摘要
黔南平塘晚二叠世大隆组的层状硅质岩分布稳定,厚度一般为几十米,富含数量不等的菊石和腕足化石。本文根据大隆组硅质岩的岩石特征、生物组群以及与下伏地层接触关系,认为大隆组属局限台地相,其硅质岩形成于较浅的水环境下。
Silicalite of the Upper Permian Dalong Formation in Pingtang,south Guizhou has a stable horizon with a thickness of tens meters,yielding abundant ammonites and Brachiopoda.This paper believes that it was deposited in a restricted platform on the basis of rock characteristics,fossils and contact relationship.
出处
《四川地质学报》
2010年第3期275-277,共3页
Acta Geologica Sichuan
关键词
大隆组
硅质岩
沉积环境
黔南
Dalong Formation
silicalite
sedimentary environment
south Guizhou
