摘要
新观察和研究确认青杨木沟组岩石地层特征,一是硅藻土矿和古砂金矿的主要含矿层位;二是在同沉积期间发生过多次玄武岩喷溢事件。前人曾分别命名"青杨木沟组"、"松花江玄武岩"、"小丰满玄武岩"等多个正式或非正式岩石地层单元。青杨木沟组年代地层按照已取得的生物地层和相关玄武岩的测年数据可确认为上新世。
A new research shows the lithostratigraphic characteristics of Qingyangmugou Formation as that： firstly,this formation is the main ore-bearing layer of diatomite and old gold placer,secondly,and there were several events of basalt outpouring during this synsedimentary.Previously,this formation was named as ＂Qingyangmugou Formation＂,＂Songhuajiang basalt＂ and ＂Xiaofengman basat＂,etc.By the biostigraphy and related data with basalt dating,the authors concluded that the Qingyangmugou Formationaged aged in Pliocene.
出处
《世界地质》
CAS
CSCD
2011年第1期34-38,共5页
World Geology
基金
吉林省科技发展计划项目(20080454)
关键词
青杨木沟组
硅藻土
古砂金矿
松花江玄武岩
上新世
吉林省
Qingyangmugou Formation
diatomite
old gold placer
Songhuajiang basalt
Pliocene epoch
Jilin Province
