Geologic map of Okmok Volcano

Description

Geologic map of Okmok Volcano, Report of Investigation 2023-1, provides 40Ar/39Ar and radiocarbon geochronology data from Okmok Volcano and its eruptive products. Okmok Volcano is one of 54 historically active volcanoes in the Alaska-Aleutian volcanic arc that stretches across southern mainland Alaska and the Aleutian Islands. Okmok Volcano dominates the northeastern portion of Umnak Island, which is 100 km southwest of Unalaska/Dutch Harbor and 1,400 km southwest of Anchorage. Okmok Volcano is one of the most frequently active volcanoes in the Aleutian volcanic arc. In 1998, the Alaska Volcano Observatory (AVO) began a multi-year effort to expand geophysical monitoring in the central Aleutians Islands, including at Okmok Volcano. These data support the development of a modern geologic map of Okmok Volcano and related investigation of its eruptive history and hazards. The analytical data tables associated with this report are provided in digital format as comma-separated value (CSV) files. They are available from the DGGS website: http://doi.org/10.14509/31015.

Resources

Name Format Description Link
0 table https://doi.org/10.14509/31015
0 https://doi.org/10.14509/31015
0 https://doi.org/10.14509/7042
0 https://doi.org/10.14509/29405
0 https://doi.org/10.14509/30853
0 https://doi.org/10.14509/29843
0 https://doi.org/10.14509/7041
0 https://doi.org/10.14509/23223
0 https://doi.org/10.14509/30058

Tags

  • mount recheshnoi
  • jag peak
  • ashfall
  • okmok volcano
  • pleistocene
  • aleutian islands
  • caldera
  • 40ar/39ar
  • outcrop samples
  • radiocarbon dating
  • geochronology
  • okmok caldera
  • lava flow
  • holocene
  • geologic
  • volcanoes
  • reindeer creek
  • volcanic
  • crater creek basalt
  • geology
  • dggs
  • crater creek
  • umnak island
  • volcanic ash
  • colorado creek
  • geologic map
  • volcaniclastics
  • geochemistry
  • rock glaciers
  • moraines
  • volcanic arc
  • geochemical data
  • okmok
  • gis
  • tulik
  • helicopter survey
  • subduction
  • pumice
  • hazards
  • volcaniclastic deposits
  • okmok hot springs
  • bering sea
  • rhyolite
  • scoria
  • pacific ocean
  • mount vsevidof
  • volcanic eruption
  • volcanic rocks
  • dutch harbor
  • glacial
  • mount
  • geologic hazards
  • fumarole chemistry
  • radiocarbon ages

Topics

  • Local Government

Categories