地质学上，此石材属于火山凝灰岩。
In petrographic terms, this stone is defined as volcanic tufa.
骑马沟铅锌矿赋存于熊耳群条纹状硅质大理岩与火山凝灰岩之间。
The Qimagou Pb-Zn deposit occurs between onyx siliceous marble and volcanic tuff of the Xiong 'er Group.
本发明方法以锰渣作为轻骨料与火山凝灰岩石粉、粉煤灰和水泥混合压制成墙体砌块。
The method takes the manganese slag as the lightweight aggregate to be mixed with the volcanic tuff stone powder, the fly ash and the cement, thus producing the wall block by pressing.
黄石公园里有三个幽深的峡谷。它们通过那些延续了64万年的河流斜着穿过黄石高原的火山凝灰岩。
Three deep canyons are located in the park, cut through the volcanic tuff of the Yellowstone Plateau by rivers over the last 640,000 years.
一个荷兰探险家发现了这座岛屿。后经考证，石像是在800至1722年之间，由当地采掘的凝灰岩——一种柔软的火山石雕琢而成。
They were carved from locally quarried tufa-a soft volcanic stone-between 800 and 1722, when a Dutch explorer discovered the island.
上下两层凝灰岩的生成年代无法区别，它们都诞生于440万年前，这意味着短时间内的两次火山喷发——也许只间隔了短短的一千年——将化石俘获在其间。
The dates of these tuffs proved indistinguishable-4.4 million years for both. This meant the volcanic eruptions had captured between them a focused lens of time-perhaps as little as a thousand years.
二叠系储集层主要由碳酸盐岩、沉凝灰岩、碎屑岩和火山岩组成。
The reservoirs in Permian is consist of carbonate rock, tuff, clastic rock and volcanic rock.
水下喷发火山岩典型标志为珍珠岩、玻璃质结构、枕状构造、纹层状凝灰岩和膨润土。
Typical features of subaqueous volcanic rocks include perlite with glassy structure and pillow structure, lamellar tuff, bentonite.
火山碎屑岩可见熔集块岩、熔角砾岩和熔结凝灰岩。
The volcaniclastic rocks can be seen as fused lumps, fused breccias and fused tuffs.
通过对加利福尼亚主教凝灰岩（76万年前此地曾发生过一场超级火山喷发）浮石中的石英晶体进行显微分析，研究者们确定了这一结论。
Researchers have determined this based on a microscopic analysis of quartz crystals in pumice from the Bishop Tuff in California, the site of a super-eruption 760,000 years ago.
第三段以凝灰岩、铁质白云岩、晶屑凝灰岩、火山角砾岩为主。
The thrid part are tuff, ferruginous dolomite, crystal tuff and volcanic breccia.
形成是侵蚀遗迹是一个火山塔称为凝灰岩锥。
The formation is the eroded remains of a volcanic tower known as a tuff cone.
本文揭示了火山角砾岩筒形成中侵入凝灰岩化过程的主导作用、火山角砾岩筒参数和含矿性与岩浆活动专属性的关系。
The leading role of tuffisitization processes in formation of diatremes, parameters and ore content of diatremes relation to peculiarities of the magmatism manifestation are revealed.
北山地区火山岩发育，以熔岩和凝灰岩为主。
The volcanics in the Beishan area, consisting mainly of lava and tuff, are well developed and linearly distributed.
二连油田某地区有一套沉凝灰岩储层，该储层具有与正常的沉积岩、火山碎屑岩不同的测井响应特征，即高中子、低密度、声波时差无反应。
There is a layer of tuffite reservoir in Erlian oilfield. The log responses of this tuffite reservoir are different from those of normal sedimentary rock and pyroclastic rock.
研究表明，馆陶组火山岩主要类型为玄武岩和凝灰岩，不同火山岩类型间具有不同的测井响应特征；
The study suggests that the types of volcanic rock of GuanTao formation in this area are chiefly tuff and basalt, and different types have different log responses.
洪流沿着凝固了的凝灰岩表面流去，把第一次火山爆发以后残存下来的几棵干枯的树干都摧毁了。
The torrent flowed along the surface of the hardened tufa, and destroyed the few meager skeletons of trees which had withstood the first eruption.
凝灰岩锥形成时，岩浆从火山内陆到达大海，溅射层层叠叠的玄武岩火山灰，最终上升到这个纪念碑的自然状态。
Tuff cones are formed when magma from an inland volcano reaches the sea, sputtering layer upon layer of basalt ash that eventually rises into this monument of nature.
凝灰岩锥形成时，岩浆从火山内陆到达大海，溅射层层叠叠的玄武岩火山灰，最终上升到这个纪念碑的自然状态。
Tuff cones are formed when magma from an inland volcano reaches the sea, sputtering layer upon layer of basalt ash that eventually rises into this monument of nature.
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