Sedimentary Characteristic of Neoproterozoic Glaciomarine in the Quanji Area and Its Geological Significance
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    Abstract:

    Neoproterozoic glacial deposit in Kubaimu formation is found in Quanji area,north of Qaidam Basin. This strata preserved the mark of ice rafting and wave action. Through the description and analysis of characteristics of aquatillite in three outcrops,sedimentary model is established.Ferrite sandstone on the aquatillite verifies the facticity the iron enrichment event in Neoproterozoic. Conbined with the previous chronology evidence and its relationship with BIF, we could conclude that the glacial deposit was the product of Sturtian Ice during the first global glacial period.And that is the first time we prove the existence of Pre-sinian glacier events in this area. Through the study of glacial events,we consider that Mahuangou formation should be incorporated into Qingbaikouan System, which could prove the existence of stable deposits in Qingbaikouan System.

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SUN Jiaopeng, CHEN Shiyue, PENG Yuan, HU Zhongya, ZHUANG Yukai, MA Shuai, LIU Yao.2014. Sedimentary Characteristic of Neoproterozoic Glaciomarine in the Quanji Area and Its Geological Significance[J]. Acta Geologica Sinica,88(7):1334-1340

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History
  • Received:December 20,2013
  • Revised:June 10,2014
  • Adopted:June 10,2014
  • Online: July 16,2014
  • Published: