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通过深地震反射剖面,宽频天然深地震探测,广角折射、反射剖面,结合地表地质观察、岩石矿物和地球化学研究,以及弹性模拟计算等,对当前国际上流行的所谓高原北缘向南呈A型俯冲,南缘向北俯冲构成的青藏高原地壳加厚、隆升的“双俯冲”(two-sidedsubduction)模式提出质疑,认为高原北缘至少在西昆仑与塔里木(欧亚板块)之间不存在长距离的俯冲,在新生代以来的强劲挤压中,塔里木起到了一定的阻挡作用,在这里呈现南北向挤压应力场,因而青藏高原西北缘陆-陆碰撞造山、盆山的形成受到“南北双向挤压模式”所控制,也是造成青藏高原西北缘新生代期地壳加厚、隆升的重要动力因素
Through the deep seismic reflection profile, wide-band natural deep seismic exploration, wide-angle refraction, reflection profile, combined with surface geological observation, mineralogy and geochemistry of rocks, and elastic simulation calculation, the current international popularity of the northern edge of the so- Type subduction and the north-south subduction, the “double-subduction” pattern of the crust thickening and uplift of the Qinghai-Tibet Plateau is questioned. At least the northern margin of the plateau is not at least between the western Kunlun and the Tarim (Eurasian plate) There is a long-distance subduction. In the strong extrusion since the Cenozoic, Tarim played a certain blocking role, showing the compressional-stress field in the north-south direction. Therefore, the continental-continental collision in the northwestern margin of the Qinghai-Tibet Plateau resulted in the formation of “ North-South two-way squeeze mode ”controlled, but also caused the Northwest Qinghai-Tibet Plateau crustal thickening, uplift important driving forces