Roundtop Vulkan
Stratovolcano 1871 m / 6,138 ft
United States, Aleutian Islands, 54.8°N / -163.59°W
Aktueller Status: normal / ruhend (1 von 5) | Berichte
Roundtop Vulkan-B cher
United States, Aleutian Islands, 54.8°N / -163.59°W
Aktueller Status: normal / ruhend (1 von 5) | Berichte
Roundtop Vulkan-B cher
Typische Aktivität: unspecified
Ausbrüche des Roundtop: 7600 BC ± 500 years
Ausbrüche des Roundtop: 7600 BC ± 500 years
| Uhrzeit | Mag. / Tiefe | Distance | Ort |
Beschreibung:
The flat-topped, glacier-covered Roundtop volcano is the easternmost and lowest of an E-W-trending line of volcanoes on eastern Unimak Island. Roundtop lies 13 km SW of the village of False Pass. The snow and ice-covered edifice fills much of a 3-km-wide caldera that formed during the early Holocene. The caldera-forming eruption produced pyroclastic flows and a rhyolitic tephra layer that is widespread throughout the southwestern end of the Alaska Peninsula. A group of lava domes was constructed south of Roundtop volcano. No historical eruptions are known from the 1871-m-high stratovolcano. In the 1930s warm springs were found on its slopes.---
Smithsonian / GVP volcano information
Roundtop Fotos:
 The chain of volcanoes on Unimak, from left to right: Roundtop Mountain, Isanotski, Pogromni and Shishaldin. (Photo: marcofulle) |
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