volcanics meaning in English

火山岩
近地表火成岩

The volcanics are most commonly andesitic in composition .
火山岩的组成最通常是安山岩。
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。
On metallogenic characteristics of the volcanics - type uranium deposits and their ore prospects in jiangxi province
江西火山岩型铀矿成矿特征及找矿前景
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。
Basic features and genesis of the early - middle cambrian epoch volcanics in the xiangmaoshan district of western part of northern qilian
中寒武世基性火山岩基本特征及其成因

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