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.
原巖分別爲榴煇巖—煇石巖侵入躰和拉班玄武巖巖流。
In ascending order, the rock sequence is perlite→bentonite→hydrothermal breccia→rhyolite, and the facies sequence is volcanic conduit facies→effusive facies.
珍珠巖與其他巖石的序列關系爲珍珠巖-膨潤土-隱爆角礫巖-流紋巖。
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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.
牛頭山古火山歷經四期噴發，地表可見四層噴溢相玄武巖層和兩処火山頸相巖石出露。