BackgroundSavo volcano contains lava domes of historical age on the crater floor and its NE rim. Older domes occur on the flanks of the volcano. Pyroclastic flows and mudflows that traveled down valleys from the summit crater form large debris fans along the coast.
Savo has a very active and large hydrothermal system with many thermal areas, located in the summit crater, on the S to SE flanks, and offshore. They include areas of steaming ground, fumaroles, small geysers, and hot springs, many of high pH and sulphate-rich. Precipitates around hot springs include sinter, travertine and mixed silica-carbonate, often enriched in gold and tellur.
Well-known thermal areas include: Fisher Voghala (hot sulfurous water), Mbiti Voghala (boiling mud pots and geysers), Pipisala (crater fumarole), the Tanginakula river near Mbokiaka (having both cold and hot waters), Vutusuala (hot springs and heated ground), Reoka, Mbulika and Tavoka (hot springs near Sesepi, heating the Kolika River), Talughau and Toakomata (remote hot springs in the bush).
- Smithsonian / GVP volcano information
- Smith, D.J. (2009) "From Slab to Sinter: The Magmatic-Hydrothermal System of Savo Volcano, Solomon Islands", PhD. thesis, Dept. of Geology, Univ Leicester
See also: Sentinel hub | Landsat 8