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7
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a small, conical volcano built of ash and cinders.
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9
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describes all the processes associated with the discharge of magma, hot water, and steam.
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10
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a dense, destructive mass of very hot ash, lava fragments, and gases ejected explosively from a volcano.
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11
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a broad volcano built up from the repeated nonexplosive eruption of basalt to form a low dome.
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12
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a tube-like structure that allows lava to reach the surface.
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13
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the resistance of a substance to flow.
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14
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huge amounts of lava that erupt from fissures.
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17
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a large body of intrusive igneous rock believed to have crystallized at a considerable depth below the earth's surface.
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18
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small, mushroom-shaped pluton that forms when magma intrudes into parallel rock layers close the earth's surface
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1
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long cracks in earth
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2
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A large crater formed by volcanic explosion or by collapse of a volcanic cone.
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3
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a body of igneous rock formed beneath the surface of the earth by consolidation of magma.
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4
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opening in earth's crust through which lava erupts and focus out onto the surface.
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5
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unusually hot are in earth's mantle where high-temperature plumes of mantle material rise toward the surface.
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6
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irregularly shaped pluton that is similar to a batholith but smaller.
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7
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a volcano composed of steep, alternating layers of lava and pyroclastic materials.
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8
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pluton the cuts across preexisting rocks and often forms when magma invades cracks in surrounding rock bodies.
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15
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rock fragments and particles ejected by a volcanic eruption.
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16
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pluton that forms when magma intrudes parallel rock layers.
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19
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bowl-shaped depression that forms around the central vent.
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