effusive rock

基本解释

Eclogite-pyroxenite intrusive rock and tholeiite effusive rock are considered as the protorocks of two types of orthoamphibolites respectively.
原岩分别为榴辉岩—辉石岩侵入体和拉班玄武岩岩流。
In ascending order, the rock sequence is perlite→bentonite→hydrothermal breccia→rhyolite, and the facies sequence is volcanic conduit facies→effusive facies.
珍珠岩与其他岩石的序列关系为珍珠岩-膨润土-隐爆角砾岩-流纹岩。
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The porosity and permeability of typical basaltic rocks have been analyzed. Four effusive facies basalt layers and two volcanic necks with rock outcrops can be identified.
牛头山古火山历经四期喷发，地表可见四层喷溢相玄武岩层和两处火山颈相岩石出露。