论文部分内容阅读
Objective The Huoshiling Formation is the earliest volcanic stratum in the Songliao Basin,composed mainly of intermediate-basic volcanic rocks,with rare fossils.The geological age of this formation has been controversial for long.The accurate dating is not only the basis of
Objective The Huoshiling Formation is the earliest volcanic stratum in the Songliao Basin, composed mainly of intermediate-basic volcanic rocks, with rare fossils. Geological age of this geological formation has been controversial for long. Accurate rainfall is not only the basis of