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Lahar is an Indonesian word for a rapidly flowing mixture of rock debris and water that originates on the slopes of a volcano.Rounded, steep-sided mounds built by very viscous magma. |
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Volcanic domes or Lava domes are rounded, steep-sided mounds built by very viscous magma. |
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Lava is the word for magma (molten rock) when it erupts onto the Earth's surface.
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Hornito is a low mound of volcanic origin, sometimes emitting smoke or vapor.
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