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Comprehensive
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basalt a dense, fine-grained, dark-colored igneous rock created by lava flow that is rich in minerals containing magnesium and iron. The most common igneous rock on the Earth's surface due to its high abundance on the ocean floor.
cinder (pl.) any of various residues of burning, such as ashes, slag, or volcanic lava. [1/4 definitions]
coulee a running or solidified lava flow. [1/2 definitions]
eruct to spew forth violently, as lava from a volcano. [1/2 definitions]
extravasate to cause (molten lava) to flow forth from an underground source. [2/4 definitions]
pumice light, porous hardened lava, powdered or whole, used as an abrasive and polishing agent. [1/2 definitions]
scoria loose burnt lava cinders. [1/2 definitions]
slag the cinderlike lava from a volcano. [1/3 definitions]
spiracle a small vent on the surface of a lava flow, formed by gases. [1/3 definitions]
volcanic glass a natural glass produced by the rapid cooling of lava, such as obsidian or pitchstone.