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News
mar, 22 gen 2013, 08:17
Seismicity continues to be slightly elevated. ... leggere tutti
Mon, 21 Jan 2013, 06:17
Seismic recording at Mt Spurr volcano (CKT station, AVO)
Small local earthquakes continue to appear on seismic recordings. ... leggere tutti
Location map of Spurr Volcano, Cook Inlet region, Alaska (courtesy of Janet Schaefer, Alaska Volcano Observatory / USGS)
Location map of Spurr Volcano, Cook Inlet region, Alaska (courtesy of Janet Schaefer, Alaska Volcano Observatory / USGS)

Spurr vulcano

stratovulcano 3374 m / 11,070 ft
Cook Inlet, SW Alaska, 61.3°N / -152.25°W
Stato attuale: normal or dormant (1 di 5)
Last update: 22 Jan 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.

Show interactive Map
Stile eruttivo tipico: explosive
Eruzioni del vulcano 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

Data / oraMag. / ProfonditàDistanzaUbicazione
Sun, 28 Feb 2021 (GMT) (4 Terremoti)
28 feb 2021 01:02 (GMT -9) (28 Feb 2021 10:02:32 GMT)
2.0

44 km - Più
81 km26 Km WNW of Susitna, Alaska, USA
27 feb 2021 22:36 (GMT -9) (28 Feb 2021 07:36:37 GMT)
1.2

61 km - Più
44 km39 Km WSW of Tyonek, Alaska, USA
27 feb 2021 20:07 (GMT -9) (28 Feb 2021 05:07:56 GMT)
1.2

72 km - Più
36 km32 Km W of Tyonek, Alaska, USA
27 feb 2021 15:37 (GMT -9) (28 Feb 2021 00:37:41 GMT)
1.9

54 km - Più
78 km28 Km WNW of Susitna, Alaska, USA
Sat, 27 Feb 2021 (GMT) (1 terremoto)
27 feb 2021 14:44 (GMT -9) (27 Feb 2021 23:44:27 GMT)
1.5

9 km - Più
105 km11 Km SE of Point Possession, Alaska, USA

Sfondo

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.
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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. ...più

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

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