Volcanoes and Plate Tectonics
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| show | Liquid rock produced under Earth's surface
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| show | Any activity that includes the movement of magma toward or onto Earth's surface
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| show | Magma that flows onto Earth's surface; the rock that forms when lava cools and solidifies
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| show | A volcanicallyactive area of Earth's surface, commonly far from a tectonic plate boundary
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| Ring of Fire | show 🗑
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| Subduction zone | show 🗑
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| show | A string of volcanic islands
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| Fissure | show 🗑
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| Mantle plume | show 🗑
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| Pluton | show 🗑
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| Batholith | show 🗑
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| Dike | show 🗑
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| show | Describes magma or igneous rock that is rich in magnesium and iron and that is generally dark in color
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| show | Describes magma or igneous rock that is rich in feldspars and silica anad that is generally light in color
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| Viscosity | show 🗑
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| show | Oceanic volcanoes that, because of mafic magma's low viscosity, gases escape from easily. Called so because they are usually quiet.
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| show | Forms pahoehoe rock when cooled. Wrinkly rocks when cooled. Means "ropy" in Hawaiian.
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| show | Forms Aa rock which looks like jagged rocks. Same composition as Pahoehoe lava, but different gas content and rate and slope of the lava flow.
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| Blocky lava | show 🗑
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| show | When felsic lavas erupt from continental volcanoes, the lava is cooler and stickier. They also contain trapped gases, so when a volcano erupts, they escape. Also tend to spray pyroclatic material.
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| Pyroclastic material | show 🗑
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| show | Pyroclastic particles that are less than 2 millimeters in diameter
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| Volcanic dust | show 🗑
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| Lapilli | show 🗑
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| Volcanic bomb | show 🗑
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| Volcanic block | show 🗑
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| Shield volcano | show 🗑
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| show | A volcano that has very steep slopes. Form from small explosive eruptions, made of pyroclastic material. Smaller than shield or composite volcanoes.
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| Composite volcano | show 🗑
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| Caldera | show 🗑
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2022291AC
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