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黔桂泥盆、石炭系白云岩的形成模式
石油与天然气地质
1999年 20卷 第No.1期
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Title
FORMATION MODELS OF DEVONIAN AND CARBONIFEROUS DOLOMITES IN GUIZHOUGUANGXI REGION
Authors
Fang Shaoxian
Hou Fanghao
Dong Zhaoxiong
Zhu Xiaohui
摘要
黔桂地区泥盆、石炭系层状白云岩,厚度大,层位稳定,主要分布于与陆相连的碳酸盐岩台地外缘及孤立碳酸盐岩台地上。研究认为,白云岩的形成模式主要有5种,即潮汐泵汲白云石化模式、正常海水白云石化模式、近地表混合(水)白云石化模式(可分为海水较高和海水较低二种模式)、埋藏成岩环境白云石化模式(又可分为压实排挤流和热(盐)水为主混合的二种模式)及构造热液白云石化模式。不同的白云石化模式具有各不相同的机理和特点。
Abstract
The Devonian and Carboniferous laminated dolomites in GuizhouGuangxi Region are mainly distributed on the edge of continentlinked(shelf)carbonate platform and the isolated carbonate platform near deep trough.The dolomitization mechanism includes active tidal pumping dolomitization ,normal seawater dolomitization,mixed near surface dolomitization,buried squeezecompaction flow dolomitization, tectonic hydrothermal dolomitization.It is suggested that different dolomitization models possess different mechanisms and characters.
关键词：
白云石化作用;
模式;
连陆碳酸盐台地;
孤立碳酸盐台地;
台内洼地;
储集性;
Keywords:
dolomitization;
model;
continentlinked carbonate platform;
isolated carbonate platform intraplatform sag;
reservoir quality;
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