Previously unpublished whole-rock major- and trace-element compositions of volcanic samples from the Alaska Peninsula-Aleutian arc, Alaska

Metadata also available as - [Parseable text] - [XML]

Frequently anticipated questions:

What does this data set describe?

Title:
Previously unpublished whole-rock major- and trace-element compositions of volcanic samples from the Alaska Peninsula-Aleutian arc, Alaska
Abstract:
Previously unpublished whole-rock major- and trace-element compositions of volcanic samples from the Alaska Peninsula-Aleutian arc, Alaska, Raw Data File 2025-2, provides previously unpublished whole-rock analyses or re-analyses of lavas or other volcanic rocks from Alaska volcanoes collected by Alaska Volcano Observatory (AVO) geologists and others from 1992 to 2021 (see accompanying spreadsheets of geochemical analyses and applicable metadata). This data describes the nature and character of samples from a past eruption to aid in discussing Alaskan volcanism's spatial and temporal patterns. In addition, the work supports improvements to eruption scenario forecasts and hazard response. All analyses were made by the GeoAnalytical laboratory at Washington State University (WSU) in Pullman, Washington. The dataset contains analyses from 16 volcanoes, including 189 previously unpublished analyses from Mount Okmok, 85 from Augustine Volcano, and 20 from Mount Spurr. All samples have been archived in the Alaska Volcano Observatory geochemical database, https://doi.org/10.14509/30058 (Cameron and others, 2019). These data and report are available from the DGGS website: http://doi.org/10.14509/31455.
Supplemental_Information: 
geochemical-data:    The dataset contains geochemical analyses from 16 volcanoes, including 189 previously unpublished analyses from Mount Okmok, 85 from Augustine Volcano, and 20 from Mount Spurr.
  1. How might this data set be cited?
    Coombs, M.L., Cameron, C.E., Gardner, C.A., Larsen, J.F., Fierstein, J.E., Loewen, M.W., Izbekov, P.E., and Dietterich, H.R., 2025, Previously unpublished whole-rock major- and trace-element compositions of volcanic samples from the Alaska Peninsula-Aleutian arc, Alaska: Raw Data File RDF 2025-2, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 9 p.
  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -178.840123
    East_Bounding_Coordinate: 179.573100
    North_Bounding_Coordinate: 61.298900
    South_Bounding_Coordinate: 51.761423
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 1992
    Ending_Date: 2024
    Currentness_Reference:
    ground condition
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: csv
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      This is a point data set.
    2. What coordinate system is used to represent geographic features?
      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.0000001. Longitudes are given to the nearest 0.0000001. Latitude and longitude values are specified in decimal degrees. The horizontal datum used is NAD83.
      The ellipsoid used is GRS 80.
      The semi-major axis of the ellipsoid used is 6378137.
      The flattening of the ellipsoid used is 1/298.257222101.
  7. How does the data set describe geographic features?
    rdf2025-2-geochemical-data.xlsx, rdf2025-2-geochemical-data-dictionary.xlsx
    The dataset contains geochemical analyses from 16 volcanoes, including 189 previously unpublished analyses from Mount Okmok, 85 from Augustine Volcano, and 20 from Mount Spurr. (Source: DGGS, AVO, see report for additional detail)

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
  2. Who also contributed to the data set?
    We appreciate Travis Naibert's data review and Simone Montayne's metadata review. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
  3. To whom should users address questions about the data?
    Alaska Division of Geological & Geophysical Surveys
    Metadata Manager
    3354 College Road
    Fairbanks, AK
    USA

    (907)451-5020 (voice)
    (907)451-5050 (FAX)
    dggspubs@alaska.gov
    Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays
    Contact_Instructions:
    Please view our website (https://www.dggs.alaska.gov) for the latest information on available data. Please contact us using the e-mail address provided above when possible.

Why was the data set created?

This data describes the nature and character of samples from a past eruption to aid in discussing Alaskan volcanism's spatial and temporal patterns. In addition, the work supports improvements to eruption scenario forecasts and hazard response.

How was the data set created?

  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
    Date: 2021 (process 1 of 3)
    Sample collection and analysis - Bulk lava and tephra samples were collected from 1992 to 2021 from 16 volcanoes throughout the Quaternary Alaska Peninsula-Aleutian arc. Sample originators and collection details for each sample are noted in the report and in the data table.
    Date: 2022 (process 2 of 3)
    Sample preparation - Bulk lava and tephra samples were generally crushed to approximately 1-cm pieces, sonicated, and dried before submittal to the Washington State University (WSU) Peter Hooper GeoAnalytical Laboratory for X-ray fluorescence (XRF) and solution Inductively Coupled Plasma-Mass Spectrometry (ICP-MS) analysis.
    Date: 2022 (process 3 of 3)
    Analytical methods - Procedures used followed Johnson and others (1999) and technical notes posted at environment.wsu.edu/facilities/geoanalytical-lab/technical-notes /. Detailed analysis and discussion of major and trace element uncertainty for samples submitted to this lab are provided in Nye and others (2018), who demonstrated 2 sigma precision of less than 0.5 relative percent for major oxides (1.2 relative percent for FeOT ) and four4 relative percent for most trace elements. Following Nye and others (2018), all ICP-MS data have been reduced using the 2006 calibration to ensure internal consistency of the data set despite the twenty-year span over which the analyses were made .
  3. What similar or related data should the user be aware of?
    Cameron, C.E., Mulliken, K.M., Crass, S.W., Schaefer, J.R., and Wallace, K.L., 2019, Alaska Volcano Observatory geochemical database, version 2: Digital Data Series DDS 8 v. 2, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 22 p
    Nye, C.J., Beget, J.E., Layer, P.W., Mangan, M.T., McConnell, V.S., McGimsey, R.G., Miller, T.P., Moore, R.B., and Stelling, P.L., 2018, Geochemistry of some quaternary lavas from the Aleutian Arc and Mt. Wrangell: Raw Data File RDF 2018-1, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.

    Online Links:

    Other_Citation_Details: 29 p

How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?
    The accompanying report and data tables provide a comprehensive discussion of processing methods. When applicable, errors are reported in the data tables. These data are being released in the DGGS Raw Data File series. Reports in this series present field data and analytical results with limited or no interpretation by DGGS staff or project collaborators. Analytical results may include interpretations by laboratories when an interpretive review of the analytical findings is necessary to develop usable output. The reports and accompanying data have been evaluated by project staff for general readability and logical consistency but have not undergone technical peer review.
  2. How accurate are the geographic locations?
    Methods for obtaining location coordinates varies throughout the data. Coordinates for most modern samples were collected using handheld GPS units. Locations for older samples were digitized from field maps or visually approximated using web-based satellite imagery. In a few cases, the originating location coordinates were lost and location information is limited to the volcano name. Positional accuracy was not recorded.
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    This data release is complete.
  5. How consistent are the relationships among the observations, including topology?
    Not applicable

How can someone get a copy of the data set?

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.
  1. Who distributes the data set? (Distributor 1 of 1)
    Alaska Division of Geological & Geophysical Surveys
    Metadata Manager
    3354 College Road
    Fairbanks, AK
    USA

    (907)451-5020 (voice)
    (907)451-5050 (FAX)
    dggspubs@alaska.gov
    Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays
    Contact_Instructions:
    Please view our website (https://www.dggs.alaska.gov) for the latest information on available data. Please contact us using the e-mail address provided above when possible.
  2. What's the catalog number I need to order this data set? RDF 2025-2
  3. What legal disclaimers am I supposed to read?
    The State of Alaska makes no expressed 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.
  4. How can I download or order the data?

Who wrote the metadata?

Dates:
Last modified: 22-May-2025
Metadata author:
Alaska Division of Geological & Geophysical Surveys
Attn: Simone Montayne
Metadata Manager
3354 College Road
Fairbanks, AK
USA

(907)451-5020 (voice)
(907)451-5050 (FAX)
dggspubs@alaska.gov
Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays
Metadata standard:
FGDC Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)
Metadata extensions used:
Generated by mp version 2.9.50 on Thu May 22 18:53:00 2025