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The Global Volcanism Program has no activity reports for South Island.
The Global Volcanism Program has no Weekly Reports available for South Island.
The Global Volcanism Program has no Bulletin Reports available for South Island.
Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).
|Start Date||Stop Date||Eruption Certainty||VEI||Evidence||Activity Area or Unit|
This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.
|Hohnel Island | von Hohnel Island|
|South Island (left center) is the southernmost and largest of the three volcanic islands in Lake Turkana. North is to the left in this Space Shuttle view. Fresh-looking lava flows, erupted from a fissure extending the 11-km length of the island, form much of the eastern (top) shoreline. The basaltic lava flows are morphologically similar to youthful Holocene flows of The Barrier volcano, whose lower flanks can be seen at the far right. An eruption from a scoria cone on South Island was witnessed during Count von Teliki's 1888 expedition.
NASA Space Shuttle image ISS006-E-5095, 2002 (http://eol.jsc.nasa.gov/).
|South Island (right) is the southernmost and largest of the three volcanic islands in Lake Turkana. The island (sometimes referred to as Hohnel Island) contains numerous tuff cones and rises 320 m above the lake surface. Fresh-looking lava flows, erupted from a N-S fissure extending the 11-km length of the island, form much of the eastern shoreline. An eruption from a scoria cone on South Island was witnessed during Count von Teliki's 1888 expedition.
Photo by Doron, 1999 (http://commons.wikimedia.org/wiki/Image:LakeTurkanaSouthIsland.jpg).
The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title.
Bloomer S H, Curtis P C, Karson J A, 1989. Geochemical variation of Quaternary basaltic volcanoes in the Turkana Rift, northern Kenya. J African Earth Sci, 8: 511-532.
Dunkley P N, Smith M, Allen D A, Darling W G, 1993. The geothermal activity and geology of the northern sector of the Kenya Rift Valley. Brit Geol Surv Res Rpt, SC/93/1: 1-185.
Karson J A, Curtis P C, 1994. Axial Quaternary volcanic centers in the Turkana rift, N. Kenya. J African Earth Sci, 18: 15-35.
Ochieng J O, Wilkinson A F, Kagasi J, Kimomo S, 1988. Geology of the Loiyangalani area. Rpt Mines Geol Dept Kenya, 107: 1-53.
Richard J J, Neumann van Padang M, 1957. Africa and the Red Sea. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI 4: 1-118.
|Large Eruptions of South Island||Information about large Quaternary eruptions (VEI >= 4) is cataloged in the Large Magnitude Explosive Volcanic Eruptions (LaMEVE) database of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).|
|WOVOdat||WOVOdat is a database of volcanic unrest; instrumentally and visually recorded changes in seismicity, ground deformation, gas emission, and other parameters from their normal baselines. It is sponsored by the World Organization of Volcano Observatories (WOVO) and presently hosted at the Earth Observatory of Singapore.|
|EarthChem||EarthChem develops and maintains databases, software, and services that support the preservation, discovery, access and analysis of geochemical data, and facilitate their integration with the broad array of other available earth science parameters. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility Integrated Earth Data Applications (IEDA). IEDA is a collaborative effort of EarthChem and the Marine Geoscience Data System (MGDS).|
|Smithsonian Collections||Search the Smithsonian's NMNH Department of Mineral Sciences collections database. Go to the "Search Rocks and Ores" tab and use the Volcano Name drop-down to find samples.|