“Tarso Yega”的意思、由来-开放百科全书

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Tarso Yega

释义

References
Sources

{{Infobox mountain
|name=Tarso Yega
|photo=Tarso Yéga ASTER.jpg|photo_caption=ASTER image of Tarso Yega, at the top|map=Chad
|coordinates={{coord|20.66|N|17.42|E|display=inline,intitle}}
|coordinates_ref={{sfn|Permenter|Oppenheimer|2007|p=615}}
}}

Tarso Yega ("well", tedaga{{sfn|Pachur|Altmann|2006|p=115}}) is a stratovolcano in Tibesti, with a summit caldera{{sfn|Permenter|Oppenheimer|2007|p=620}} that is {{convert|19|x|20|km}} wide and {{convert|300|m}} deep. The summit of the volcano reaches a height of {{convert|2972|m}},{{sfn|Permenter|Oppenheimer|2007|p=615}} and its caldera is the largest caldera of the Tibesti.{{sfn|Deniel|Vincent|Beauvilain|Gourgaud|2015|p=12}} Neighbouring volcanoes include Doudriki east, Ehi Dosoatou south and Ehi Fodoboro southwest of the caldera. The Enneri Yega river drains the caldera westward and then south, before joining the Enneri Debarsar; in the past (Holocene) the rivers reached Lake Chad.{{sfn|Pachur|Altmann|2006|p=116}}

The history of the volcano is characterized by the emission of tephras,{{sfn|Permenter|Oppenheimer|2007|p=617}} with the downsagging of the caldera floor generating a depression.{{sfn|Permenter|Oppenheimer|2007|p=623}} Basaltic vents{{sfn|Pachur|Altmann|2006|p=99}} and Lava domes were emplaced within this caldera,{{sfn|Deniel|Vincent|Beauvilain|Gourgaud|2015|p=8}} and an intrusion named Ehi Yodéï developed {{convert|3|km}} farther south.{{sfn|Deniel|Vincent|Beauvilain|Gourgaud|2015|p=13}}

The caldera is heavily eroded, with almost the entire southern side eroded away,{{sfn|Deniel|Vincent|Beauvilain|Gourgaud|2015|p=12}} and the younger Voon ignimbrite has been emplaced inside of it; it belongs to a different volcano, Tarso Voon.{{sfn|Deniel|Vincent|Beauvilain|Gourgaud|2015|p=8}} Humans have used the caldera for irrigated agriculture.{{sfn|Pachur|Altmann|2006|p=106}}

References

Sources

{{cite journal|last1=Deniel|first1=C.|last2=Vincent|first2=P.M.|last3=Beauvilain|first3=A.|last4=Gourgaud|first4=A.|title=The Cenozoic volcanic province of Tibesti (Sahara of Chad): major units, chronology, and structural features|journal=Bulletin of Volcanology|date=8 August 2015|volume=77|issue=9|pages=1–21|doi=10.1007/s00445-015-0955-6|ref=harv|language=English|issn=0258-8900}}
{{Cite book|first1=Hans-Joachim|last1=Pachur|first2=Norbert|last2=Altmann|title=Die Ostsahara im Spätquartär|publisher=SpringerLink|ref=harv|doi=10.1007/978-3-540-47625-2|date=2006|isbn=978-3-540-47625-2|language=de}}
{{cite journal|last1=Permenter|first1=JasonL.|last2=Oppenheimer|first2=Clive|title=Volcanoes of the Tibesti massif (Chad, northern Africa)|journal=Bulletin of Volcanology|date=1 April 2007|volume=69|issue=6|pages=609–626|doi=10.1007/s00445-006-0098-x|ref=harv|language=English|issn=0258-8900}}

2 : Volcanoes of Chad|Calderas of Africa

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