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在青藏高原北缘的山前凹陷河西走廊内，晚新生代山麓相磨拉石酒泉砾石层和玉门砾岩呈角度不整合接触．对酒西盆地老君庙背斜剖面开展的古地磁测年发现酒泉砾石层底部年龄为０．８４ ＭａＢＰ，不整合面年龄为０．９３～０．８４ ＭａＢＰ，揭示青藏高原北部在这一时期发生了强烈新构造挤压隆升．
In the Hexi Corridor of the Shanqian Depression on the northern margin of the Qinghai-Tibet Plateau, there is an angular unconformity contact between the gravel layer of the Jiuquan Jiuquan rock and the Yumen conglomerate at the foothill of the Late Cenozoic. Based on the paleomagnetic dating of the Laojunmiao anticline section in the Jiuquan basin, the bottom of the Jiuquan gravel bed was found to be 0.84 MaBP at the bottom and 0.93 ~ 0.84 MaBP at the unconformity, revealing the northern part of the Tibetan Plateau during this period A strong new tectonic extrusion uplifted.