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It is hard to distinguish between a dormant and extinct volcano, but it will be considered dormant if it has not showed signs of eruption over several spans of its recharge period. For example, a volcano that has been known to erupt every twenty years might be considered dormant if it goes sixty years without erupting.

Signs that a volcano might be dormant and is not nearing an eruption include:

-Does not produce smoke or sulfuric smell from vents or crater

-Lava cannot be viewed in or near the volcano, or can only be found very deep inside the crater

-No tremors or small earthquakes have been detected in the area around the volcano for a long period of time

-Small plants and trees have grown naturally on the cone. (More plant life than moss or lichen)

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12y ago

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