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Stratigraphic Division of the Late Triassic-Early Jurassic Volcanic Events of the Central Part of Jilin Province
详细信息   
摘要
According to the different scale regional geological survey and comprehensive research data,the middle part of Jilin Province in early Mesozoic volcano event stratigraphy can be preliminarily divided as follows: Late Triassic epoch Dajianggang Formation depositional stage since the early and late are as follows: Xingxingshao volcanic event(229.5-227.5)Ma,the Guanma volcanic event(222±10) Ma,Xitushan volcanic event(210±19)Ma.Early Jurassic Banshidingzi depositional period are as follows: the Shuangyazi Dongshan volcanic event(195.04 ±5.01)Ma,the Guanma gold mine volcanic event(193.6Ma),the Early Jurassic Taiyangling deposition period are as follows: the unnamed volcanic event 1(188.0 ±19.0) Ma,unnamed volcanic event 2(184.0±1.1) Ma,North Lake volcanic event(179,4 ±1,1) Ma,Erdaogou volcanic event(174.0 ±34)Ma.

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