浅析中国湖相白云岩主要的成因模式和沉积环境  

A brief analysis introduction of lacustrine dolomite in China and its genesis model and depositional environment

作　　者：牛元哲 王骁睿[2] 

机构地区：[1]西北大学地质学系,陕西西安710069 [2]中国石油长庆油田分公司第二采油厂,甘肃庆阳745100

出　　处：《石油化工应用》2016年第1期66-71,共6页Petrochemical Industry Application

摘　　要：由于中国大陆自晚古生代以来海西运动,特别是印支运动以后,得到空前发展。中、新生代陆相的沉积盆地星罗棋布。在中国,湖相碳酸盐岩的分布,主要集中在中、新生代,空间上遍布全国各类陆盆中。湖相白云岩多数为次生白云岩,准同生白云岩较为少见,次生白云岩对于反演成岩过程中的沉积环境有很好的指示作用。通过对不同成因模式的湖相白云岩的分析有助于还原沉积环境,再结合不同地区的岩石组合,生物化石组合和地球化学特征,可以更准确的推测当时的古环境古气候。China mainland was unprecedentedly developed since late Paleozoic hercynian orogeny,especially after indosinian movement.Mesozoic and Cenozoic terrestrial basins distribute broadly.In China,the lacustrine carbonates mainly distribute in Mesozoic and Cenozoic and is widely distributed in various terrestrial basins.The secondary dolomite is the dominated fancies of the lacustrine dolomite,penecontemporary doiostone is relatively rare.The secondary dolomite is an indicator of inversion diagenesis process of depositional environment.Analysis on different genetic model of lacustrine dolomite can be the key to deoxidize sedimentary environment,combined with rocks unites in multi-area,fossil assemblage and geochemical analysis can accurately reveal the palaeoenvironment and palaeoclimate.

关 键 词：湖相白云岩 沉积环境 岩石学特征 成岩模式 白云化作用 

分 类 号：P618.13[天文地球—矿床学] P588.245[天文地球—地质学]