Carbon: Radiocarbon results for a subset of samples. This table can be linked to the Samples table by the SampleID and at_num columns. EPMA: Electron microprobe glass analyses. Most analyses are of matrix glass although a few melt inclusion analyses are included, as indicated by a suffix on the at_num and in the sample description. This table can be linked to the Samples table by the SampleID and at_num columns. GlassAvg: Synthesizes EPMA and Laser analyses as a single row for each sample and uncertainties calculated from repeat sample analyses. This table can be linked to the Samples table by the SampleID and at_num columns. Laser: Laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) analyses of matrix glass. The table also includes the electron microprobe analyses associated with each laser analysis, and thus duplicates some information the EPMA table. This table can be linked to the Samples table by the SampleID and at_num columns. LaserStandards: Laser ablation secondary standard results. LaserStandardSummary: Summary statistics for laser ablation secondary standards. Unlike other tables this is not machine-readable and acts as a set of supplementary tables to the text. Layers: Stratigraphic observations collected at a subset of stations. Station data can be linked with the StationID column. Samples: Metadata for collected samples. Samples can be linked to the Stations or Layers data through the StationID and layer_name columns. Stations: Station observations and station coordinates. WholeRock: Bulk whole rock major and trace element analyses. This table can be linked to the Samples table by the SampleID and at_num columns.
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Sampling was done with essential work support by helicopter pilot Mike Grover, as well as the R/V Steadfast crew and AVO field teams during the 2021 western Aleutian Islands analog-to-digital network upgrade. Analytical assistance was provided by Pavel Izbekov (EPMA) and Chris Russo (LA-ICP-MS). Data preparation and metadata review were provided by Cheryl Cameron, Simone Montayne, and editorial handling by Kirsten Janssen. Data review provided by Simone Montayne. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
The only prior published work on Davidof volcano was part of the U.S. Geological Survey's post World War II geologic reconnaissance of the Aleutian Islands (Nelson and others, 1959). Nelson and others (1959) only indicate two samples from Davidof volcano that were analyzed petrographically, but prior to this data release no quantitative data for Davidof volcano have been available. This research describes the nature and character of samples from a past eruption to aid in the discussion of spatial and temporal patterns of Alaska volcanism. In addition, the work supports improvements to eruption scenario forecasts and hazard response.
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Are there legal restrictions on access or use of the data?Access_Constraints:
This report, map, and/or dataset is available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below).Use_Constraints:Any hard copies or published datasets utilizing these datasets shall clearly indicate their source. If the user has modified the data in any way, the user is obligated to describe the types of modifications the user has made. The user specifically agrees not to misrepresent these datasets, nor to imply that changes made by the user were approved by the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys. The State of Alaska makes no express or implied warranties (including warranties for merchantability and fitness) with respect to the character, functions, or capabilities of the electronic data or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products or any failure thereof or otherwise. In no event will the State of Alaska's liability to the Requestor or anyone else exceed the fee paid for the electronic service or product.
The State of Alaska makes no express or implied warranties (including warranties of merchantability and fitness) with respect to the character, function, or capabilities of the electronic services or products or their appropriateness for any user's purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential, or other damages suffered by the user or any other person or entity, whether from the use of the electronic services or products, any failure thereof, or otherwise, and in no event will the State of Alaska's liability to the requestor or anyone else exceed the fee paid for the electronic service or product.
| Data format: | table in format csv |
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| Network links: |
http://dx.doi.org/10.14509/31084 |