Volcano Type: Lava domes
Volcano Status: Radiocarbon
Last Known Eruption: 1660 ± 30 years
Summit Elevation: 805 m 2,641 feet
Latitude: 19.12°S 19°7’0″S
Longitude: 177.98°E 177°59’0″E
Nabukelevu volcano (805 m) is a small (ca. 3.4 km3) hornblende/biotite–andesite dome–breccia complex. It is the youngest in a Plio–Pleistocene series of volcanoes related to a presently inactive subduction zone in southern Fiji. There are new evidence of up to four Holocene eruption episodes from this volcano, with onshore evidence of the latest activity post-1686±40 years BP, and offshore evidence of tephra falls between 2250±70 and 780±50 years BP. Scoriaceous pyroclastic flow deposits of one eruptive episode contain pottery fragments, presumably entrained from habitation areas during emplacement. Like many composite edifices in moist climates, Nabukelevu is prone to failure, the propensity in this case exacerbated by up to three edifice-cutting fault zones.
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Originally posted 2010-11-10 04:25:44.
