Roundtop Volcano
Updated: 25 abr. 2024 16:18 GMT -
Stratovolcano 1871 m / 6,138 ft
United States, Aleutian Islands, 54.8°N / -163.59°W
Current status: normal or dormant (1 out of 5)
United States, Aleutian Islands, 54.8°N / -163.59°W
Current status: normal or dormant (1 out of 5)
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Erupciones del volcán Roundtop: 7600 BC ± 500 years
Latest nearby earthquakes
Fecha / Hora | Revista / Prof. | Distancia / Ubicación | |||
19 abr 01:55 (Anchorage) | 0.8 8 km | 36 km WSW of False Pass, Alaska | Más | ||
18 abr 23:22 (Anchorage) | 1.9 11 km | 29 km al sur | 35 km S of False Pass, Alaska | Más | |
miércoles, 17 abril 2024 GMT (1 sismo) | |||||
16 abr 23:24 (Anchorage) | 1.8 12 km | 29 km al sur | 35 km S of False Pass, Alaska | Más | |
domingo, 14 abril 2024 GMT (1 sismo) | |||||
14 abr 09:42 (Anchorage) | 0.4 12 km | 33 km WSW of False Pass, Alaska | Más | ||
sábado, 13 abril 2024 GMT (2 sismos) | |||||
13 abr 07:42 (Anchorage) | 1.9 13 km | 28 km al sur | 35 km SSW of False Pass, Alaska | Más | |
12 abr 20:23 (Anchorage) | 1.3 19 km | 21 km al oeste | 32 km WSW of False Pass, Alaska | Más |
Background
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 Volcano Photos
La cadena de volcanes del Unimak, de izquierda a derecha: Roundtop Mountain, Isanotski, Pogromni y Shishaldin. (Photo: marcofulle)