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Lewotolo volcano (Lesser Sunda Islands, Indonesia) activity update: steaming, weak incandescence from summit lava dome
Donnerstag, Feb 02, 2012
Am 25. Januar gesenkt CVGHM die Alarmstufe für Lewotolo von 3 auf 2 (auf einer Skala von 1-4) basierend auf verminderte Seismizität und visuelle Beoba... [mehr]
Lewotolo volcano (Lomblen Island, Indonesia): increased activity, 500 people evacuated
Montag, Jan 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 ... [mehr]

Lewotolo Vulkan

Schichtvulkan 1423 m / 4,669 ft
Lesser Sunda Islands, Indonesien, -8.27°S / 123.51°E
Aktueller Status: nicht aktiv (1 von 5)
Letztes Update: 2 Feb 2012 (steaming, weak incandescence from summit lava dome)
Typische Aktivität: Explosiv
Ausbrüche des 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.

Beschreibung:

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