Roundtop Volcano
Updated: 25 Απριλίου 2024 13:08 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)
[smaller] [larger]
Roundtop volcano eruptions: 7600 BC ± 500 years
Latest nearby earthquakes
Ώρα | Mag. / Βάθος | Απόσταση / Τοποθεσία | |||
19 Απρ 01:55 (Anchorage) | 0.8 8 km | 36 km WSW of False Pass, Alaska | Περ. | ||
18 Απρ 23:22 (Anchorage) | 1.9 11 km | 29 km νότια | 35 km S of False Pass, Alaska | Περ. | |
Τετάρτη, 17 Απριλίου 2024 GMT (1 σεισμός) | |||||
16 Απρ 23:24 (Anchorage) | 1.8 12 km | 29 km νότια | 35 km S of False Pass, Alaska | Περ. | |
Κυριακή, 14 Απριλίου 2024 GMT (1 σεισμός) | |||||
14 Απρ 09:42 (Anchorage) | 0.4 12 km | 33 km WSW of False Pass, Alaska | Περ. | ||
Σάββατο, 13 Απριλίου 2024 GMT (2 σεισμοί) | |||||
13 Απρ 07:42 (Anchorage) | 1.9 13 km | 28 km νότια | 35 km SSW of False Pass, Alaska | Περ. | |
12 Απρ 20:23 (Anchorage) | 1.3 19 km | 21 km δυτικά | 32 km WSW of False Pass, Alaska | Περ. |
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
Η αλυσίδα των ηφαιστείων στο Unimak, από αριστερά προς τα δεξιά: Roundtop Mountain, Isanotski, Pogromni και Shishaldin. (Photo: marcofulle)...