Spurr volcan

stratovolcan 3374 m / 11,070 ft
Cook Inlet, SW Alaska, 61.3°N / -152.25°W
Condition actuelle: normal / en sommeil (1 sur 5)
Last update: 22 janv. 2013

Mt Spurr volcano is the highest volcano in the Aleutian Volcanic Arc. the glacier-covered stratovolcano is located 130 km west of Anchorage and NE of Chakachamna Lake.
Mt Spurr had a violent sub-plinian eruption in 1992 and a large eruption in 1953, both ranking at VEI 4 and produced by Crater Peak, a small flank vent on the south side. No other historic eruptions have been documented.

Montrer carte interactive
Style éruptif tipique: explosive
Eruptions du volcan Spurr: 1992 (Crater Peak), 1965 (?, Spurr), 1953 (Crater Peak)
tephrochronology and radiocarbon dated: 1650 ± 50 years, 3250 BC ?, 4050 BC ?, 5110 BC ± 100 years, 6050 BC

Latest nearby earthquakes

HeureMag. / ProfondeurDistance/Lieu
Mon, 2 Aug 2021 (GMT) (4 séismes)
2 Aug 2021 19:23:43 GMT
1.6

120 km
35 km (22 mi)
54 Km SSW of Skwentna, Alaska
2 Aug 2021 09:15:47 GMT
2.5

2.9 km
24 km (15 mi)
66 Km W of Tyonek, Alaska
2 Aug 2021 05:47:22 GMT
1.3

83 km
21 km (13 mi)
47 Km WNW of Beluga, Alaska
2 Aug 2021 00:55:34 GMT
2.2
21 km (13 mi)
Southern Alaska
Sun, 1 Aug 2021 (GMT) (1 séisme)
1 Aug 2021 02:00:34 GMT
1.6

72 km
36 km (22 mi)
31 Km WNW of Beluga, Alaska

Introduction

The 3374-m-high summit of Mount Spurr, the highest volcano of the Aleutain arc, is a large lava dome constructed at the center of a roughly 5-km-wide horseshoe-shaped caldera that is open to the south.
The caldera was formed by a late-Pleistocene or early Holocene debris avalanche and associated pyroclastic flows that destroyed an ancestral Spurr volcano. The debris avalanche traveled more than 25 km to the SE, and the resulting deposit contains blocks as large as 100 m in diameter. Several ice-carved post-caldera cones or lava domes lie in the center of the caldera. The youngest vent, 2309-m-high Crater Peak, formed at the breached southern end of the caldera and has been the source of about 40 identified Holocene tephra layers. Spurr's two historical eruptions, from Crater Peak in 1953 and 1992, deposited ash on the city of Anchorage.
---
from: Smithsonian / GVP Mt Spurr volcano information

1992 eruption
A large, subplinian eruption occurred in 1992 at Mt Spurr volcano. There were 3 main explosions, on 27 June, 18 August and 16-17 September. The eruption produced ash columns up to 13.5 km high and ashfall in several hundred km distance. ...plus

1953 eruption
A VEI 4 explosive eruption occurred at Crater Peak from 9-16 July 1953. It produced major ash fall (up to 6 mm in Anchorage) and lahars on the flanks and the base of the volcano.

See also: Sentinel hub | Landsat 8
Montrer plus
Try our free app!
Volcanoes & Earthquakes - new app for Android
Android | iOS version

Plus sur VolcanoDiscovery

Why is there advertising on this site?
Support us - Help us upgrade our services!
We truly love working to bring you the latest volcano and earthquake data from around the world. Maintaining our website and our free apps does require, however, considerable time and resources.
We need financing to increase hard- and software capacity as well as support our editor team. We're aiming to achieve uninterrupted service wherever an earthquake or volcano eruption unfolds, and your donations can make it happen! Every donation will be highly appreciated. If you find the information useful and would like to support our team in integrating further features, write great content, and in upgrading our soft- and hardware, please make a donation (PayPal or Online credit card payment).

Planned features:
  • Weather reports
  • Tsunami alerts
  • Design upgrades
  • Faster responsiveness
Thanks to your past donations, these features have been added recently:
  • Earthquake archive from 1900 onwards
  • Additional seismic data sources
  • Improved content in English
Download and Upgrade the Volcanoes & Earthquakes app to get one of the fastest seismic and volcano alerts online:
Android | IOS
Thank you!
Copyright: VolcanoDiscovery ou autres sources indiquées.
Utilisation des documents: Les textes, les images et les vidéos de ce site internet sont protégées par copyright. Toute reproduction et tout usage sans accord préalable ne sont pas autorisés. Si vous désirez acquérir pour certains documents (photos, vidéos, textes ou autres) le droit de reproduction, d'édition et, plus généralement, de toute utilisation destinée à un usage public, qu'elle soit commerciale ou pas, vous êtes priés de nous contacter.