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碱性岩 | |||
基性岩 | |||
碱性岩 (石); 盐基性岩; 碱性岩石 | |||
基〔碱〕 性岩 | |||
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基性岩 (SiO₂ 总量约为45%basic 53%的一类火成岩,如辉长岩、辉绿岩和玄武岩等。特点是 SiO₂ 量虽比超基性岩高但仍不饱和,Fe、Mg 含量减少而 Ca 含量增加,故岩石中含多量的基性斜长石,不含石英) | |||
碱性岩类; 基性岩类 |
basic rock : 18 phrases in 8 subjects |
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