The resultant united block has drifted northward to the present position since the late Cretaceous.
晚白垩纪以后，一体化的三块体继续向北漂移，并于第四纪到达现今地理位置。
The North-dipping structure recorded northward subduction of the Yangtze block happened in Mesozoic.
总体北倾的莫霍面和同样北倾的下地壳结构记录了中生代扬子陆块的向北俯冲。
The north-dipping reflection constitutes seismic evidence for the northward subduction of the lower crusts of the Songpan block and West Qinling orogen.
这种北倾的反射为松潘地块向西秦岭下地壳俯冲提供了地震学证据。
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