Emi Koussi

Emi Koussi
Emi Koussi

Emi Koussi seen from International Space Station
Elevation 3,445 m (11,302 ft) [1]
Prominence 2,934 m (9,626 ft) [1]
Listing Country high point
Ultra
Location
Emi Koussi is located in Chad
Emi Koussi
 Chad
Range Tibesti Mountains
Coordinates 19°47′36″N 18°33′06″E / 19.79333°N 18.55167°E / 19.79333; 18.55167Coordinates: 19°47′36″N 18°33′06″E / 19.79333°N 18.55167°E / 19.79333; 18.55167
Geology
Type Pyroclastic shield
Age of rock Holocene
Last eruption unknown
Climbing
First ascent 1938
Easiest route Hike

Emi Koussi is a high pyroclastic shield volcano that lies at the south end of the Tibesti Mountains in the central Sahara of northern Chad. It is the highest mountain in Chad, and the highest in the Sahara. The volcano is one of several in the Tibesti massif, and reaches 3445 m in altitude, rising 2.3 km above the surrounding sandstone plains. The volcano is 60 by 80 km wide.

Two nested calderas cap the volcano, the outer one being about 12 by 15 km in size. Within it on the southeast side is a smaller caldera, about 2–3 km wide and 350 m deep. Numerous lava domes, cinder cones, maars, and lava flows are found both within the calderas and along the outer flanks of the shield. The inner caldera contains large natron deposits which see some harvesting for domestic animal salt lick use by the local people.

Emi Koussi has been used as a close analog to the famous Martian volcano Elysium Mons. One of the most important morphological differences between volcanoes on Mars and Earth is the widespread furrowing of the surface due to flowing water on terrestrial volcanoes. The furrows are shallow valleys. Larger channels have a different origin. Major channels can be seen on volcanoes on both planets and indicate low points in caldera rims where lava spilled out of pre-collapse craters.

Emi Koussi as photographed by space shuttle mission STS-108.
This astronaut photograph highlights the entire volcanic structure.


See also

Notes

References


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Look at other dictionaries:

  • Emi Koussi — Image satellite de l Emi Koussi avec sa caldeira sommitale. Géographie Altitude 3 415 ou 3 445 m …   Wikipédia en Français

  • Emi Koussi — Tibesti, Emi Koussi Gipfel, beobachtet von der Internationalen Raumstation Höhe …   Deutsch Wikipedia

  • Emi Koussi — Saltar a navegación, búsqueda Emi Koussi Elevación 3445 m Ubicación Chad Co …   Wikipedia Español

  • Emi Koussi — point culminant du Tibesti (Tchad); 3 415 m. Plus grand volcan éteint du Sahara …   Encyclopédie Universelle

  • Emi Kussi — Emi Kụssi,   Emi Koussi [emiku si], höchster Berg des Tibesti, Zentralsahara, 3 415 m über dem Meeresspiegel, kegelförmig, aus Basalt und Trachyt aufgebaut …   Universal-Lexikon

  • Koussi, Mount — ▪ mountain, Chad also called  Emi Koussi,         highest summit (11,204 feet [3,415 m]) in the Sahara, situated 109 miles (176 km) north northwest of Faya in the Tibesti massif, northwestern Chad. It is an extinct volcano with a crater… …   Universalium

  • Tibestigebirge — Emi Koussi Gipfel, beobachtet von der Internationalen Raumstation Das Tibesti ist ein aus Vulkanen bestehender Gebirgszug im Tschad und zugleich das höchste Gebirge der Sahara. Es erhebt sich am Nordrand des Tschadbeckens und steigt aus der… …   Deutsch Wikipedia

  • Эми-Куси — (Emi Koussi)Emi Koussi, гора, высочайшая вершина вулканического происхождения в массиве Тибести на С. Республики Чад; высота 3415 м …   Страны мира. Словарь

  • Tibesti — p1p5 Tibesti Emi Koussi Gipfel, beobachtet von der Internationalen Raumstation Höchster Gipfel …   Deutsch Wikipedia

  • Эми Кусси — Изображение вулкана Эми Кусси, полученное из космоса Эми Кусси (фр. Emi Koussi)  вулкан в Республике Чад. Общие сведения Высота вулкана Эми Кусси  3415 …   Википедия

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