Welded tuff is commonly rhyolitic in composition.
焊接凝灰岩在组成上通常为流纹岩。
The Lubaka tuff does not contain minerals that can be dated radiometrically.
路贝卡凝灰岩并不包含能通过放射性来确定年代的矿物质。
The sedimentary rocks are graywacke, siltstone, tuff andpellitie, etc.
沉积岩有杂砂岩、粉砂岩、凝灰岩、泥质岩等。
Mountain mainly by rhyolite and tuff composition, there are local granite.
山体主要由流纹岩和凝灰岩构成，局部有花岗岩。
Its heat reservoir is composed of Yanshanian granite-porphyry and tuff of Mesozoic.
热储由中生代燕山期花岗斑岩、凝灰岩组成。
Its heat reservoir is composed of Yanshanian granite - porphyry and tuff of Mesozoic.
热储由中生代燕山期花岗斑岩、凝灰岩组成。
The migration behavior of Sr in tuff was studied in both batch and column experiments.
用动态柱实验法和静态批式法研究了放射性锶在凝灰岩中的吸附和迁移。
The pyroclastic rocks which transit to lava mainly have breccia lava and tuff lava etc.
向熔岩过渡的火山碎屑岩主要为角砾熔岩和凝灰熔岩等。
The Qimagou Pb-Zn deposit occurs between onyx siliceous marble and volcanic tuff of the Xiong 'er Group.
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。
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。
The volcanics in the Beishan area, consisting mainly of lava and tuff, are well developed and linearly distributed.
北山地区火山岩发育，以熔岩和凝灰岩为主。
The buried hill tuff oil pool of Hanan Oilfield has an unconformable contact with overlying sandstone of Aershan Group.
哈南油田凝灰岩潜山油藏与上覆阿尔善组的砂岩油藏呈不整合接触。
The Machadodorp tuff and agglomerate, which is higher-lying than the Ongeluck lave, is known only from the Eastern Transvaal.
层位较昂格鲁克岩流为高的马却多多普凝灰岩及集块岩，只见于德兰士瓦东部。
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。
The two early Carboniferous fragments are composed of Basalt and ash-black, fuchsia radiolaria silicalite, siliceous mudstone, tuff.
早石炭世两个断片由玄武岩和灰白色、紫红色放射虫硅质岩、硅质泥岩、凝灰岩组成。
The two early carboniferous fragments are composed of basalt and ash - black, fuchsia radiolaria silicalite, siliceous mudstone, tuff.
早石炭世两个断片由玄武岩和灰白色、紫红色放射虫硅质岩、硅质泥岩、凝灰岩组成。
The vitric tuff of Linli in Hunan may become a qualified synthetic material of zeolite molecular sieve after it is pretreated adequate1y.
经适当预处理，湖南临澧玻屑凝灰岩可成为沸石分子筛的合成原料。
The thickness of sedimentary tuff beds are small, but they are widely distributed and their extension along strike are relatively stable.
这些凝灰岩层厚度虽小，但分布较广泛，走向延伸稳定。
The main reason of stone desert formation in the upper reaches of Beiru River- a tributary of the Huai River, is that tuff break up when watering.
凝灰岩的遇水分解是导致淮河二级支流北汝河上游产生石漠化的主要原因。
For decades, many geologists assumed that a series of distinct eruptions over millions of years must have occurred to produce the extensive Bishop tuff.
数十年来，许多地质学家认为，过去数百万年必定发生了一连串的个别喷发，才能造成广大的毕夏普凝灰岩。
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.
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；
Thus the preferential exploitation of the vitric tuff in high level is synthesis of zeolite molecular sieves and a series of products made from the synthetic zeolites.
因而，沸石分子筛的合成及其系列产品开发是玻屑凝灰岩深层次开发利用的优先发展方向。
The regional tectonic evolution characteristics of "green tuff region" and "Non green tuff region" and their relationship with uranium mineralization are elaborated in depth.
深入阐述“绿色凝灰岩区”和“非绿色凝灰岩区”的区域构造演化特征以及与成矿的关系。
For example, in Xujiaweizi area, pores as a result of feldspar corrosion in rhyolitic ignimbrite and rhyolitic tuff make up of 18.61% and 13.71% respectively of the all the porosity.
长石溶蚀产生的次生孔隙对于该区天然气储集空间的贡献很大，经统计分析可知在流纹质熔结凝灰岩和流纹质凝灰岩中的长石溶孔分别占孔隙度的18.61％和13.71％。
The Saliyak melange consists of dark-gray to black muddy and silty microclastic rock with intercalation of grayish purple and grayish green calcareous and muddy shale, marl and tuff.
西昆仑赛力亚克混杂堆积由形态、颜色和大小各异的沉积岩块体以及黑色泥质粉砂岩夹灰紫绿色钙质页岩、泥灰岩和层凝灰岩的基质组成。
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.
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。
Bao ancient group plans for a major deep-sea - a half deep in the ash, black ash-like TLC tuffaceous siltstone, shale tuffaceous, with gray green, with thin gray-tuff interbedded uneven.
包古图组主要为一套深海—半深海相的灰、灰黑色薄层状凝灰质粉砂岩、凝灰质泥岩，与灰绿色、灰色薄层状沉凝灰岩不均匀互层。
The simulative experiment shows that tuff fillings is obviously dissolved under the acid conditions. And with higher acid concentration, the dissolving ability of tuff fillings is intensive.
溶蚀模拟实验表明，在酸性水环境中，凝灰质填隙物发生明显溶蚀，并且酸性介质浓度越高溶蚀作用越强烈。
This thesis explains the results of a series of tests done to explore the feasibility of using the Tuff excavated in Jiudian as active admixture in Cement industry.
本文阐明了九店凝灰岩用作水泥工业活性混合材料的可行性。
This thesis explains the results of a series of tests done to explore the feasibility of using the Tuff excavated in Jiudian as active admixture in Cement industry.
本文阐明了九店凝灰岩用作水泥工业活性混合材料的可行性。
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