Geologic map of Okmok Volcano
Description
Geologic map of Okmok Volcano, Report of Investigation 2023-1, shows the distribution of historic, Holocene, and late Pleistocene volcanic rocks and deposits related to Okmok Volcano. 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 complete report, geodatabase, and ESRI fonts and style files are available from the DGGS website: http://doi.org/10.14509/31015.
Resources
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Description |
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geologic map |
https://doi.org/10.14509/31015 |
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https://doi.org/10.14509/31015 |
Tags
- mount recheshnoi
- jag peak
- ashfall
- okmok volcano
- pleistocene
- aleutian islands
- caldera
- 40ar/39ar
- outcrop samples
- gems db l3 compliant
- radiocarbon dating
- geochronology
- okmok caldera
- lava flow
- gems db v1pt1
- 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