2) plot for the composition of sandstones
砂岩碎屑成分投点
3) clastic composition
碎屑岩成分
1.
The influences of clastic composition, sedimentary environment and sedimentary facies,temperature -pressure fields,geological fluid and burial process,etc,on the diagenesis of clastic reservoir were discussed.
探讨了碎屑岩成分、沉积环境和沉积相、温压场、地质流体以及埋藏作用等因素对碎屑岩储层成岩作用的影响,讨论了碎屑岩储层成岩作用的主要影响因素及优质储层形成条件。
4) detrital composition of sandstones
砂岩碎屑组分
1.
Comparison between two methods for statistical study of detrital composition of sandstones;
两种砂岩碎屑组分统计方法的比较
6) sandstone fragment
砂岩碎屑
1.
Through analysis of sandstone fragments in triaxial tests with different confining pressures by sieve method and specific gravity method, it is found that the distribution of sandstone fragments is fractal.
对不同围压的实验中的砂岩破碎碎屑,用筛析法和比重计法分析砂岩碎屑的分布,发现砂岩破碎碎屑是分形分布。
补充资料:粉砂岩
粉砂岩 siltstone 由粒径为0.0625~0.0039毫米(mm)的粉砂的含量占50%以粉砂岩标本的一种碎屑沉积岩。除粉砂以外其它由砂、粘土或化学沉淀物组成。按粒度划分为粗粉砂岩(0.0625~0.0312mm)和细粉砂岩(0.0312~0.0039mm)。按碎屑成分划分为石英粉砂岩、长石粉砂岩、岩屑粉砂岩(少见)和它们间的过渡类型。根据胶结物成分划分为粘土质粉砂岩、铁质粉砂岩、钙质粉砂岩和白云质粉砂岩。黄土也是一种疏松的或半固结的粉砂质沉积物。粉砂岩多形成于河漫滩、三角洲、潟湖和海洋的较深水部位。
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