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| a measure of a fluid's resistance to flow. |
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| an opening in the surface of the Earth through which molten rock and gases are released |
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| the volcanic rock ejected during an eruption including ash, bombs, and blocks |
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| a mountain formed of lava and/or pyroclastic material |
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| the depression of the summit of a volcano or that which is produced by a meterorite impact |
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| a broad, gently sloping volcano built from fluid basaltic lavas |
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| a small volcano built primarily of pyroclastic material ejected from a single vent |
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| a volcano composed of both lava flows and pyroclastic material |
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| a large depression typically caused by collapse or ejection of the summit area of a volcano |
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| an intrusive igneous structures the results from the cooling and hardening of magma beneath surface of Earth |
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| a tabular igneous body formed when magma is injected along sedimentary bedding surfaces |
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| a massive igneous body intruded between pre-exiting strata |
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| a tabular- shaped intrusive igneous feature that occurs when magma is injected into fratcures in surrounding area |
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| the gradual increase in temp. with depth in the crust; average is 30c per kilometer |
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| melting due to a drop in confining pressure that occurs as rock rises |
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| igneous activity that occurs within a tectonic plate away from plate boundaries |
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| general term for the processes of folding, faulting, shearing, compression, or extension of rock |
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| the force per unit area acting on a solid |
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| the change in shape or volume of a body of rocks as result of stress |
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| a fold in sedimentary strata resembling an arch |
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| a linear downfold in sedimentary starta opposite of anticline |
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| a large step-like fold otherwise horizontal sedimentary strata |
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| a fault in which the rock above the fault has moved down relative to the rock |
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| a fault in which the material above the fault plane moves up in relation to material below |
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