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Igwisi Hills volcano

Tuff cones unknown summit elevation
Tanzania, -4.87°S / 31.92°E
Current status: dormant (1 out of 5)
Igwisi Hills volcano books
Typical eruption style: unspecified
Igwisi Hills volcano eruptions: unknown, no recent eruptions No recent earthquakes
TimeMag. / DepthDistanceLocation

Background:

Three kimberlitic volcanoes of Pleistocene-to-Holocene age are located in the Igwisi Hills, WNW of the city of Tabora in NW Tanzania. The volcanoes were erupted through granitic gneisses and are located on the western side of the Tanzanian Craton far from other Tanzanian volcanoes, which are located near the Gregory Rift. Two well-preserved craters rising 15 to 45 m above the plain occur at Igwisi, with a less pristine crater in between. The NE crater is the largest, 370 m in diameter, and has been breached on the ENE side, the source of a small lava flow about 1 km in length and width. The SW crater is also breached on the ENE side, but no lava flow is visible.
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Smithsonian / GVP volcano information


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