查询词典 volcanic tuff

This paper studied the lithologic characteristics, porosity and its evaluation, forming mechanisms of six kinds of volcanic rocks, and analyzed the evaluation history and the key factors about the main volcanic reservoirs, including andesite, basalt and tuff, etc.

对研究区火山岩岩性特征、储集空间类型、孔隙演化特征及其主要影响因素进行了深入分析，研究了区内6种火山岩的岩性特征及4个亚类储集空间的发育特征，深入分析了区内主要的火山岩储层如安山岩、玄武岩、火山角砾岩和凝灰岩等的孔隙演化过程及其控制因素。

Based on the natural gamma log curve s of acid tuff and clay rocks of acid volcanic events,the author here queries the arguments that radioactive intensity of sedimentary strata will grow with the increasing argillaceous materials and that the natural gamma value and the empirical equation can be used to calculate contents of argillaceous materials.

根据酸性凝灰岩和酸性火山事件粘土岩的自然伽马测井曲线，对当前流传的"沉积岩层的放射性强度随泥质含量的增加而增高"的概念和用自然伽马值及经验公式求泥质含量提出质凝。

Firstly, the volcanics and shaly sand were separated with FMI static images and conventional logging data. Then, the image characteristics of all typical volcanics were analyzed with the dynamic FMI images to establish the FMI image patterns of volcanic lava (including rhyolite, dacite, andesite, and basalt) and volcaniclastic rock (including volcanic breeds and tuff).

首先利用FMI静态图像和常规测井曲线将砂泥岩与火山岩区分开来；然后利用FMI动态图像分析了火山岩各种岩性的图像特征，归纳总结出火山熔岩类（流纹岩、英安岩、安山岩、玄武岩）和火山碎屑岩类的FMI图像模式。

Also on the analysis of geochemical data, it is sugested that the composition of eclogite is not simple butacombination of terrestriaI tholeiite and basic volcanic tuff and marl.

同时根据地球化学资料等分析，认为榴辉岩的成分不是单一的，一部分为大陆拉斑玄武岩、一为基性的火山凝灰岩和泥灰岩。

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。

A volcanic rock formed by the welding together of tuff material from an explosive volcanic eruption .

火山喷发的活火山喷发的，与活火山喷发有关的，由活火山喷发而组成的

Diamond Head is the name of a volcanic tuff cone on the Hawaiian island of O?ahu and known to Hawaiians as Lē?ahi, most likely from lae 'browridge, promontory' plus ?ahi 'tuna' because the shape of the ridgeline resembles the shape of a tuna's dorsal fin.

钻石头的名字是火山凝灰岩锥的夏威夷群岛的瓦胡岛和已知夏威夷作为Lēahi ，最有可能从角' browridge ，海角'加阿伊'金枪鱼'，因为形状的山脊线的形状类似于一个金枪鱼'县背鳍。

He soils in Terbanggi and Gunung Madu derived from acid volcanic tuff sediments on an old coastal plain and developed under tropical humid conditions (mean annual temperatures: 23-32℃, mean annual precipitation: 2400 - 2600 mm) and Imperata cylindrica vegetation.

erbanggi和Gunung Madu地区的土壤是在热带湿润（年均温度23~32度；年均降雨量2400~2600毫米）、古滨海平原上酸性火山凝灰岩沉积物，植被为白茅的条件下形成的。

Petrological and petrochemical characteristics show that there exist such volcanic and subvolcanic rock types as basalt, iddingsite olivine basalt, olivine basaltic trachyandesite, trachybasalt, latite, trachydacite, trachyte, rhyolite, tuff and granite-porphyry in northeast Jiangxi Province. The volcanic rocks can be subdivided into high K calc-alkaline series, shoshonite series and alkaline basalt series.

岩石学及岩石化学特征表明，赣东北地区早白垩世火山岩及次火山岩主要有：玄武岩、伊丁石化橄榄玄武岩、橄榄玄武粗安岩、粗面玄武岩、安粗岩、粗面英安岩、粗面岩、流纹岩、凝灰岩及花岗斑岩等，可划分为高钾钙碱性、橄榄安粗岩和碱性玄武岩3个系列。

The main body of the outcropping rock layer is composed of deep gray trachyte of Baitoushan formation of mid-Pleistocene series and yellow, brown yellow volcanic-tuff crust of weather. This kind of structure that weak layers and hard layers emerge alternately contributes to the instability of rock mass.

长白山一带出露的地层主体为中更新统白头山组深灰色粗面岩及黄色、褐黄色火山凝灰岩、火山灰风化壳，这种软硬相间的层状地层组合为岩体的失稳创造了条件，岩体失稳产生的堆积物为泥石流准备了充足的固体物质。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。