A soft, porous limestone, composed essentially of fragments of shells and coral, used as a building material.
贝壳灰岩一种质软、多孔的灰岩，基本上由贝壳及珊瑚的碎片构成，用作建筑材料
caprinid biosparite
双壳类生物亮晶灰岩
The types of reservoirs main include base rock weathering crust, sandstone, tuffaceous sandstone and conglomerate.
储层类型主要包括基岩风化壳、岩、灰质砂岩和砾岩。
An opening in the earth's crust through which molten lava, ash, and gases are ejected.
火山地壳的开口，火中喷出熔岩、灰尘和气体
The Liuhe area belongs to the Archaeozoic high -g rade metamorphic belt,the outcropping rocks are mainly gray gneisses,supracrusta l rocks are rarely.
溜河地区属太古宙高级变质区,出露岩石以灰色片麻岩为主,表壳岩稀少。
Rock, usually limestone, composed of oolites.
岩石岩石，通常指石灰岩，由鲕粒岩组成
sedimentary rocks,eg sandstone,limestone,slate
沉积岩（如砂岩、石灰岩、板岩）.
packed intramicrite
密集内碎屑微晶灰岩
sparry intraclastic calcarenite
亮晶内碎屑砂屑灰岩
sandy algal biosparite
砂质藻屑生物亮晶灰岩
pellet-bioclastic grainstone
球粒生物屑粒状灰岩
There are four principal types of limestones.
石灰岩有四种主要类型。
Robeston Wathen limestone
罗伯斯顿·瓦辛石灰岩
dolomitic biomicrite
白云石质生物微晶灰岩
sandy algal biomicrite
砂质藻屑生物微晶灰岩
magnesian limestone
白云石, 含镁石灰岩
The volcano ejected lava and ashes .
火山喷出熔岩和灰。
sandy intrasparite
砂质内碎屑亮晶灰岩