The volcanics are most commonly andesitic in composition.

火山岩的组成最通常是安山岩.

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Rock fragments, including volcanics, are common, and the matrix consists largely of kaolin and illite.

常见有岩石碎块, 包括火山岩屑, 基质大部分为高龄土和伊利石.

辞典例句

Marine volcanics of Early Ordovician was found in Zhifang region.

摘要纸房地区具有早奥陶世海相火山岩存在.

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Granite greenstone - hosted , meta - clastics - hosted , volcanics - subvolcanics hosted and sedimentary rock - hosted micro - disseminated gold deposits are of industrial value.

具有工业价值的金矿类型以花岗岩 - 绿岩型、变碎屑岩型 、 微细 浸染型 、 火山-次火山岩型为主.

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Its petrochemical characteristics show that the volcanics was formed in oceanic island tectonic environment.

岩石化学特征表明火山岩形成于洋岛构造环境.

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Gold deposits in the Pingxiang area are controlled by faults and hosted in acid volcanics.

凭祥地区金矿床受断层构造与酸性火山岩的双重控制.

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The subdivision has both scientific and practical significance on studying volcanics, geological structures and minerals.

火山岩分区的划分对火山岩 、 地质构造和矿产的研究具有重要的意义和实用价值.

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ReHeTai oil field has many oil - bearing strata, among them the volcanics is one the important reservoir.

热河台油田具有多套含油层系, 其中火山岩也是热河台油田的重要储层之一.

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