1.【地】凝灰岩
1.〈俚〉极佳的
1.a rock made up of very small volcanic fragments compacted together
1.The island is of volcanic origin, made of basaltic tuff and lava dating from the Miocene epoch.
这个岛起源于火山喷发，由玄武岩、凝灰岩和熔岩在中新世形成。
2.Oil shale always has the accompanying relationship with overlying sedimentary tuff or other tuffaceous strata.
油页岩常与上覆沉凝灰岩或其它凝灰质岩石呈伴生关系。
3.Update to assessment of direct disposal in unsaturated tuff of spent nuclear fuel and high-level waste owned by U. S. department of energy.
美国能源部乏核燃料和高放废物在不饱和和凝灰岩中直接处置的评价改进…[中国核科技信息与经济研究院]。
4.Typical features of subaqueous volcanic rocks include perlite with glassy structure and pillow structure, lamellar tuff, bentonite.
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。
5.Cracks in the hard upper layer allowed water and wind to channel away at the softer layer of tuff, leaving pillars.
裂缝很难让上层水，风的渠道以外的软层凝灰岩，使支柱。
6.We define the main rock type is variety limestone and dolomite , the followed is anhydrite, detrital rock and tuff in turn.
确定了研究区奥陶系马家沟组岩石类型主要以各类石灰岩与白云岩为主，硬石膏岩次之，少量碎屑岩及凝灰岩。
7.Jurassic volcanic rocks in Yingshan fault depression are mainly andesite, basalt, dacite , volcanic breccia and tuff.
莺山断陷侏罗系火山岩主要为安山岩、玄武岩、英安岩、火山角砾岩及凝灰岩。
8.The results suggest that the volcanic reservoir rocks are mainly dacite and volcanic breccias, then basalt and tuff.
结果表明，塔河地区二叠系火山岩储集层主要为英安岩和火山角铄岩，其次为玄武岩和凝灰岩。
9.The extrusive rock unit includes basalt, andesite, boninite and albitite as well as breccia and tuff.
喷出岩单元不仅仅由玄武岩组成，还包括安山岩、玻安岩、钠长岩以及角砾岩、凝灰岩等。
10.Over the tuff, a thinner layer of harder volcanic rock, like basalt, formed from lava flows.
在凝灰岩，更薄一层难以火山岩，如玄武岩，形成由熔岩流。