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Lewotolo volcano (Lesser Sunda Islands, Indonesia) activity update: steaming, weak incandescence from summit lava dome
jeudi, févr. 02, 2012
Le 25 janvier CVGHM a abaissé le niveau d'alerte de Lewotolo de 3 à 2 (sur une échelle de 1 à 4) basé sur une diminution de sismicité et les observati... [details]
Lewotolo volcano (Lomblen Island, Indonesia): increased activity, 500 people evacuated
lundi, janv. 09, 2012
The remote Lewotolo stratovolcano on Lomblen island in Indonesia is getting more and more active, with reports of "black columns of smoke" coming out ... [details]

Lewotolo volcan

stratovolcan 1423 m / 4,669 ft
Petites îles de la sonde, Indonésie, -8.27°S / 123.51°E
Condition actuelle: en sommeil (1 sur 5)
Dernière mise à jour: 2 févr. 2012 (steaming, weak incandescence from summit lava dome)
Style éruptif tipique: Explosive
Eruptions du volcan Lewotolo: 1951, 1920, 1899, 1864, 1852, 1849, 1819, 1660
Lewotolo volcano on the eastern end of a peninsula of Lembata (formerly Lomblen) Island forms a perfect symmetrical cone. The stratovolcano has 2 craters of 900x800 m and 250x200 m in diameter.
Many lava flows have reached the coastline. Historical eruptions, recorded since 1660, have consisted of explosive activity from the summit crater.

Introduction:

Lewotolo's lavas are remarkable because they contain the rare mineral zirconolite (CaZrTi2O7).
Source/literature:
"Volatile-induced transport of HFSE, REE, Th and U in arc magmas: evidence from zirconolite-bearing vesicles in potassic lavas of Lewotolo volcano (Indonesia)" Jan C. M. de Hoog and Manfred J. van Bergen, Contributions to Mineralogy and Petrology, Volume 139, Number 4, 485-502