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Data from the Global Volcanism Program of the Smithsonian Institution
Details for: Ascension
A view to the NW from Green Mountain shows The Sisters (left) and Perfect Crater (right-center), cinder cones on the flanks of the Ascensión Island volcano, which lies just west of the Mid-Atlantic Ridge. The isolated island contains numerous cones and lava domes. Many volcanic features on Ascensión have a very youthful appearance, and three eruptions have been dated within the past 2,000 years, the most recent being the South Sisters flow, possibly only 500 years old. Photo by Jon Davidson (University of Durham).
Volcano Number:
385050
Volcano Name:
Ascension
Country:
United Kingdom
Volcano Type:
Stratovolcano
Last Eruption:
1508 CE
Elevation:
858m
Tectonic Setting:
Rift zone / Oceanic crust (< 15 km)
Pop. within 5km:
614
Pop. within 10km:
1149
Pop. within 30km:
1149
Pop. within 100km:
1149
Latitude:
-7.95
Longitude:
-14.37
Details
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Ascensión Island, located just west of the Mid-Atlantic Ridge, was discovered on Ascensión Day in 1501 by the Portuguese navigator Joao da Nova. It is the broad emergent summit of a massive stratovolcano that rises 3000 m above the sea floor. The isolated island is dotted with more than 100 youthful parasitic cones and lava domes, many aligned along two fissures. Basaltic rocks dominate on the island, but trachytic lava domes are also present, mostly on the eastern side. Although no eruptive activity has occurred since its discovery, many volcanic features have a very youthful appearance. Two of the youngest lava flows were erupted from flank vents and reached the sea on the N and S coasts. Argon-Argon dating by Preece and others (2018) identified three eruptions within the past 2,000 years.
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Eruption Data from the Global Volcanism Program of the Smithsonian Institution
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Emissions Data from the Global Volcanism Program of the Smithsonian Institution
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Data from the Earthchem Library
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Data from the Earthchem Portal
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Data from the SESAR Database
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Data from the MaGa Database
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Data from UNAVCO
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Data from USIEI
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Data from IRIS FDSNWS
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