O'a Caldera Volcano
Updated: 29. Apr. 2024 10:40 GMT -
Caldera 2075 m / 6,808 ft
Ethiopia, 7.47°N / 38.58°E
Aktueller Status: normal / ruhend (1 von 5)
Ethiopia, 7.47°N / 38.58°E
Aktueller Status: normal / ruhend (1 von 5)
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Ausbrüche des O'a Caldera: unknown, no recent eruptions
Letzte Erdbeben in der Nähe
| Uhrzeit | Mag. / Tiefe | Entfernung / Ort | |||
Beschreibung
O'a caldera along the central Ethiopian Rift is the country's largest rift-valley caldera. The caldera forms the eastern portion of the 15 x 25 km dumbbell-shaped Lake O'a (also known as Lake Shalla). Formation of the caldera about 240,000 years ago was accompanied by the eruption of two ignimbrite deposits, the first of which was strongly welded. The only post-caldera activity consists of two pyroclastic cones north of the caldera, one silicic and the other basaltic, and a group of tuff rings, spatter cones, and lava flows of Holocene (perhaps as young as prehistorical) age near the SW shore of the lake. These were erupted along the Corbetti-Shalla segment of the Wonji Fault Belt, which extends north from Corbetti caldera. Fumarolic activity continues on all sides of the lake.---
Smithsonian / GVP volcano information
O'a Caldera Volcano Photos
Die Caldera Blanca ist einer der schönsten Vulkankrater. (Photo: Tobias Schorr)
Blick über die Caldera Blanca (Photo: Tobias Schorr)
Schöne Blume an der Caldera Blanca (Photo: Tobias Schorr)
Die senkrechte Felswand der Ostseite von Palea Kameni. Vermutlich um 1457–58 n. Chr. brach ein Teil der Insel ab und legte das konzentrisch gebrochene Innere des Lavadoms...
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