摘要
本文对云南南涧地区三条云南驿组实测地层剖面进行分析总结,讨论了云南驿组岩石地层和生物地层特征,进而阐述了楚雄盆地上三叠统云南驿组的沉积相:云南驿组下段为典型的滞流、还原环境的深水盆地相沉积,中段为斜坡-盆地相沉积,上段主体是一套盆地相的深水沉积,以深海浊积扇沉积为主,部分为斜坡-盆地边缘的半深海相沉积。
This paper analyzed and summarized the characteristic of three measured stratigraphic sections of Yunnanyi Formation in Nanjian Area,Yunnan,and discussed the lithostratigraphy and biostratigraphic features.Then,we explained that the sedimentary facies of Upper Triassic Yunnanyi Formation at Chuxiong Basin. The Lower Member developed typical deep-water basin facies in retention and reducing environment. The Middle Member developed carbonate slope facies,basin facies.the upper member mainly developed deep-water basin facies,which especially deposited deep-water turbidite fan,partly bathyal facies of slope-basin margin.
出处
《四川有色金属》
2017年第1期55-58,共4页
Sichuan Nonferrous Metals
基金
云南1:5万盟铺马村(G47E018018)
南涧彝族自治县(G47E018019)
一街(G47E018020)
公郎(G47E019018)4幅区域地质矿产调查(编号:1212011220386)
关键词
云南驿组
岩石地层
生物地层
斜坡相
盆地相
Yunnanyi Formation
lithostratigraphy
biostratigraphy
slope facies
basin facies
