Magma (or lava if erupted to the surface) is composed of liquid, solid (mineral crystals) and gas. Its composition is largely controlled by its source. The image shown above is a pahoehoe basalt flow.
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 is composed of liquid, solid (mineral crystals) and gas. Its composition is largely controlled by its source. The image shown above is a pahoehoe basalt flow.&media=https://s3.amazonaws.com/images.powershow.com/P1256588938baQKV.pr.jpg)
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