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Pic Toussidé

Tousside, Tarso

Stratovolcano · Chad · 3299m

A dramatic Space Shuttle image shows dark lava flows radiating from Toussidé volcano and spreading across the desert floor. Light-colored altered areas can be seen at the summit, the second highest peak of the Tibesti Range in Chad. It was constructed at the W end of the large Pleistocene caldera of Yirrigue, whose E scarp is seen right of Toussidé. The smaller 1-km-deep, 8-km-wide Trou au Natron caldera (lower right) cuts the SE rim of the caldera.
A dramatic Space Shuttle image shows dark lava flows radiating from Toussidé volcano and spreading across the desert floor. Light-colored altered areas can be seen at the summit, the second highest peak of the Tibesti Range in Chad. It was constructed at the W end of the large Pleistocene caldera of Yirrigue, whose E scarp is seen right of Toussidé. The smaller 1-km-deep, 8-km-wide Trou au Natron caldera (lower right) cuts the SE rim of the caldera. · Photo: NASA Space Shuttle image STS111-367-29, 2002 (http://eol.jsc.nasa.gov/). · Wikimedia Commons
Type
Stratovolcano
Country
Chad
Region
Northern Africa / East Central Sahara Volcanic Province
Elevation
3299m
Coordinates
21.041, 16.473
Last eruption
Unknown
Tectonic setting
Intraplate / Continental crust (> 25 km)
Landform
Composite
Major rock type
Trachyte / Trachydacite
Geological summary

Tarso Toussidé, a broad volcanic massif at the western end of the Tibesti Range, is capped by the Toussidé stratovolcano, constructed at the western end of the 14-km-wide ignimbritic Pleistocene Yirrigue caldera. The 6,000 km2 massif was constructed over a basement of Precambrian schists on the east and Paleozoic sandstones on the west. The summit contains numerous fumaroles and very youthful lava flows (Vincent, 1992 pers. comm.). Fresh-looking trachytic and trachyandesitic lava flows cover an area of 200 km2 and extend as far as 25 km from the summit on the western side. The steep-sided, 1-km-deep, 8-km-wide Trou au Natron caldera cuts the SE rim of Yirrigue caldera and is one of the youngest features of the massif. Ehi Timi and Ehi Sosso volcanoes, and the smaller 1.5-km-wide explosion crater of Doon Kidimi, are located on the NE-to-ESE flanks of the massif.

Eruption history

Detailed timeline

No eruption records available.

External links

⚠ For reference only. Not for emergency response.