Black Peak

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  • Country
  • Subregion Name
  • Primary Volcano Type
  • Last Known Eruption
  • 56.552°N
  • 158.785°W

  • 1032 m
    3385 ft

  • 312080
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

There are no activity reports for Black Peak.



 Available Weekly Reports

There are no Weekly Reports available for Black Peak.

Summary of eruption dates and Volcanic Explosivity Indices (VEI).

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
1900 BCE ± 150 years Unknown Confirmed 6 Tephrochronology

The following references are the sources used for data regarding this volcano. References are linked directly to our volcano data file. Discussion of another volcano or eruption (sometimes far from the one that is the subject of the manuscript) may produce a citation that is not at all apparent from the title. Additional discussion of data sources can be found under Volcano Data Criteria.

Burk C A, 1965. Geology of the Alaska Peninsula-island arc and continental margin (Part 1). Geol Soc Amer Mem, 99: 1-250.

IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior..

Miller T P, Smith R L, 1987. Late Quaternary caldera-forming eruptions in the eastern Aleutian arc, Alaska. Geology, 15: 434-438.

Motyka R J, Liss S A, Nye C J, Moorman M A, 1993. Geothermal resources of the Aleutian arc. Alaska Div Geol Geophys Surv, Prof Rpt, no 114, 17 p and 4 map sheets.

Riehle J R, Waitt R B, Meyer C E, Calk L C, 1998. Age of formation of Kaguyak caldera, eastern Aleutian arc, Alaska, estimated by tephrochronology. In: Gray J E, Riehle J R (eds) {Geologic studies in Alaska by the U.S. Geological Survey, 1996}, US Geol Surv Prof Pap, 1595: 161-168.

Smith R L, Shaw H R, Luedke R G, Russell S L, 1978. Comprehensive tables giving physical data and thermal energy estimates for young igneous systems of the United States. U S Geol Surv Open-File Rpt, 78-925: 1-25.

Wood C A, Kienle J (eds), 1990. Volcanoes of North America. Cambridge, England: Cambridge Univ Press, 354 p.

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.