Igneous_lecture - Instruction: View full-screen images in...

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Instruction: View full-screen images in the Slide Show mode of display. Read the explanatory notes in the Normal View mode of display.
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IGNEOUS ROCKS Making magma Classification of igneous rocks Basalt: mafic, extrusive Other volcanic rocks: styles of eruption Dikes, sills Granite: felsic, intrusive READ Chap. 5. Igneous rocks lab: Chap. 6
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IGNEOUS ROCKS Making magma Classification of igneous rocks Basalt: mafic, extrusive Other volcanic rocks: styles of eruption Dikes, sills Granite: felsic, intrusive
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MAGMA : a hot, complex mixture of: melted silicate material ( liquid ) already solidified crystals, or crystals from the magma source rock that had never melted ( solid ) dissolved gases LAVA : magma erupted at the earth’s surface
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MAKING MAGMA : where does lava come from? from the earth’s liquid core? from completely melted mantle: a universal pool of magma? from isolated chambers of magma in the crust and mantle?
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Lower the pressure (decompression melting). 3.
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Igneous_lecture - Instruction: View full-screen images in...

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