Home >> Flashcards >> Geology >> Geology Midterm #1 Vocab.
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| a vast composite, intrusive, igneous rocks, formed by the intrusion of numerous plutons in the same region |
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| a type of fracturing that yields roughly hexagonal columns of basalt; form when a dike, sill or lava flow cools |
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| The change in temperature with depth in the Earth |
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| magma or igneous rock that are low in silica and rich in iron and magnesium |
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| igneous rocks that are rich in elments forming feldspar and quartz |
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| molten rock that has flowed out onto the Earth's surface |
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| the melting in a rock of the minerals with the lowest melting temperatures, while other minerals remain solid |
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| molten rock beneath the earth's surface |
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| a coarse-grained instrusive silicic igneous rock |
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| a coarse-grained intrusive mafic igneous rock |
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| a coarse-grained ultramafic rock |
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| a fine-grained mafic igneous rock |
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| magma and lava that are rich in iron and magnesium very low in silica |
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