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An active volcano is a volcano that has erupted during the Holocene (the current geologic epoch that began approximately 11,700 years ago), is currently erupting, or has the potential to erupt in the future. [1] A volcano that is not currently erupting but could erupt in the future is known as a dormant volcano. [1]
Dormant volcanoes — of the current Holocene Epoch. See also: Category: Inactive volcanoes. Subcategories. This category has the following 3 subcategories, out of 3 ...
Volcanoes that are not currently active, but may be either dormant or extinct or of otherwise uncertain inactive volcanic status. Wikimedia Commons has media related to Inactive volcanoes . Subcategories
A once long-dormant volcano in Iceland is erupting again and impacting activity in a populated region nearby. The volcano, on the Reykjanes peninsula in southwestern Iceland, began erupting at ...
Volcanoes that were active in the Holocene Epoch (approximately 11,700 years ago to the present day), in the Quaternary Period of the Cenozoic Era. Active and dormant volcanoes of the Holocene epoch are in Category: Active volcanoes and Category: Dormant volcanoes .
Volcanoes vary greatly in their level of activity, with individual volcanic systems having an eruption recurrence ranging from several times a year to once in tens of thousands of years. [76] Volcanoes are informally described as erupting, active, dormant, or extinct, but the definitions of these terms are not entirely uniform among ...
Lassen Peak is dormant, meaning the volcano is merely inactive, and it has a functioning magma chamber under the ground still capable of eruptions. Thus it poses a threat to the nearby area through lava flows, pyroclastic flows, lahars (volcanically induced mudslides, landslides, and debris flows), ash, avalanches, and floods.
Volcanic gases are gases given off by active (or, at times, by dormant) volcanoes. These include gases trapped in cavities ( vesicles ) in volcanic rocks , dissolved or dissociated gases in magma and lava , or gases emanating from lava, from volcanic craters or vents.