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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 ...
Extinct volcanoes are those that scientists consider unlikely to erupt again, because the volcano no longer has a magma supply. Subcategories. This category has the ...
Ring of Fire. The Ring of Fire (also known as the Pacific Ring of Fire, the Rim of Fire, the Girdle of Fire or the Circum-Pacific belt) [note 1] is a tectonic belt of volcanoes and earthquakes. It is about 40,000 km (25,000 mi) long [1] and up to about 500 km (310 mi) wide, [2] and surrounds most of the Pacific Ocean.
Bora Bora has an area of 29.3 km 2 (11.3 sq mi) [10] on the mountainous central island, which is an extinct volcano, itself surrounded by a lagoon separated from the sea by a reef. The highest point is Mount Otemanu , at 727 m (2,385 ft).
The Cheviot (/ ˈ tʃ iː v i ə t /) is an extinct volcano and the highest summit in the Cheviot Hills and in the county of Northumberland. [1] [5] Located in the extreme north of England, it is a 1 + 1 ⁄ 4-mile (2-kilometre) walk from the Scottish border and, with a height of 2,674 feet (815 metres) above sea-level, is located on the northernmost few miles of the Pennine Way, [6] before ...
A thundering sound was heard from the mountain Batuwara [now called Pulosari, an extinct volcano in Bantam, the nearest to the Sunda Strait] which was answered by a similar noise from Kapi, lying westward of the modern Bantam [ is the westernmost province in Java, so this seems to indicate that Krakatoa is meant]. A great glowing fire, which ...
Mount Konocti / k oʊ ˈ n ɒ k t aɪ / is a volcano in Lake County, California on the south shore of Clear Lake.At 4,305 feet (1,312 m), it is the second highest peak in the Clear Lake Volcanic Field, which consists of numerous volcanic domes and cones ranging from 10,000 to 2.1 million years old.