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Ngozi volcano

Caldera 2622 m / 8,602 ft
Tanzania, -8.97°S / 33.57°E
Current status: dormant (1 out of 5) | Reports
Ngozi volcano books
Typical eruption style: unspecified
Ngozi volcano eruptions: 1450 ± 40 years No recent earthquakes
TimeMag. / DepthDistanceLocation

Background:

Ngozi caldera is the most prominent volcanic feature of the Poroto Ridge, a transverse structure at the northern end of the Karonga basin. The trachytic-to-phonolitic volcano contains a 3-km-wide caldera with a 1.5 x 2.5 km lake inn the southern part of the caldera that is bounded by steep-walled cliffs 150-300 m high. Numerous pyroclastic cones are situated along the ridge. Eruption of the Kitulo Pumice, radiocarbon dated at about 10,200 cal. years Before Present, is though to be related to formation of the caldera. The youngest activity appears to have originated from the caldera and from youthful-looking pyroclastic cones to the north; the youngest known eruption produced a pyroclastic flow that swept at least 10 km to the south about 500 years ago.
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Smithsonian / GVP volcano information


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