平驿铺组陆源碎屑岩的组构特征及其变化规律研究

分布在四川平武平驿铺一带的下泥盆统下部的砂～砾岩层顶、底出露齐全,反映该地史时期地壳运动状态的陆源碎屑建造类型在我国南方具有广泛的代表性,属同期沉积地层的标准剖面,早为地质学界公认并命名为“平驿铺组”——(D_1P)。平驿铺组陆源碎屑岩的物质组分、结构自下而上呈现有规律的变化,反映了本区早古生代末,晚古生代早期地壳运动状态及其沉积相的基本特征。

The Study on Fabric Character, and Changing Regularity of Terrigenous Detrital Rocks in Pingyipu Group

The stratum of the sandstone-conglomerate distributed in the outcrop cntirly on their top and bottom part of lower Devonian scries in the Pingyipu area, Ping wu County, Sichuan province/flic formation type of the terrigenous dctrital rocks reflect the state of the Crust movement during Devonian period has a Certain rcprcscn-tativc in South China The standard section of Devonion in south china has been know and named as "Pingyipu group" by geological researchers.From bottom to top, the composition and texture of Pingyipu group terrigenous dctrital rock show regular variety,which reflect the state of the reginal crust movement form the late-stagl of lower paleozoic era to the early-stagl of upper paleozoic era, and the general characteristics of thcscdimcntary facis.