Most of the ICV results on the collectted glutenite samples from the bottom of Quanji group(including Mahuanggou Formation and Kubaimu Formation), Quanji mountain and Oulongbuluke mountain outcrops in Oulongbuluke block, greater than 1 or less than 1.That means the glutenite sedimentary in the bottom of Quanji group is an initial sedimentary formed in the district with intense tectonic activity.CIA indexes of glacial rock samples that preserved in the bottom of Quanji group mostly around 53, then increase up to around 65 vertically, that reflects the ancient climate turned to warmer as a whole.These extremely low CIA indexes manifest a low degree of chemical weathering in cold climate condition occurred during the Early Neoproterozoic epoch, that makes us confirm the Early Neoproterozoic cold weathering climate influenced the study area from the perspective of CIA index for the first time and give out a further evidence for the study area was under the control of “snowball earth”.With the summary on the previous chronology studies, we limit sedimentation time of glacial deposit formation with a large number of low CIA indexes glutenites during 780±20Ma to 740±16Ma and correspond it to the international Kaigas glacial epoch and Beiyixi glacial epoch