二、环境与考古文化周原地区,诚然由于地质的新构造运动;由于(氵韦)河从中分割,今天分为南北两大部分。北部属于周原本身而缩小破碎;南部属于分割后的周原地区周慕和雍积塬等塬区,南北两缘均有“稍隆起”或稍突起的特点,塬面略呈浅凹平形由西北斜向东南而呈显有一个现代性地貌特征。周原之所以有今天这样一个地貌特征,这与它在“早第三纪到晚第三纪这一时期”并所具有的基岩古地貌特 Second, the environment and archeology culture Zhouyuan area, of course, due to the geological new tectonic movement; due to (Wei Wei) River from which to split, today is divided into two parts north and south. The northern part belongs to the Zhouyuan itself and narrows the crushing. The southern part belongs to the divided areas such as Zhoumu and Yongjiuyuan in the Zhouyuan area. Both sides of the north and south edges have the characteristics of “slightly uplift” or slight protrusion, and the plateau is slightly concave Plain from the northwest diagonal to the southeast and showed a modern landscape features. Zhou Yuan reason why there is such a geomorphological feature today, which is in its “early Tertiary to Late Tertiary period” and has the bedrock paleontology