Jumbo Dome volcano

Lava dome 1369 m / 4491 ft
Eastern Alaska, United States, 63.97°N / -148.69°W
Current status: (probably) extinct (0 out of 5)

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Typical eruption style: unspecified
Jumbo Dome volcano eruptions: None during the past 10,000 years
Less than few million years ago (Pleistocene)

Latest nearby earthquakes

TimeMag. / DepthDistance/Location
Fri, 30 Jul 2021 (GMT) (2 earthquakes)
30 Jul 2021 22:23:14 GMT

95 km
19 km (12 mi)
24 Km ENE of McKinley Park, Alaska
30 Jul 2021 01:22:15 GMT
6.5 km (4 mi)
16 Km E of Ferry, Alaska
Thu, 29 Jul 2021 (GMT) (1 earthquake)
29 Jul 2021 00:18:44 GMT
10.1 km (6.3 mi)
16 Km E of Ferry, Alaska
Wed, 28 Jul 2021 (GMT) (1 earthquake)
28 Jul 2021 03:09:09 GMT

7.4 km
20 km (12 mi)
4 Km SSE of Healy, Alaska
Mon, 26 Jul 2021 (GMT) (1 earthquake)
26 Jul 2021 14:41:45 GMT

88 km
20 km (12 mi)
21 Km ENE of McKinley Park, Alaska


Jumbo Dome is a large cylindrical plug of hornblende andesite 1.6 km long, 1.3 km wide, and 500 m high which intrudes the Devonian Keevy Peak Formation basement and overlying Tertiary Suntrana Formation (AVO, 2005-). Ar/Ar dating by Athey et al. (2006) yielded an age for Jumbo Dome of 1.026 +/- 0.057 Ma.
Source: Smithsonian / GVP volcano information

See also: Sentinel hub | Landsat 8
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