄慈流
机构
[1] 中国科学院南海海洋研究所!广东广州
关键词
恒春海脊; 陆壳; 增生楔; 弧陆碰撞;
D O I
暂无
中图分类号
P736.1 [海洋地质构造];
学科分类号
070704 ; 0709 ;
摘要
恒春海脊的地质、地球物理特征与其相邻的南海海盆、吕宋火山弧和北吕宋海槽等地质构造单元所反映的特征明显不同 ,主要表现为低密度、弱磁性。推测其地壳性质为陆壳 ,是恒春半岛的南延部分。海脊西侧缓坡为陆缘增生楔 ,可见刺穿现象 ,这些刺穿构造是由逆冲挤压引起的泥底辟。海脊东部受弧陆碰撞的影响而急剧抬升。东部的弧陆碰撞是海脊抬升和增生楔形成的主要原因
引用
收藏
页码:33 / 39
页数:7
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