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Data from the Global Volcanism Program of the Smithsonian Institution
Details for: Lake Turkana North Island
North Island in the north-central part of Lake Turkana is the northernmost and smallest of three volcanic islands in the lake. The two darker lava flows originated from a central tuff ring and formed lava deltas. The broad northern flow (left) originated from a vent on the flank and produced a 900-m-wide, lobate delta. The western flow (lower right) moved from the central vent through a breach in the western crater wall. Fumarolic activity occurs along the light-colored ridge at the top and along the SW coast. Photo by Martin Smith, 1993 (copyright British Geological Survey, NERC).
Volcano Number:
222001
Volcano Name:
Lake Turkana North Island
Country:
Kenya
Volcano Type:
Tuff cone(s)
Elevation:
490m
Tectonic Setting:
Rift zone / Continental crust (> 25 km)
Pop. within 5km:
21
Pop. within 10km:
21
Pop. within 30km:
7326
Pop. within 100km:
180900
Latitude:
4.0631
Longitude:
36.0458
Details
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The 2-km-wide North Island in Lake Turkana is the northernmost and smallest of three volcanic islands in the lake. It is primarily composed of trachyandesitic-to-trachytic phreatomagmatic deposits from overlapping eroded tuff cones or tuff rings. The center of the island consists of a young tuff ring about 1 km in diameter nested inside an older tuff ring. Two fresh unvegetated lava flows that reach the lake shore from the central tuff ring form lava deltas on the N and W sides of the island; the northern delta is about 900 m wide. The two blocky lava flows are younger than a terrace that formed less than 10,000 years ago during the last major high-water level (Key and Watkins, 1988). Geothermal activity occurs along a curvilinear ridge on the S portion of the island and on wave-cut platforms and beaches on the SW shoreline.
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Eruption Data from the Global Volcanism Program of the Smithsonian Institution
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Emissions Data from the Global Volcanism Program of the Smithsonian Institution
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Data from the Earthchem Library
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Data from the Earthchem Portal
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Data from the SESAR Database
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Data from the MaGa Database
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Data from UNAVCO
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Data from USIEI
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Data from IRIS FDSNWS
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