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地质通报  2002 

旅顺―大连地区沉积盖层的近南北向挤压变形―苏鲁大陆深俯冲的上盘板内变形效应

, PP. 308-314

Keywords: 俯冲带上盘,应变量,三维变化,旅大地区

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Abstract:

旅大地区位于中朝板块东部南缘,处在中国南北两大板块相互作用的影响范围内。该区早期变形结果表现为近南北向挤压应力作用下形成的、由两个上盘向北正滑的强变形带分割的3个褶皱构造岩片。在三维空间内变形特点均有差异:从上到下、从南往北、从西往东应变量递减。这种变形特点表明在板块俯冲体制下,上盘板内的变形是不均匀的。该期变形可能与扬子板块向北深俯冲碰撞过程相联系。

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