论文部分内容阅读
在对Ｔａｐｐｏｎｎｉｅｒ等人提出的青藏高原周缘响应两大陆碰撞发生的“块体挤出”模式的野外检验中，高原东南部向南滑出的陆块西边界问题一直悬而未决．新近的工作证明，腾冲地块的东、西边界高黎贡右旋走滑带和那邦右旋走滑带（Ｍｏｇｏｋ变质带）的运动学、变形年代学与挤出地块的东边界红河－哀牢山左旋走滑带有很好的对应性，由此推定高黎贡和那邦右旋走滑断裂带是青藏高原东南部响应两大陆碰撞向南挤出地块的西边界．已有结果还显示，作为吸纳两大陆会聚的重要形式，高原东南部块体的向南挤出是一个多阶段过程，至少有两期高峰时限：２３和１３ Ｍａ．
In the field test of Tapponnier et al.’s response to the “block extrusion” mode of the collision between the two continents on the periphery of the Qinghai-Tibet Plateau, the problem of the western boundary of the block slipped southwards in the southeastern plateau has been unresolved. Recent work has shown that the kinematics, deformable chronology and the eastern boundary of the extruded massif, the Red River, are characterized by the dextral strike-slip belt of the Gaoligong and the Mogok metamorphic belt on the east and west boundaries of the Tengchong block - Ailaoshan left-lateral strike-slip zone has a good correspondence, which concluded that the Gaoligong and Naland dextral strike-slip fault zone is the southeastern part of the Qinghai-Tibet Plateau in response to the collision of two continents south of the western boundary of the plot. It has also been shown that the southward extrusion of blocks in the southeastern plateau is a multi-stage process as an important form of convergence of the two continents, with at least two peak periods of 23 and 13 Ma.