硅藻土的成矿条件和资源评价  

THE FORMING CONDITIONS AND RESOURCE EVALUATION OF DIATOMITE

作　　者：庄军[1] 徐兢 荀柏松 滕辉[1] 余江滨 

机构地区：[1]煤炭科学研究总院西安分院

出　　处：《煤田地质与勘探》1990年第2期16-20,T001,共6页Coal Geology & Exploration

摘　　要：对全国各主要硅藻土产地的成矿条件和硅藻植物的大最研究,发现硅薄土的厚度与古构造的活动频率有关。硅藻植物的种属、数量、壳体的完整性、繁衍速度和无机物质的种类、数量等与生境、沉积条件、水体的地球化学特征、古气候等有关。在此基础上总结出硅藻土资源评价的野外工作方法和室内研究重点。Having made a great number of study on the forming conditions of diatoms in the principal diatomite-produing areas,the authers foundthat the thickness of diatomite is related to thefrequenry of palaeo-structure activy.In an areawith stable structures,diatomite deposits arethick.Generally,diatom plants enteaded waste-ly and abundant reserves exists,where the ha-sin and water area were large.The generaand species,quantity test completeness multi-plying speed of diatom and the varieties andquantity of inorganic subtance are related tothe environments depositional conditions,hydrochemical features of water body,palaeo-clamit and other factors.From the study,thepaper deduced the field methods and labora-tory-research emphasis for the diatomiteresources vealuation.

关 键 词：硅藻土 成矿条件 资源 评价 

分 类 号：P619.265[天文地球—矿床学]