Description
Tephra samples and analyses from the 2018-2023 eruption of Semisopochnoi Volcano, Alaska, Raw Data File 2025-15, includes samples and analyses collected from the 2018-2023 eruption of Semisopochnoi volcano in the western Aleutian Islands, Alaska. Samples were collected during two field visits: May 30 to June 1, 2021, and June 10, 2023. A total of sixteen samples were collected across Semisopochnoi Island at varying distances from the eruption source, the north crater of Mount Young. Samples were collected from the surface on snow, grass, or other substrates that suggested deposition during recent eruptive activity but are, in all cases, aggregates of prior eruption events up to the sample date and may contain minor wind-blown contamination from older surfaces. These data and report are available from the DGGS website: http://doi.org/10.14509/31645 and a subset of the results are archived in the Geologic Database of Information on Volcanoes in Alaska (GeoDIVA; Cameron and others, 2022, doi.org/10.14509/geodiva).
Resources
| Name | Format | Description | Link |
|---|---|---|---|
| Web Resource | Unknown | Open resource | |
| Web Resource | Unknown | Open resource | |
| Web Resource | Unknown | Open resource | |
| spreadsheet | Unknown | table | Open resource |
Tags
- active volcanoes
- aeolian
- aleutian arc
- aleutian islands
- analyses
- analyses and sampling
- analytical lab results
- analytical results
- ashfall
- chemistry
- coastal
- coastal and river
- dggs
- geochemical data
- geochemistry
- geologic
- geological process
- geologic hazards
- geology
- grain size
- hazards
- igneous
- lab methods
- magmatic arc
- major oxides
- methods
- microprobe analysis
- minor oxides
- pyroclastic fall
- pyroclastics
- sample location
- semisopochnoi
- semisopochnoi island
- surface
- tephra
- volcanic
- volcanic arc
- volcanic ash
- volcanic eruption
- volcaniclastic deposits
- volcaniclastics
- volcanoes
- volcanology