地质学报2013，Vol.87Issue(5)：597-608,12.
广西田林县下垌村石炭纪早期珊瑚礁基本特征及其沉积环境分析
The Basic Characteristics of Early Carboniferous Coral Reef at Xiadong Village in Tianlin,Guangxi,and Its Sedimentary Environment
摘要
Abstract
A rarely Early Carboniferous metazon framework is unusually well developed in the Tianlin Region,Guangxi Province,China.This reef is constructed mostly by Diphyphyllum,Siphonodendron,Lithostrotion and Syringopora.The individual of frame-building corals occupied more space niche by clonal budding and bending growth avoiding obstacle.Whereas,in order to achieving successful competition,the growth strategy of groups was overtopping.The reef grew continuously,and there was no significant discontinuity and cyclicity.But there are some differences among the biological assemblages of reef-building coral during the frame-building period.Three continuous biological assemblage units can be identified,that are Diphyphyllum assemblage units,Siphonodendron-Lithostrotio assemblage units and Diphyphyllum-Syringopora assemblage units.Six microfacies types may be distinguished,including a little-bioclast wackstone,calcareous algae wackstone,bioclast packstone,muddy grainstone,coral framestone and foraminifera bioclast grainstone.The sedimentary facies model transfers from the depth open carbonate platform facies,shallow open carbonate platform facies,coral reef facies,inner carbonate platform slope facies,to intraplatform shoal facies.The facies indicate that the sedimentary environment was a lowering of relative sea level,water-shallowing and enhanced hydrodynamic force.关键词
广西/石炭纪/珊瑚礁/沉积环境/竞争Key words
Guangxi/Carboniferous/coral reef/sedimentary environment/competition引用本文复制引用
陈晓红,巩恩普,王铁晖,关长庆,张永利,杨大勇,王会敏..广西田林县下垌村石炭纪早期珊瑚礁基本特征及其沉积环境分析[J].地质学报,2013,87(5):597-608,12.基金项目
本文为国家自然科学基金项目(编号40972004)和中央高校基本科研业务经费项目(编号N110601001,N100601002)共同资助的成果. （编号40972004）
