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Mammoth Mountain vulcano

Aggiornato: 8 dic. 2022 10:25 GMT -
Duomi lavici 3369 m / 11,053 ft
California, USA, 37.63°N / -119.03°W
Stato attuale: normal or dormant (1 di 5)
Last update: 12 mar 2022 (occasional seismic swarms)

Mammoth Mountain is a lava-dome complex on the SW rim of Long Valley caldera, California. Despite its close geographic relation, it is believed that it has its own magma chamber different from the ones underlying Long Valley caldera and the Inyo craters.

Mostra la mappa interattiva
Stile eruttivo tipico: effusiva
Eruzioni del vulcano Mammoth Mountain: 1260 ± 40 years

Latest nearby earthquakes

Data / oraMag. / Prof.Distanza/Ubicazione
martedì, 6 dicembre 2022 GMT (1 sismo)
6 dic 2022 09:36 (GMT -8) (6 dic 2022 17:36 GMT)

5 km
33 km (21 mi)
20km SE of Yosemite Valley, CA
domenica, 4 dicembre 2022 GMT (1 sismo)
4 dic 2022 10:52 (GMT -8) (4 dic 2022 18:52 GMT)

11 km
29 km (18 mi)
4km SW of Toms Place, CA
mercoledì, 30 novembre 2022 GMT (1 sismo)
30 nov 2022 12:14 (GMT -8) (30 nov 2022 20:14 GMT)

1.3 km
10.8 km (6.7 mi)
6km E of Mammoth Lakes, CA
domenica, 27 novembre 2022 GMT (1 sismo)
27 nov 2022 15:38 (GMT -8) (27 nov 2022 23:38 GMT)

16 km
40 km (25 mi)
6km WNW of Round Valley, CA


The last eruption of the lava dome complex itself took place about 57,000 years ago. There are more than 35 vents fed by the same magma chamber, including Red Cones, two basaltic cinder cones SE of Mammoth Mountain and SE of Devils Postpile National Monument. The cones, whose name derives from their colorful upper scoria deposits, were radiocarbon dated at about 8900 years ago.
Phreatic eruptions on the north side of Mammoth Mountain took place about 700 years ago. The recent unrest, including seismicity, gas emission, and tree kill, at the Long Valley caldera is thought to be related to a dike intrusion beneath Mammoth Mountain in 1989.
(Source: GVP)

See also: Sentinel hub | Landsat 8 | NASA FIRMS
Tue, 11 Feb 2014, 20:10

Long Valley caldera (California, USA): small earthquake swarm east of Mammoth Mountain

Location of recent earthquakes near Mammoth Mountain (CA)
An small earthquake swarm at shallow depths (around 5 km) occurred east of Mammoth Mountain during the past week. The largest quake was a magnitude 3.0 event on 5 Feb. ... Read all
Sun, 3 Feb 2013, 15:13

Mammoth Mountain volcano (California, USA) activity update

Map of recent quakes near Mammoth Mountain
Small earthquakes continue beneath and (mostly) immediately to the SE of Mammoth Mountain in the Sierra Nevada range. ... Read all
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