It is these, fossilised, that form rocks such as chalk and limestone.
也正是这些物质，形成了诸如白垩和石灰石的化石。
The types of reservoir rocks mainly are oolite dolomite and dissolved porous oolite limestone.
其储集岩类型主要为鲕粒云岩和溶孔鲕粒灰岩两大类。
In Palestine rocks were primarily limestone, and they formed cliffs with caves that became hiding places for protection and safety.
巴勒斯坦的岩石主要是石灰石，它们形成的悬崖边有很多供人躲藏的山洞，躲在里面可得保护和平安。
It mainly consists of spilite, keratophyre and volcanic clastics, intercalated with siliceous rocks, limestone and clastic rocks or lens.
主要由细碧岩、角斑岩及火山碎屑岩组成，其中有硅质岩、灰岩及碎屑岩夹层或凸镜体。
The overlying strata of the coal bed roof are dominated by sedimentary rocks such as shale, sand stone and limestone, whose physical and mechanic properties differ greatly.
煤层顶板覆岩一般以页岩、砂岩、灰岩等沉积岩为主，其物理力学性质差异很大。
The grained Carbonate rocks of Qianjiang Formation in Qianjiang Sag can be divided into oolitic limestone, sand-clastic limestone, mud-crystal sand-clastic dolomite, alga-gobbet limestone etc.
潜江凹陷潜江组粒屑碳酸盐岩性主要发育鲕粒石灰岩、砂屑灰岩、泥晶砂屑云岩、藻团块灰岩等。
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。
Reservoir rocks of lower Paleozoic mainly include dolomite and limestone; reservoir rocks of upper Paleozoic mainly include sandstone reservoir.
下古生界白云岩和灰岩为主要的储集岩类，上古生界则主要以砂岩储层为主。
The types of Carboniferous carbonate rocks in Tazhong area include grain limestone, grain dolomite and muddy to micritic dolomite.
塔中地区石炭系碳酸盐岩主要岩类为颗粒灰（云）岩和泥粉晶白云岩。
More than 500 samples of sandstone, limestone and volcanic rocks were collected from 61 sites.
从61个采点中采集了500多个砂岩、灰岩和火山岩岩芯。
More than 500 samples of sandstone, limestone and volcanic rocks were collected from 61 sites.
从61个采点中采集了500多个砂岩、灰岩和火山岩岩芯。
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