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Gada Ale

Stratovulcano · Ethiopia · 287 m

Gada Ale (upper right) is the most prominent volcano at the northern end of the Erta Ale Range. The 287-m-high volcano is seen here from the S, with two small lakes on its lower NW flank. Lake Aasale (Lake Karum) at about 116 m below sea level, is in the background. Prominent fissures (lower right) are adjacent to an uplifted salt dome (lower left). Salt diapir uplift has affected both this 2-km-wide area W of the volcano (where lava flows are uplifted as much as 100 m) and Gada Ale itself.
Gada Ale (upper right) is the most prominent volcano at the northern end of the Erta Ale Range. The 287-m-high volcano is seen here from the S, with two small lakes on its lower NW flank. Lake Aasale (Lake Karum) at about 116 m below sea level, is in the background. Prominent fissures (lower right) are adjacent to an uplifted salt dome (lower left). Salt diapir uplift has affected both this 2-km-wide area W of the volcano (where lava flows are uplifted as much as 100 m) and Gada Ale itself. · Foto: Copyrighted photo by Marco Fulle, 2002 (Stromboli On-Line, http://stromboli.net).
Tipo
Stratovulcano
Paese
Ethiopia
Regione
Eastern Africa Volcanic Regions / Afar Rift Volcanic Province
Altitudine
287 m
Coordinate
13.975, 40.408
Ultima eruzione
Sconosciuto
Contesto tettonico
Rift zone / Intermediate crust (15-25 km)
Forma vulcanica
Composite
Roccia principale
Basalt / Picro-Basalt
Sintesi geologica

Gada Ale (also known as Kebrit Ale), the most prominent volcano at the northern end of the Erta Ale Range, is formed of interstratified lava flows and hyaloclastites. Fumarolic activity is continuing, and the summit crater contains a small lake with hot mud. Like other Erta Ale Range volcanoes, Gada Ale is considered to be of Holocene age (Barberi and Varet, 1970). A fissure on the SE flank has produced spatter cones and a cinder cone; the latter fed lava flows that reach to Lake Bakili. The symmetrical Catherine tuff ring is located along this same SE trend west of Lake Bakili, and other tuff rings occur on the east side of the lake. A 2-km-wide salt dome to the west has uplifted lava flows as much as 100 m, and the structure of Gada Ale itself appears to be related to salt diapir uplift.

Sintesi da Wikipedia

Il Gada Ale, detto anche Kebrit Ale, è lo stratovulcano più settentrionale della catena dell'Erta Ale in Dancalia. Con i suoi 287 metri di altezza è anche il più basso dei vulcani principali. Non si conosce la data dell'ultima eruzione. Attualmente è spento.

Wikipedia · CC BY-SA · Leggi l'articolo completo →

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