广西田林浪平地区晚石炭世生物礁古生态特征  

The Late Carboniferous Reefs Palaeoecology Characteristics of Langping, Tianlin County,Guangxi Zhuang Autonomous Region

作　　者：巩恩普[1] 杨大勇[1] 陈晓红[1] 关长庆[1] 

机构地区：[1]东北大学地质系,沈阳110004

出　　处：《地质论评》2014年第3期515-528,共14页Geological Review

基　　金：国家自然科学基金资助项目(编号40972004;41202018);教育部高等学校博士学科点专项科研基金资助项目(编号20120042110027);中央高校基本科研业务专项资金资助项目(编号N100601002;N120401001)的成果

摘　　要：广西田林县浪平地区发育了几处黄龙期生物格架礁。这些发育在海百合碎屑滩上的礁体规模普遍不大,造礁和附礁生物种类多样,礁生物群落成熟度低,造礁方式单一,具有斑块式分布特点。浪平地区黄龙期点礁是在缺乏全球性主要后生骨架造礁动物的背景下发育的,没有明显优势造礁生物出现;点礁受研究区内大规模发育的碎屑滩影响显著,成礁环境多变、高能水体与碎屑选择作用明显、固结和硬质基底分布不广泛、水体能量频繁变化与适应环境的海百合繁盛、藻类在研究区内不发育,这些使得浪平地区点礁具有典型的"碎屑滩点礁模式"特征;造礁生物的生态特点对点礁的具体面貌具有重要影响。晚石炭世碎屑滩后生动物骨架点礁的发现,有助于进一步加强生物礁古生态系统研究。Some Huanglong framework reefs develop in Langping, Tianlin County of Guangxi province. The size of these reefs that developed in crinoids clastic beach is generally small. Reef-building and accessory reef organism species are variety. The maturity of reef biocenoses is poor. Only a single reef-building way exists. The distribution of reefs is patchiness. Huanglong reefs in Lang Ping develop under the absence of major global skeletal reef-building animals. No obvious advantage reef-building organisms appear. Reefs are significantly affected by large-scale clastic beach in study area. A variable reef-building environment, the obvious selection preference of high-energy water and debris, not extensive distribution of consolidated and hard substrate, frequent change of water energy, crinoids flourish adapting to the environment and the not development of algae in the study area, which make the patch reefs in Langping have the typical “patch reefs in clastic beach mode” feature. Reef-building organisms ecology has an important influence to patch reefs concrete morphologies. The discovery of Late Carboniferous skeletal patch reef in clastic beach contributes to further researching ancient reef ecosystem.

关 键 词：广西 晚石炭世 生物礁 古生态 

分 类 号：P588.29[天文地球—岩石学] P534.45[天文地球—地质学]