05. igneous_06 - IGNEOUS ROCKS 1) Know what to call liquid...

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IGNEOUS ROCKS 1) Know what to call liquid hot rock underground versus on the surface. Magma underground, lava on surface 2) Know what to call an igneous rock that cooled and crystallized underground and what to call one that formed on the surface and what their relative crystal sizes are. Inside: intrusive, plutonic Surface: extrusive, volcanic 3) Know the five principal igneous rock textures and their definitions. a. Phaneritic – visible crystals b. Aphanitic – not visible crystals c. Glassy – no crystals d. Pegmatitic – crystals larger than 1 inch across e. Porphyritic – large crystals surrounded by small crystals 4) Know the three types of magma and what about them makes them different from each other. Basaltic(Mafic) = low silica –Tend to be dark colored (black to green) –Low viscosity (runny) •Andesitic(Intermediate) = medium silica –Tend to be grey to grey-pink or black and white (“salt and pepper”) •Rhyolitic(Felsic) = high silica –Tend to be pink to red
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05. igneous_06 - IGNEOUS ROCKS 1) Know what to call liquid...

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