Thin layers of sandy shale, and carbonaceous fragments are locally present.
局部出现砂质页岩薄层和碳质碎屑。
These folded rocks are composed of medium to thick bedded limestone of Ordovician and of thin bedded shale and siltstone of Silurian.
这些褶皱岩层是由奥陶系的中层至厚层石灰岩以及志留系的薄层页岩和粉砂岩组成。
Sandstones are, as a rule, interbedded with shales.
砂岩通常都与页岩互层。
Shale underlies coal.
页岩层在煤层之下。
thin layers of rock used for roofing.
用来盖屋顶的薄岩石层。
An evenly layered sedimentary rock that can be split into paving stones.
薄砂层岩，板层砂岩一种有整齐分层的能打砸成铺路石的水成岩
A metamorphic rock, intermediate between shale and slate, that does not possess true slaty cleavage.
厚层泥岩一种变质岩，在页岩与板岩之间，不具备真正的板块解理
The shale beds in between generally deform plastically.
夹在其中的页岩层通常是塑性变形。
Effect of the Water Sensitivity of Mud Stone and Shale on the Plastic De-formation of Salt Bed
泥页岩水敏性对盐岩层塑性变形的影响
In the stone coal layer and the overlying black shale, there is a pyrite layer.
在石煤层或其上部的碳质页岩中含黄铁矿层。
New England has many trees and thin, rocky soil.
新英格兰有许多树木和薄薄的岩石土层。
some thin beds of layered sandstone and dark grey siltstone show slump structures.
一些薄层砂岩和暗灰色粉砂岩显示出滑动构造。
Study and Application on Overburden Moving Law of Shallow Stope in Thin Bedrock;
薄基岩浅埋采场上覆岩层运动规律研究与应用
The study of the overburden damage movement law of the shallow buried coal seam of thin base rock
薄基岩浅埋煤层覆岩破坏移动规律研究
A thin coating of ice, as on rock.
雨淞，冻雨一层薄冰，如在岩石上的
a fine-grained metamorphic rock that can be split into thin layers.
一种细颗粒的变质岩，能分裂成薄层。
the arrangement of leaflike layers in a rock.
岩石中像叶子一样的薄片层状结构。
The mud is interrupted by numerous thin beds of limestone.
泥质物被许多薄层灰岩所隔开。