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黄河小浪底坝区河床复盖层厚度大,分布广、层次多、相变大,且有呈区域性分布的河谷深槽分布。笔者基于对本区第四纪地质及地貌研究认为,本区二级阶地系气候阶地,河谷深槽的成因既非本坝段区之新构造运动所引起,亦不是顺河向断陷的结果,而是由于海面升降引起的河流下切作用造成的。笔者还认为,第四纪河流地貌的形成系“地动”与“水动”的结果这一观点可能更符合实际。应该重视气候阶地及气候变化引起的河谷深槽的情况。处于一直上升隆起的小浪底地区,沉积巨厚的河床复盖层,并非区域性断陷所引起,而是气候的作用。
The Xiaolangdi dam area of the Yellow River bed cover thickness, distribution of wide, multi-level, large phase transition, and has a regional distribution of deep trench distribution. Based on the study of Quaternary geology and geomorphology in this area, the author believes that the genesis of the second terrace terraces, climate terraces and deep valleys in the area is neither caused by the new tectonic movement in this dam section nor is the result of the syn- But due to the sea caused by the role of river undercutting caused. The author also believes that the formation of Quaternary river landscape is “ground moving” and “hydrodynamic” the result of this view may be more realistic. Attention should be paid to the climate terrace and the deep troughs in the valley caused by climate change. In the area of Xiaolangdi, where the uplift has been uplifted, sedimentary thick bed cover is not caused by regional rifting but rather climate.