滇黔桂盆地及邻区泥盆纪层序地层格架及其古地理背景  

Devonian sequence-stratigraphic framework and its paleogeographical background in the Dianqiangui Basin and its adjacent areas

作　　者：梅冥相[1] 曾萍[1] 初汉明[1] 刘智荣[1] 李东海[1] 孟庆芬[1] 易定红[1] 

机构地区：[1]中国地质大学地球科学与资源学院

出　　处：《吉林大学学报（地球科学版）》2004年第4期546-554,共9页Journal of Jilin University：Earth Science Edition

基　　金：中国石化集团科技开发工程项目(NPJ-1008)

摘　　要：滇黔桂盆地及其邻区的泥盆系包括下部的海侵碎屑岩系、中部的混合沉积地层和上部的碳酸盐岩地层,其中又可以进一步划分为13个三级沉积层序和两个二级构造层序。不同阶段三级层序的相序组构特征及其空间变化代表了不同的岩相古地理背景,形成了一个受海平面变化和区域构造运动共同控制的沉积盆地充填序列;同时也反映出研究区域三级海平面变化与欧美地区相对比存在较大的差异。The Devonian System in the Dianqiangui Basin and its adjacent areas consisting of three parts. The lower part is a set of transgressive sandstones, the middle is a mixed rock series and the upper is marked by a set of carbonate rocks. For the Devonian System of the Dianqiangui Basin and its adjacent areas, 13 third-order sedimentary sequences can be discerned and they can be grouped into two second-order tectonic sequences. In different depositional periods, the facies-succession features of the third-order sequences and their regular spatial changes reflect various palaeogeographical patterns. Controlled both by the global sea-level changes and by the regional tectonic movements, a particular Devonian filling succession of the sedimentary basin was formed. The third-order sea-level changes in the study area differ greatly from those of Europe and America.

关 键 词：层序地层格架 古地理背景 泥盆纪 滇黔桂盆地及邻区 

分 类 号：P618.13[天文地球—矿床学]