广西十万大山盆地上三叠统沉积相分析及沉积古环境再造  

Guangxi ShiWan Mountain Basin,Upper Triassic sedimentary facies analysis and paleoenvironmental reconstruction

作　　者：杨创[1] 匡经水[1] 魏云迅[1] 

机构地区：[1]中国煤炭地质总局航测遥感局,西安710054

出　　处：《科技促进发展》2011年第5期44-48,共5页Science & Technology for Development

摘　　要：运用现代沉积学研究方法,通过建立沉积相模式,对广西十万太山盆地上三叠统沉积环境进行了研究。研究结果表明,广西十万大山盆地是印支期以来形成的由巨厚磨拉石建造组成的中、新生代前陆盆地,因受构造的影响,晚三叠世的沉积响应比较明显:沉积旋回呈现了深—浅—深—浅的特征,广泛发育的沉积相主要为滨湖相、河流相和河流三角洲相。由于地形震荡频繁等原因,未能形成较为稳定的具有较大工业价值的煤层。Guangxi ShiWan Mountain Basin is a Mesozoic and Cenozoic foreland basin formed since Indosinian,which is composed of the thick molasses,it is influenced by the construction and it's response to the sedimentary of the Late Triassic is:Sedimentary cycle presents a deep-shallow-deep-shallow feature.The primary sedimentary facies of the basin is Lakeside Phase,fluvial facies and river delta facies.Some reasons such as Terrain frequent shocks lead to the failure of forming a more stable and industrial valuable coal seam.

关 键 词：十万大山 上三叠统 沉积相 古环境 

分 类 号：P512.2[天文地球—地质学]