Sandstones generally make good aquifers, while finer-grained mudstones are typically impermeable.

砂岩通常是良好的含水层，而细粒泥岩通常是不透水的。

Because they are porous, sedimentary rocks, such as sandstones and conglomerates, are important potential sources of groundwater.

由于像如砂岩和砾岩这样的沉积岩是多孔的，它们是地下水的重要潜在来源。

It intruded Eocene sandstones.

它侵入始新世砂岩。

Sandstones are, as a rule, interbedded with shales.

砂岩通常都与页岩互层。

The coarsest sandstones intercalated with grey mudstones.

最粗粒砂岩与灰色泥岩成互层。

Alternating sandstones and shales are regarded as important.

蚀变的砂岩和页岩是很重要的。

Well-sorted quartz sandstones are generally not very abundant.

分选良好的石英沙岩一般并不十分丰富。

The sandstones are mainly coarse, medium-coarse and medium sandstones.

砂岩以粗砂岩、中粗砂岩和中砂岩为主。

These sandstones are interpreted as having originally been point bar deposits.

这些砂岩在成因上被解释为点沙坝沉积。

Fluvial deltaic sandstones is a main reservoir rocks in shengtuo, Gudao, Dongxin oilfield.

河流、三角洲相砂岩为胜坨、孤岛、东辛等油田的主要储集层。

The layer rock is mainly lithic sandstone, the lithic quartz sandstone and quartz sandstones.

储层岩性主要为岩屑砂岩、岩屑石英砂岩及石英砂岩；

Beach bar sandstones are the important reservoir type in the south gentle slope belt of Dongying sag.

滩坝砂岩是东营凹陷南部缓坡带重要的储集体类型。

It is common to find well-consolidated sandstones and carbonate rocks that remain gauge after being drilled.

通常对于固结良好的砂岩和碳酸盐岩来讲，其井眼比较规则。

Detrital composition analysis of the Mesozoic sandstones indicates that their provenance is the Dabie orogen.

中生界砂岩碎屑组分分析，表明其源区为大别造山带。

Sandstones, which are porous and permeable, can provide the reaction space for fluid flow and rock interaction.

砂岩因其发育孔隙为流体的流动和流体与岩石的相互作用提供了场所。

The turbidite sandstones of one formation or one member are represented by one type or closely related two types.

一个组或段的浊积砂岩包括一种类型或紧密相关的两种类型；

The reservoir sandstones consist mostly of lithic sandstones and feldspathic litharenite with lower mineral maturity.

储集砂岩类型主要为矿物成熟度较低的岩屑砂岩和长石岩屑砂岩。

For example, the porosity of sandstones tends to be facies related, whereas in carbonate rocks this is generally not so.

例如，砂岩孔隙度一般与相有关，而一般在碳酸盐岩中则一般并非如此。

Some of The Sandstones Are So Homogeneous and Soft That They Are Capable of Receiving Most Elaborate Carving and Filigree Work.

一些砂岩是如此均匀和软表示，他们有能力接受最详细的雕刻和花丝工作。

According to that, it had suggested surface porosity compression correction equations for sandstones with different cement types.

在此基础上，对不同胶结类型的砂岩提出了地面孔隙度压缩校正方程。

The characteristic scale of continuity for sandstones is generally centimeter-scale, while that for cavern carbonates is meter-scale.

一般砂岩的连续性特征尺度在厘米量级，而溶洞型碳酸盐岩的连续性特征尺度在米量级。

The Donghe sandstones in the base of the Carboniferous was an excellent reservoir and main oil-producting interval in the Tarim Basin.

石炭系底部的东河砂岩是一套优质储集层和富油层，也是塔里木盆地的主要产油层。

Cold production has been successfully applied to the heavy oil recovery in uncemented sandstones taking as a new production technology.

冷采作为一种新的采油工艺，已成功地用于未胶结砂岩中的稠油开采。

There are shales and sandstones, which are marked by downslope in the continental basins and called the formation of polymict sandstone.

往上变为近海湖盆沉积，由砂岩、页岩组成，具有陆相盆地滑坡的标志，称为复矿砂岩建造。

The method of manufacturing glass ceramics with steel slag, fly-ash, copper mine tailings and sandstones as major materials was described.

介绍了以钢渣、粉煤灰、铜尾矿及砂岩为主要原料制备微晶玻璃的方法。

Microfacies and grain size analysis all indicate that the sandstones are significantly analogous to that of the high-energy clastic coast.

微相和粒度分析都表明其具有明显的高能碎屑海岸的滨海沉积特征。

The Jurassic sandstone reservoirs in Fudong Slope, Jungar Basin, are various fine_graded lithic sandstones deposited in a fluvial environment.

准噶尔盆地阜东斜坡区侏罗系砂岩储层为河流环境下形成的各类细粒岩屑砂岩。

Rock pore structure is one of the important parameters in controlling both seismic wave velocity and permeability in sandstones and carbonate rocks.

岩石孔隙结构是控制砂岩和碳酸盐岩的地震波速度和渗透率的重要参数之一。