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- The extrusive equivalent of granite is rhyolite. 而流纹岩则是与花岗岩成分相同的酸性喷出岩。
- The extrusive equivalentof granite is rhyolite. 而流纹岩则是与花岗岩成分相同的酸性喷出岩。
- Typical felsic rocks include granite and rhyolite. 典型的长英质岩石有花岗岩及与流纹岩。
- Hydrocarbon reservoir is discovered in the Mesozoic rhyolite by drillin... 经钻探,在该区中生界流纹岩中发现了油气藏。
- The features and the development law of rhyolite landforms are unique. 流纹岩地貌有其独有的特色和发育规律。
- The pyroclastic rock fragments comprise quartzite, schist, gneiss, basalt, andesite, rhyolite and quartz. 火成岩的碎块成分主要为石英岩、岩、麻岩、武岩、山岩和流纹岩.
- The rock assemblages of the Bayinbuluke formation are mainly alkaline basalt-thick andesite-alkaline rhyolite. 火山岩岩石组合以碱性玄武岩-粗安岩-碱性流纹岩为主。
- The orebodies are confined to Yanshanian metamorphosed rhyolite porphyry and felsite. 矿体赋存在燕山期变质流纹斑岩、霏细岩中。
- This material is a new find from Madagascar.The deposit formed as a rhyolite flow but has been completely silicified. 海洋石是从马达加斯加发现的,它的沉积物是流纹岩,但已完全硅酸化。
- The dome building is being driven by the rhyolite magma under the vent continues to rise and extrude onto the domes. 基因遭污染的二代台湾画眉外观多元且不完整,常具备部分陆眉特徵,且每一个体不太相同。
- Six refractory elements mobility was studied for altered rhyolite weathering profile in Longtang,Guangxi. 对广西龙塘蚀变流纹岩风化剖面中六个难溶元素的活动性进行了研究。
- But Iceland has various kinds of volcanoes, many of which produce more evolved lavas such as rhyolite and andesite. 但是冰岛有各种各样的火山,其中很多生产更逐步形成的象流纹岩和安山石那样的熔岩。
- Perlite, obsidian and pitchstone are volcanic glass having the same compositions commonly with rhyolite as well as andesite and basalt. 珍珠岩、黑耀岩和松脂岩等玻璃质熔岩以酸性为主,中基性者也常见。
- The first rock is mainly andesite clinkering agglomerate, andesite breccia, dacite breccia, rhyolite breccia and rhyolite clinkering tuff. 正常火山碎屑岩亚类岩石类型主要为安山质熔结集块岩,安山质、英安质及流纹质火山角砾岩以及流纹质熔结凝灰岩。
- Rhyolite with columnar joints has been found in the lower Cretaceous Yingcheng Formation, in an uplift area of the southeastern Songliao Basin. 摘要松辽盆地东南隆起区下白垩统营城组出露柱状节理流纹岩。
- You should note how the enhanced potassium values over the rhyolite plug within the area of basalts become progressively less obvious with increasing broader smoothing. 你应当注意的是,处于玄武岩区内的流纹岩岩颈上较高的钾浓度值,随着平滑程度的增大而逐渐变得不明显了。
- The volcanic rocks belong to high kalium calc alkalic series and can be divided into andesite, dacite, trachydacite and rhyolite by petrochemical composition. 据岩石化学成分,金刚台组火山岩可划分为安山质、英安质、粗面英安质和流纹质几种类型,并属于高钾钙碱性系列。
- Raw materials include breccia,siliceous rhyolite,quartzite,jasper,agate,dacite,obsidian and crystal,with breccia and siliceous rock being the most important stone materials. 两类细石核所采用的原料包括火山角砾岩、硅质岩、流纹岩、石英岩、碧玉、玛瑙、英安岩、黑曜岩及水晶等9种,以火山角砾岩和硅质岩为主,原料利用方面没有大的差别。
- The rock types include rhyolite, dacite and sedimentary volcaniclastic rocks, among which the lava tuff breccia was newly discovered in the 1:50000 region. 岩石类型为流纹岩、英安岩和沉火山碎屑岩,其中的熔结角砾凝灰岩是本次1:5万区调中的新发现。
- The eruption of Chaiten is unique because it is one of the very few rhyolite eruptions that has occurred in the last 300 years (so, since the birth of modern geology). 农委会特生中心与师大生命科学系合作调查发现,受污染比例已逾两成,如不及时控制,台湾画眉恐将灭种。台湾画眉基因渗漏现象,已引起国际重视。