藏北丁固—加措地区中-上更新统高台阶砾石层的厘定及其意义

Determination and Its Significance of Gravel Layer of High Stage of Middle-upper Pleistocene Series in Dinggu-Jiacuo Area of North Tibet

西藏北部丁固-加措地区,分布一套零星出露的、固结—半固结状态的砂砾岩层,在综合研究其岩石组合、沉积特征、地质时代、区域地质特征的基础上,将其厘定为一个非正式岩石地层单位——高台阶砾石层,该砾石层对研究区内第四系地质演化具有重要意义。

IntheDinggu-JiacuoareaofnorthTibet,thereissomeexposed,solidifiedandsemi-solidified gravel distributed,on the basis of studying the rock composition,sedimentary feature,geologic era and region-al geologic characters,it is determined to be a informal stratigraphic unit：gravel layer of high stage,it will be important for Quaternary study in the target area.