Give an example of extrutive and instructive rocks
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Examples of intrusive igneous rocks include rhyolite, andesite and basalt. When magma cools close to the earth's surface, as in the case of volcanic eruptions, more rapid cooling creates smaller crystals. These rocks are classified as extrusive igneous rocks. Examples include granite, obsidian and pumice....
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example for extrusive rocks are:basalt obsidian
example for intrusive rocks are:granite gabbro
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