Dormant volcanoes are those that are not currently active (as defined above), but could become restless or erupt again. Confusion however, can arise because many volcanoes which scientists consider to be active are referred to as dormant by laypersons or in the media.
Extinct volcanoes are those that scientists consider unlikely to erupt again. Whether a volcano is truly extinct is often difficult to determine. Since "supervolcano" calderas can have eruptive lifespans sometimes measured in millions of years, a caldera that has not produced an eruption in tens of thousands of years is likely to be considered dormant instead of extinct.
For example, the Yellowstone Caldera in Yellowstone National Park is at least 2 million years old and hasn't erupted violently for approximately 640,000 years, although there has been some minor activity relatively recently, with hydrothermal eruptions less than 10,000 years ago and lava flows about 70,000 years ago. For this reason, scientists do not consider the Yellowstone Caldera extinct. In fact, because the caldera has frequent earthquakes, a very active geothermal system (i.e., the entirety of the geothermal activity found in Yellowstone National Park), and rapid rates of ground uplift, many scientists consider it to be an active volcano.
2006-06-13 23:12:54
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answer #1
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answered by Anonymous
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Volcanoes are called extinct if the scientists think or assume the volcano is unlikely to erupt ever again. But whether the volcano is really extinct is very difficult to determine. So it's not sure that the volcano will never erupt again.
2006-06-14 06:36:05
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answer #2
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answered by Lilium Gustavia 2
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Remember Pinatubo in June 1991?
Nobody has explained the rules to the volcanoes, that if you're extinct you mustn't erupt. Never trust an expert.
2006-06-14 06:19:11
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answer #3
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answered by Tropic-of-Cancer 5
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Not extinct volcanoes. Dormant ones can.
2006-06-14 06:05:45
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answer #4
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answered by Scozbo 5
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No thats why they're called extinct. If they have just not errupted for some time but still could, they are called dormant.
2006-06-14 06:06:45
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answer #5
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answered by lindsay 4
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Volcanoes cannot be said to extinct.It may be not active or sleeping.There is still space inside the volcano.If matrials accumulate it may explode again.Chance may be less .
2006-06-15 06:43:14
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answer #6
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answered by leowin1948 7
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If it's extinct it means it can't erupt again.
2006-06-14 17:52:46
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answer #7
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answered by Anonymous
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no. but ones that were fought to be extinct have turned out to be only dormant in the past
2006-06-14 06:08:25
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answer #8
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answered by drunkredneck45 4
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i don't think so. once extinct, it will never erupt. however, if it has baby volcanoes around it like the krakatau volcano with its "anak krakatau" (baby krakataus) in indonesia , yes... it could erupt.
2006-06-14 06:12:12
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answer #9
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answered by anak sendu 4
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There called dead not extinct.
lf there dead then they can't erupt again, but they can erupt if there dormant.
That means they may not have erupted for years and years, but one day they will again.
2006-06-14 06:08:12
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answer #10
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answered by London girl 3
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