Identification_Information: Citation: Citation_Information: Originator: Coombs, M.L. Originator: Cameron, C.E. Originator: Gardner, C.A. Originator: Larsen, J.F. Originator: Fierstein, J.E. Originator: Loewen, M.W. Originator: Izbekov, P.E. Originator: Dietterich, H.R. Publication_Date: 2025 Title: Previously unpublished whole-rock major- and trace-element compositions of volcanic samples from the Alaska Peninsula-Aleutian arc, Alaska Geospatial_Data_Presentation_Form: csv Series_Information: Series_Name: Raw Data File Issue_Identification: RDF 2025-2 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 9 p. Online_Linkage: https://doi.org/10.14509/31455 Description: Abstract: Previously unpublished whole-rock major- and trace-element compositions of volcanic samples from the Alaska Peninsula-Aleutian arc, Alaska, Raw Data File 2025-2, provides previously unpublished whole-rock analyses or re-analyses of lavas or other volcanic rocks from Alaska volcanoes collected by Alaska Volcano Observatory (AVO) geologists and others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 The dataset contains analyses from 16 volcanoes, including 189 previously unpublished analyses from Mount Okmok, 85 from Augustine Volcano, and 20 from Mount Spurr. All samples have been archived in the Alaska Volcano Observatory geochemical database, https://doi.org/10.14509/30058 (Cameron and others, 2019).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. Purpose: 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. 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geochemical-data: The dataset contains geochemical analyses from 16 volcanoes, including 189 previously unpublished analyses from Mount Okmok, 85 from Augustine Volcano, and 20 from Mount Spurr. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 1992 Ending_Date: 2024 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -178.840123 East_Bounding_Coordinate: 179.573100 North_Bounding_Coordinate: 61.298900 South_Bounding_Coordinate: 51.761423 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Theme_Keyword: Active Volcanoes Theme_Keyword: Analyses Theme_Keyword: Analyses and Sampling Theme_Keyword: Analytical Lab Results Theme_Keyword: Analytical Results Theme_Keyword: Andesite Theme_Keyword: Basalt Theme_Keyword: Caldera Theme_Keyword: Chemistry Theme_Keyword: DGGS Theme_Keyword: Dacite Theme_Keyword: Dome Theme_Keyword: Geochemistry Theme_Keyword: Geologic Theme_Keyword: Geology Theme_Keyword: Lahar Theme_Keyword: Petrology Theme_Keyword: Plutonic Theme_Keyword: Pumice Theme_Keyword: Rhyodacite Theme_Keyword: Rhyolite Theme_Keyword: Rocks Theme_Keyword: Sample Location Theme_Keyword: Scoria Theme_Keyword: Tephra Theme_Keyword: Ultramafic Theme_Keyword: Volcanic Theme_Keyword: Volcanic Arc Theme_Keyword: Volcanic Rocks Theme_Keyword: Volcaniclastic Deposits Theme_Keyword: Volcaniclastics Theme_Keyword: Volcanoes Theme_Keyword: Volcanology Place: Place_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Place_Keyword: Akutan Place_Keyword: Akutan Volcano Place_Keyword: Aniakchak Place_Keyword: Aniakchak Caldera Place_Keyword: Aniakchak River Place_Keyword: Ashishik Point Place_Keyword: Augustine Place_Keyword: Augustine Island Place_Keyword: Augustine Volcano Place_Keyword: Bering Sea Place_Keyword: Bogoslof Place_Keyword: Bogoslof Island Place_Keyword: Bogoslof National Wildlife Refuge Place_Keyword: Burr Point Place_Keyword: Cape Chagak Place_Keyword: Cape Idak Place_Keyword: Cape Lapin Place_Keyword: Cinder Point Place_Keyword: Colorado Creek Place_Keyword: Cook Inlet Place_Keyword: Delaware Creek Place_Keyword: Derby Point Place_Keyword: Dutton Place_Keyword: Fisher Place_Keyword: Fisher Caldera Place_Keyword: Fox Point Place_Keyword: Gareloi Place_Keyword: Hanim Unangaa Place_Keyword: Igilam Aaliicha Place_Keyword: Kagalux Place_Keyword: Kaguyak Place_Keyword: Kamchatka Place_Keyword: Kanaga Place_Keyword: Kanaga Volcano Place_Keyword: Kasatochi Place_Keyword: Kasatochi Island Place_Keyword: Kettle Cape Place_Keyword: Lamont Place_Keyword: Makushin Place_Keyword: Makushin Valley River Place_Keyword: Makushin Volcano Place_Keyword: Mount Dutton Place_Keyword: Mount Gareloi Place_Keyword: Mount Katmai Place_Keyword: Mount Okmok Place_Keyword: Mount Spurr Place_Keyword: Mount Vsevidof Place_Keyword: Nest Creek Place_Keyword: Novarupta Place_Keyword: Okmok Place_Keyword: Okmok Caldera Place_Keyword: Pochnoi Place_Keyword: Pustoi Point Place_Keyword: Qanatanam Hanii Place_Keyword: Reindeer Point Place_Keyword: Semisopochnoi Place_Keyword: Semisopochnoi Island Place_Keyword: Shishaldin Place_Keyword: Slukas Ugimga Place_Keyword: Spurr Place_Keyword: Tagalux Place_Keyword: Teapot Hill Place_Keyword: Texas Creek Place_Keyword: Tulik River Place_Keyword: Ulasuudax Place_Keyword: Unimak Place_Keyword: Vsevidof Place_Keyword: Weeping Wall Place_Keyword: Westdahl Place_Keyword: Wrangell 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. Point_of_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Alaska Division of Geological & Geophysical Surveys Contact_Position: Metadata Manager Contact_Address: Address_Type: mailing and physical Address: 3354 College Road City: Fairbanks State_or_Province: AK Postal_Code: 99709-3707 Country: USA Contact_Voice_Telephone: (907)451-5020 Contact_Facsimile_Telephone: (907)451-5050 Contact_Electronic_Mail_Address: 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. Data_Set_Credit: 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. Cross_Reference: Citation_Information: Originator: Cameron, C.E. Originator: Mulliken, K.M. Originator: Crass, S.W. Originator: Schaefer, J.R. Originator: Wallace, K.L. Publication_Date: 2019 Title: Alaska Volcano Observatory geochemical database, version 2 Series_Information: Series_Name: Digital Data Series Issue_Identification: DDS 8 v. 2 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 22 p Online_Linkage: https://doi.org/10.14509/30058 Cross_Reference: Citation_Information: Originator: Nye, C.J. Originator: Beget, J.E. Originator: Layer, P.W. Originator: Mangan, M.T. Originator: McConnell, V.S. Originator: McGimsey, R.G. Originator: Miller, T.P. Originator: Moore, R.B. Originator: Stelling, P.L. Publication_Date: 2018 Title: Geochemistry of some quaternary lavas from the Aleutian Arc and Mt. Wrangell Series_Information: Series_Name: Raw Data File Issue_Identification: RDF 2018-1 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 29 p Online_Linkage: https://doi.org/10.14509/29843 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: 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. Logical_Consistency_Report: Not applicable Completeness_Report: This data release is complete. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: 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. Lineage: Process_Step: Process_Description: 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. Process_Date: 2021 Process_Step: Process_Description: 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. Process_Date: 2022 Process_Step: Process_Description: 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 . Process_Date: 2022 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: point Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.0000001 Longitude_Resolution: 0.0000001 Geographic_Coordinate_Units: decimal degrees Geodetic_Model: Horizontal_Datum_Name: NAD83 Ellipsoid_Name: GRS 80 Semi-major_Axis: 6378137 Denominator_of_Flattening_Ratio: 298.257222101 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: rdf2025-2-geochemical-data.xlsx, rdf2025-2-geochemical-data-dictionary.xlsx Entity_Type_Definition: 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. Entity_Type_Definition_Source: DGGS, AVO, see report for additional detail Entity_Attribute_Layer_Name: geochemical-data Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: Alaska Division of Geological & Geophysical Surveys Contact_Position: Metadata Manager Contact_Address: Address_Type: mailing and physical Address: 3354 College Road City: Fairbanks State_or_Province: AK Postal_Code: 99709-3707 Country: USA Contact_Voice_Telephone: (907)451-5020 Contact_Facsimile_Telephone: (907)451-5050 Contact_Electronic_Mail_Address: 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. Resource_Description: RDF 2025-2 Distribution_Liability: 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. Standard_Order_Process: Non-digital_Form: DGGS publications are available as free online downloads or you may purchase paper hard-copies or digital files on CD/DVD or other digital storage media by mail, phone, fax, or email from the DGGS Fairbanks office. To purchase this or other printed reports and maps, contact DGGS by phone (907-451-5020), e-mail (dggspubs@alaska.gov), or fax (907-451-5050). Payment accepted: Cash, check, money order, VISA, or MasterCard. Turnaround time is 1-2 weeks unless special arrangements are made and an express fee is paid. Shipping charge will be the actual cost of postage and will be added to the total amount due. Contact us for the exact shipping amount. Fees: Contact DGGS for current pricing Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: csv Format_Version_Date: 20241227 Format_Information_Content: table Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://doi.org/10.14509/31455 Fees: Free download Metadata_Reference_Information: Metadata_Date: 20250522 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: Alaska Division of Geological & Geophysical Surveys Contact_Person: Simone Montayne Contact_Position: Metadata Manager Contact_Address: Address_Type: mailing and physical Address: 3354 College Road City: Fairbanks State_or_Province: AK Postal_Code: 99709-3707 Country: USA Contact_Voice_Telephone: (907)451-5020 Contact_Facsimile_Telephone: (907)451-5050 Contact_Electronic_Mail_Address: dggspubs@alaska.gov Hours_of_Service: 8 am to 4:30 pm, Monday through Friday, except State holidays Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Use_Constraints: If the user has modified the data in any way they are obligated to describe the types of modifications they have performed in the supporting metadata file. User specifically agrees not to imply that changes they made were approved by the Alaska Department of Natural Resources or Division of Geological & Geophysical Surveys. Metadata_Extensions: Online_Linkage: https://dggs.alaska.gov/metadata/dggs.ext Profile_Name: dggs metadata extensions