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地球学报  2001 

新疆塔里木—西昆仑宽频地震观测实验研究

Keywords: 宽频地震台阵,青藏高原,塔里木,昆仑山,碰撞变形

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Abstract:

利用获取的宽频地震数据,采用接收函数方法,获得了塔里木块体与青藏高原北缘西昆仑山结合部位的地壳及上地幔结构新信息。塔里木块体的地壳结构相对简单,其块体南缘的莫霍界面深度为42km,且向南倾斜,在西昆仑山前深度增加到50km左右。接收函数图象清晰地显示出,塔里木块体南缘和西昆仑山下存在南倾和北倾的构造特征,这些构造特征可以用地壳和上地幔相互穿插和变形的岩石圈碰撞模型来解释。

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