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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]
A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. The process that forms volcanoes is called volcanism. On Earth, volcanoes are most often found where tectonic plates are diverging or converging, and because most of Earth ...
Mount Kilimanjaro (/ ˌkɪlɪmənˈdʒɑːroʊ /) [3] is a dormant volcano in Tanzania. It is the highest mountain in Africa and the highest free-standing mountain above sea level in the world: 5,895 m (19,341 ft) above sea level and 4,900 m (16,100 ft) above its plateau base. It is also the highest volcano in the Eastern Hemisphere and the ...
The volcano was dormant from 1977 then showed signs of unrest since 1991 with strong seismic activity and ground-fracturing events, as well as the formation of small mud geysers on parts of the island. An eruption occurred in January 2020. Kanlaon Volcano, the most active volcano in the central Philippines, has erupted 25 times since 1866 ...
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.
Campi Flegrei, a large dormant volcano near Naples, has a history of eruptions, and the last one was in 1538. Recently, increased seismic activity and rising land levels have raised concerns among ...
White shading is selected caldera features. Mount Taranaki (Māori: Taranaki Maunga, also known as Mount Egmont) is a dormant stratovolcano in the Taranaki region on the west coast of New Zealand's North Island. [ 5 ][ 6 ] At 2,518 metres (8,261 ft), it is the second highest mountain in the North Island, after Mount Ruapehu.
The volcano was dormant for about half of last century, but rumbled back to life with a series of relatively small eruptions beginning in the 1990s. The government ordered evacuations then, and ...