Emi Koussi
Emi Koussi | |
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Emi Koussi seen from International Space Station
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Highest point | |
Elevation | Lua error in Module:Convert at line 1851: attempt to index local 'en_value' (a nil value). [1] |
Prominence | Lua error in Module:Convert at line 1851: attempt to index local 'en_value' (a nil value). [1] Ranked 103rd |
Listing | Country high point Ultra |
Coordinates | Lua error in package.lua at line 80: module 'strict' not found. |
Geography | |
Emi Koussi is located in Chad
Emi Koussi
Location in Chad
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Location | Chad |
Parent range | Tibesti Mountains |
Geology | |
Age of rock | Holocene |
Mountain type | Pyroclastic shield |
Last eruption | unknown |
Climbing | |
First ascent | 1938[citation needed] |
Easiest route | Hike |
Emi Koussi is a high pyroclastic shield volcano that lies at the southeast 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 3,445 metres (11,302 ft) in elevation, rising 2.3 km (1.4 mi) above the surrounding sandstone plains. The volcano is 60 by 80 km wide.[2]
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.[2] 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 studied as an analogue of the 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.[3]
It was climbed in September 1938 by Wilfred Thesiger and Idris Daud as recorded in the former's autobiography A Life of My Choice.[4]
Contents
See also
References
Sources
- Original entry was from the NASA Earth Observatory; [1]
- NASA Earth Explorer page
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- "Emi Koussi". Peakware.com.
- "Emi Koussi, Chad" on Peakbagger
External links
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- Tibesti Mountains
- Pyroclastic shields
- Volcanic calderas of Africa
- Hotspot volcanoes
- Volcanoes of Chad
- Maars of Chad
- Mountains of Chad
- Holocene volcanoes
- Inactive volcanoes
- Highest points of countries
- Volcanology stubs