jalyn243
jalyn243
21-09-2016
Physics
contestada
what are two extrusive rocks
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WorldlyGlass49
WorldlyGlass49
21-09-2016
Extrusive igneous rocks form when magma reaches the Earth's surface a volcano and cools quickly. Most extrusive (volcanic) rocks have small crystals. Examples include
basalt, rhyolite, andesite,
and
obsidian.
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