藏南江孜地区的白垩系,50年代以来,一直分为下部的加不拉组和上部的宗卓组,时代大体相当于早、晚白垩世。吴浩若(1987)又在宗卓组上部分出床得组。王成善等(2000)认为地层层序是宗卓组在床得组之上,并将加不拉组时代上延到晚白垩世的Santonian。白垩系在藏南分布广泛,本区又是西藏白垩系的标准地点之一。这些变动,对西藏地质研究和 Since the 1950s, the Cretaceous in southern Tibet has been divided into the lower Cajara Formation and the upper Zongzhuo Formation. The era is roughly equivalent to the Early Cretaceous and the Late Cretaceous. Wu Hao Ruo (1987) and Zong Zhuo group part of the bed group. Wang Chengshan et al. (2000) considered that the stratigraphic sequence was the Santonian of Zongzhuo Formation above Bed Group and Upper Cretaceous of the Jiabu Formation. The Cretaceous is widely distributed in southern Tibet, and this area is one of the standard sites of the Cretaceous in Tibet. These changes are on the geological study of Tibet