天然堤、决口扇、溢岸砂多为含泥粉砂、粉砂质泥和纯泥，很难成为有效储层。
The natural levee, crevasse splay and overbank sand are difficult to be effective reservoir for their content of mud-bearing silt, silty mud and unmixed mud.
一般而言，泥质砂岩、砂质泥岩的波阻抗值较大，泥岩波阻抗值较小，而砂岩介于两者之间。
Generally, values of wave impedance in argillaceous sandstone and sandy mudstone are relatively large, while that in mudstone is relatively small, and that in sandstone is situated between the two.
赋存稳定，结构简单，煤种为FM、JM，煤层顶板为石灰岩、粉砂岩，底板为泥质粉砂岩、砂质泥岩；
The occurrence is steady and the structure is simple with FM, JM types of coal, whose roof is limestone and siltstone and bottom is muddy siltstone and sandy mudstone;
湘东南地区资汝煤田上三叠统为一套灰黑色砂质泥岩、细砂岩、中粗粒砂岩以及煤层等沉积组合，具有砂泥薄互层层理、斜波状层理、水平层理及大型交错层理等沉积结构。
The Upper Triassic Series in the Zixing-Rucheng coalfield in southeastern Hunan is a set of grayish black sandy mudstone, fine sandstone, medium coarse sandstone and coal seams combination.
在亲水砂质、泥质沉积物的压实过程中，油的运移阻力大于水，而且，在压实过程中油的运移阻力是不断增大的。
The migration force of oil is bigger than that of water and increases constantly during the source of compaction of water-wet sandy and argillaceous sediment.
主要岩性有变泥质粉砂岩、长石石英杂砂岩、细砂质长石石英粉砂岩、长石杂砂岩、绢云石英千枚岩等。
Its main rocks is the metamorphic pelitic siltstone, the feldspathic quartz wacke, the fine sandial feldspathic quartz siltstone, the feldspathic wacke and the sericite quartz phyllite etc.
潮坪观测证明，砂质单层是风暴沉积，而泥质单层是正常天气的沉积单元。
The observation in the Nanhui tidal flat demonstrates that sand layer is deposited by storm, and clay layer is deposited during normal weather.
秦岭地区广泛分布有煌斑岩，其主要赋存于古生界志留系与泥盆系的粉砂质板岩中，大部分含金较高。
The lamprophyres are widely distributed in Qinling, which are mostly well auriferous. The lamprophyres are occurred in silty slates of Palaezoic Silurian and Devonian systems.
安徽淮南地区新元古代九里桥组主要由砂质、泥质灰岩，叠层石灰岩和白云质灰岩组成。
The Neoproterozoic Jiuliqiao Formation in Huainan region consists of sandy and silty limestone, stromatolite limestone and dolomitic limestone.
安徽淮南地区新元古代九里桥组主要由砂质、泥质灰岩，叠层石灰岩和白云质灰岩组成。
The Neoproterozoic Jiuliqiao Formation in Huainan region consists of sandy and silty limestone, stromatolite limestone and dolomitic limestone.
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