火山熔岩类主要包括玄武岩、粗面玄武岩、气孔杏仁状安山岩、粗面安山岩、流纹岩等。
The lavas mainly include basalt, dolerite, fumarolic, amygdaloidal andesite, trachy-andesite and as well as rhyolite.
经岩石力学分析，玄武岩抗压强度最大，粗面岩抗压强度相对较弱。
Through rock mechanics analysis, basalt has the most compression strength, while that of trachyte is relatively weaker.
欧利坨子地区沙三下亚段火山岩类型以火山碎屑岩为主，次为玄武岩及粗面岩。
The volcanic rocks of the Lower Es3 in Oulituozi region are mainly volcaniclastic rock, basalt and trachyte.
欧利坨子地区沙三下亚段火山岩类型以火山碎屑岩为主，次为玄武岩及粗面岩。
The volcanic rocks of the Lower Es3 in Oulituozi region are mainly volcaniclastic rock, basalt and trachyte.
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