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Black Peak Volcano

Updated: Mar 28, 2024 15:15 GMT -
Stratovolcano 1032 m / 3,386 ft
United States, Alaska Peninsula, 56.55°N / -158.79°W
Current status: normal or dormant (1 out of 5)

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Typical eruption style: unspecified
Black Peak volcano eruptions: 1900 BC ± 150 years

Latest nearby earthquakes

No recent earthquakes
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Background

The highly eroded stratovolcano and lava dome complex of Black Peak was constructed within an ice-free mid-Holocene caldera with two small caldera lakes on the northern and eastern sides. The pre-caldera volcano consists of andesitic-dacitic lava domes, lava flows, and volcaniclastic rocks that were constructed over a basement of Pliocene volcanogenic sedimentary rocks. Ash-flow tuffs and block-and-ash-flow deposits from the >10 cu km caldera-forming eruption, which occurred less than about 4000 years ago, fill the Ash Creek and Bluff Creek valleys to the west and north to depths of as much as 100 m. Most of the 3.5-km-wide caldera floor is occupied by a complex of nested dacitic lava domes and associated lava flows centered in the southern part of the caldera.
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Smithsonian / GVP volcano information

Black Peak Volcano Photos

Latest satellite images

blackpeak satellite image sat1blackpeak satellite image sat2

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