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Data from the Global Volcanism Program of the Smithsonian Institution
Details for: Fonualei
Seen from the NE, Fonualei volcano is a small, less than 2-km-wide island that contains active fumaroles in the crater, which is breached to the SW with a fresh lava flow extending to the sea and forming a rugged shoreline. Blocky lava flows from a central cone have reached the sea through notches in the caldera rim. Eruptions have been recorded since 1791. Photo by Paul Taylor (published in Taylor and Ewart, 1997).
Volcano Number:
243100
Volcano Name:
Fonualei
Country:
Tonga
Volcano Type:
Stratovolcano
Last Eruption:
1957 CE
Elevation:
188m
Tectonic Setting:
Subduction zone / Oceanic crust (< 15 km)
Pop. within 5km:
71
Pop. within 10km:
71
Pop. within 30km:
91
Pop. within 100km:
17857
Latitude:
-18.023
Longitude:
-174.317
Details
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The small island of Fonualei (~2 km diameter) contains a fumarolically active crater breached to the SE with a fresh lava flow extending to the sea and forming a rugged shoreline. Steep, inward-facing scarps mark the rim of a partially exposed caldera. Blocky lava flows fill much of the northern caldera moat and reach the sea to the north and east. In contrast to the andesitic and basaltic rocks of other islands of the Tonga arc, Fonualei lavas are of dominantly dacitic composition. Eruptions have been recorded since 1791, with the largest taking place in June 1846, when explosive eruptions produced large pumice rafts, ashfall damaged crops on the island of Vava'u (70 km SSE), and ash was reported by vessels up to 950 km distant. In 1939 explosive and effusive activity occurred from summit and flank vents, and water spouts were reported 1.6 km SE of the island.
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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
Sorry. No emissions data found for this volcano.
Data from the Earthchem Library
Sorry. No data exist for this volcano in the EarthChem Library.
Data from the Earthchem Portal
Sorry. No data exist for this volcano in the EarthChem Portal.
Data from the SESAR Database
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Data from the MaGa Database
Sorry. No data exist for this volcano in the MaGa database.
Data from UNAVCO
Sorry. No data exist for this volcano in the UNAVCO database.
Data from USIEI
Sorry. This volcano is not covered by any USIEI projects
Data from IRIS FDSNWS
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