咸阳地区黄土高原泥流是在特定的自然地理条件下产生的。在地质构造上,本区属于鄂尔多斯地台的南部。晚第三纪强烈的剥蚀,使这一地区大量的基岩剥蚀产物堆积在山前低洼地带或一些盆地中,形成以红色粘土、亚粘土为主的晚第三系堆积。第三纪末的强烈侵蚀和剥蚀作用,使这一地区形成了规模不等、由上第三系构成的盆地和丘陵地形,即古地貌结构基础。第四纪以来的新构造运动,使黄 Xianyang loess plateau in the mud flow is generated in a specific natural and geographical conditions. In the geological structure, the area belongs to the southern Ordos platform. Late Tertiary strong denudation, so that a large number of bedrock denudation products in this area piled up in the piedmont lowland or some basins, forming a red clay, clay-based Late Tertiary accumulation. The intense erosion and denudation at the end of the Tertiary Period resulted in the formation of basin and hilly terrain of various sizes in the area ranging from the Upper Tertiary to the paleo-topographical structure. The new tectonic movement since the Quaternary made the yellow