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
| Name | Format | Description | Link |
|---|---|---|---|
| Web Resource | Unknown | Open resource | |
| geodatabase | Unknown | geologic map | Open resource |
Tags
- 40ar/39ar
- aleutian islands
- ashfall
- bering sea
- caldera
- colorado creek
- crater creek
- crater creek basalt
- dggs
- dutch harbor
- fumarole chemistry
- gems db l3 compliant
- gems db v1pt1
- geochemical data
- geochemistry
- geochronology
- geologic
- geologic hazards
- geologic map
- geology
- gis
- glacial
- hazards
- helicopter survey
- holocene
- jag peak
- lava flow
- moraines
- mount
- mount recheshnoi
- mount vsevidof
- okmok
- okmok caldera
- okmok hot springs
- okmok volcano
- outcrop samples
- pacific ocean
- pleistocene
- pumice
- radiocarbon ages
- radiocarbon dating
- reindeer creek
- rhyolite
- rock glaciers
- scoria
- subduction
- tulik
- umnak island
- volcanic
- volcanic arc
- volcanic ash
- volcanic eruption
- volcaniclastic deposits
- volcaniclastics
- volcanic rocks
- volcanoes