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红柳沟地区位于陕西定边境内,构造位置处于鄂尔多斯盆地一级构造单元-天环坳陷,紧邻伊陕斜坡。在前任研究的基础上,运用数据分析、对比等方法对研究区古地貌进行细微刻画,结果认为,研究区主要发育二级古河道—宁陕古河及其分支河道,河道沿北西—东南向贯穿全区,发育大面积的古斜坡,局部发育古高地。
The Hongliugou area is located in Dingbian, Shaanxi, and is located in the Tianhuan Depression, the first-order tectonic unit of Ordos Basin, close to the Yi-Shan slope. On the basis of the previous studies, the paleogeography of the study area is subtly depicted by means of data analysis and comparison. The results show that the main ancient river course in the study area is the Ningshan Furukawa River and its branch rivers, which run along the NW-SE direction The whole region, the development of a large area of ancient slope, the local development of ancient high ground.