粗安岩(trachyandesite)又称粗面安山岩。原指成分介于粗面岩与安山岩之间的一种火山岩。含近等量碱性长石和斜长石的火山岩。粗安岩成分与二长岩相当的、介于粗面岩和安山岩之间的火山岩。
火山岩岩石组合以碱性玄武岩-粗安岩-碱性流纹岩为主。
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 rock assemblages of the Bayinbuluke formation are mainly alkaline basalt-thick andesite-alkaline rhyolite.
火山岩主要岩石类型为粗安岩,少量粗面岩、玄武粗安岩、白榴石玄武粗安岩;
The main rock type of the volcanic rock is trachyandesite with small amounts of trachyte, basaltic-trachyandesite and leucite basaltic-trachyandesite.
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