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根据对希夏邦马峰北麓佩枯错湖区古湖岸的升降变化、门曲谷地河流阶地和冰水阶地等的实地考察，以及地形图、卫片、航片判读所取得的资料，并结合本区第四纪以来不同时期的上升幅度、古地理变迁、冰期与间冰期更替、动植物演进等方面的研究成果，发现希夏邦马峰北坡第四纪不同时期的冰水相沉积物，曾对门曲谷地有过不同程度的堰塞作用，故而提出佩枯错湖为堰塞成因的解释，其从初始形成、兴盛发育到衰退的演变过程与区内冰川类型从山谷冰川、山麓冰川到山谷冰川的演替过程是一致的．
Based on the field survey of the changes of the ancient lakeshore in the Pukucuo Lake area at the northern foot of Shishapangmao Mountain and the river terrace and ice-water terraces of the Menter Valley, as well as the information obtained from topographical maps, satellite films and aerial photographs, The research results on the upswing of Quaternary period, the paleogeographic change, the alternation of glacial period and interglacial period and the evolution of animals and plants in the Quaternary Period of this area show that the ice-water sediments , Which had different degree of damming effect on the Menghut Valley. Therefore, the explanation of the cause of the dam formation was proposed. The evolution from initial formation, development to recession and the type of glaciers in the area range from valley glacier to foothill glacier The succession to the valley glacier is consistent.