Identification_Information: Citation: Citation_Information: Originator: Twelker, Evan Originator: Walser, S.L. Originator: Montayne, Simone Publication_Date: 2025 Title: Major-oxide and trace-element geochemical data from rocks collected near the Dalton Highway, Yukon River crossing, Alaska Geospatial_Data_Presentation_Form: csv Series_Information: Series_Name: Raw Data File Issue_Identification: RDF 2025-29 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 3 p. Online_Linkage: https://doi.org/10.14509/31737 Description: Abstract: Major-oxide and trace-element geochemical data from rocks collected near the Dalton Highway, Yukon River crossing, Alaska, Raw Data File 2025-29, provides major-oxide and trace-element geochemical data from rocks collected near the Dalton Highway, Yukon River Crossing, Alaska. Geologists from the Alaska Division of Geological and Geophysical Surveys (DGGS) conducted fieldwork between June and July 2016 in the Livengood D-6, C-6, and northern B-6 quadrangles, as part of the Yukon River Crossing Capital Improvement Project. The study area spans about 567 mi2 (1,458 km2) and includes a geologically complex and vulnerable segment of the Trans Alaska Pipeline and Dalton Highway. The project seeks to improve understanding of the local geology and evaluate the potential for slope instability near the Yukon River highway crossing, where a 2012 landslide occurred west of the bridge's south abutment. The team collected igneous and metamorphic rock samples and conducted whole-rock geochemical analyses, including major oxide and trace element concentrations, to define map units and assess lithologic variability relevant to slope stability and infrastructure risk. These data are provided as a Raw Data File under an open end-user license and are available on the DGGS website: http://doi.org/10.14509/31737. Purpose: The Yukon River Crossing Capital Improvement Project provides major-oxide and trace-element geochemical data from igneous and metamorphic rock samples collected near the Dalton Highway, Yukon River Crossing, Alaska. This research strengthens the safety and reliability of the Trans Alaska Pipeline and Dalton Highway by improving understanding of local geology and identifying areas at risk of slope instability. The results help protect Alaska's communities by reducing landslide hazards, ensuring secure transportation routes, and safeguarding critical energy infrastructure that supports public safety, economic stability, and resource development across the state. Supplemental_Information: >geochemistry-download: Digital data available through the Alaska Geochemistry database online. Download files include data, analytical methods, and detection limits. Time_Period_of_Content: Time_Period_Information: Range_of_Dates/Times: Beginning_Date: 2012 Ending_Date: 2025 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -149.929580 East_Bounding_Coordinate: -149.586493 North_Bounding_Coordinate: 65.753845 South_Bounding_Coordinate: 65.422686 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Theme_Keyword: Analyses Theme_Keyword: Analyses and Sampling Theme_Keyword: Analytical Lab Results Theme_Keyword: Analytical Results Theme_Keyword: Basalt Theme_Keyword: Bedrock Theme_Keyword: Bedrock Geology Theme_Keyword: Biotite Theme_Keyword: Chemistry Theme_Keyword: DGGS Theme_Keyword: Feldspar Theme_Keyword: Gabbro Theme_Keyword: Garnet Theme_Keyword: Geochemistry Theme_Keyword: Geology Theme_Keyword: Greenstone Theme_Keyword: Igneous Theme_Keyword: Landslide Theme_Keyword: Lithology Theme_Keyword: Metamorphic Theme_Keyword: Methods Theme_Keyword: Mineralogy Theme_Keyword: Muscovite Theme_Keyword: Outcrop Theme_Keyword: Pipeline Theme_Keyword: Rocks Theme_Keyword: Slope Instability Place: Place_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Place_Keyword: Alder Creek Place_Keyword: Blizzard Creek Place_Keyword: Dalton Highway Place_Keyword: Dawson Creek Place_Keyword: Grouse Creek Place_Keyword: Gunnison Creek Place_Keyword: Hess Creek Place_Keyword: Hunter Creek Place_Keyword: Huron Creek Place_Keyword: Isom Creek Place_Keyword: Lynx Creek Place_Keyword: Miller Creek Place_Keyword: Nugget Creek Place_Keyword: Orphan Creek Place_Keyword: Quail Creek Place_Keyword: Rampart Mining District Place_Keyword: Raven Creek Place_Keyword: Raven Creek Hill Place_Keyword: Sluicebox Creek Place_Keyword: Texas Creek Place_Keyword: Troublesome Creek Place_Keyword: Union Creek Place_Keyword: Whymper Creek Place_Keyword: Willow Creek Place_Keyword: Yukon River Place_Keyword: Yukon-Tanana Upland 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: This work was made possible through funding from a capital improvement project sponsored by the State of Alaska. We gratefully acknowledge the U.S. Bureau of Land Management, Doyon Limited, Ban O Yeel Kon Corporation, and the U.S. Fish & Wildlife Service for providing the necessary permits to conduct this fieldwork. Cross_Reference: Citation_Information: Originator: Hubbard, T.D. Originator: Koehler, R.D. Originator: Twelker, Evan Originator: Jose, Aleena Merin Originator: Walser, S.L. Originator: Crawford, N.E. Originator: Barefoot, J.D. Publication_Date: 2025 Title: Field station locations and magnetic susceptibility data for the Yukon River Crossing Project, Alaska, collected June-July 2016 Series_Information: Series_Name: Raw Data File Issue_Identification: RDF 2025-22 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 2 p Online_Linkage: https://doi.org/10.14509/31726 Cross_Reference: Citation_Information: Originator: Koehler, R.D. Publication_Date: 2020 Title: Assessment of potentially active faults in the northwestern Livengood Quadrangle, Alaska Series_Information: Series_Name: Report of Investigation Issue_Identification: RI 2020-4 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 35 p Online_Linkage: https://doi.org/10.14509/30435 Cross_Reference: Citation_Information: Originator: Koehler, R.D. Originator: Reger, R.D. Originator: Sicard, K.R. Originator: Spangler, E.R. Publication_Date: 2013 Title: Yukon River bridge landslide: Preliminary geologic and geotechnical evaluation Series_Information: Series_Name: Preliminary Interpretive Report Issue_Identification: PIR 2013-6 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 69 p Online_Linkage: https://doi.org/10.14509/25642 Cross_Reference: Citation_Information: Originator: Wolken, G.J. Originator: Wikstrom Jones, K.M. Publication_Date: 2019 Title: Photogrammetry-derived digital surface model and orthoimagery of areas near the Dalton Highway, Yukon River Crossing, Alaska Series_Information: Series_Name: Raw Data File Issue_Identification: RDF 2019-4 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 5 p Online_Linkage: https://doi.org/10.14509/30183 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: DGGS ensured analytical accuracy by including one standard reference material for every batch of 10 samples. ALS Geochemistry's internal quality-control procedures are accredited under ISO/IEC 17025:2005. Logical_Consistency_Report: Not applicable Completeness_Report: This data releaase is complete. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Staff recorded geographic coordinates for sample stations using Trimble Juno T41/5 WAAS-enabled GPS devices running ArcGIS for Windows Mobile. WAAS-enabled GPS devices have a reported error of about 1 m. Latitude and longitude are reported in the NAD83 datum. Lineage: Process_Step: Process_Description: Sample selection - DGGS staff collected fist-sized rock specimens for whole-rock major-oxide and trace-element geochemical analysis to support lithologic classification, unit correlation, and interpretation of the regional tectonic framework. They selected the least altered exposures at each site to ensure representative geochemical signatures. Staff recorded geographic coordinates for sample stations using GPS-enabled tablets and smartphones running the ESRI Field Maps application, which typically provides positional accuracy within approximately 10 meters. Process_Date: 2024 Process_Step: Process_Description: Sample preparation - DGGS staff trimmed samples using a rock saw to remove weathering rinds and altered areas. ALS Geochemistry then processed the samples using their PREP-31 package. The samples were crushed to greater than 70 percent passing 2 mm, and a 250 g split was pulverized to greater than 85 percent passing 75 microns. Process_Date: 2012 Process_Step: Process_Description: Geochemistry - ALS Geochemistry analyzed the samples for major and trace element suites using a range of specialized techniques. Platinum, palladium, and gold values were determined by 30 g fire assay with ICP-MS finish (method PGM-MS23). Major and minor oxides were measured using lithium metaborate fusion digestion and ICP-AES (method ME-ICP06), while major and trace elements, including rare-earth elements, were analyzed by lithium metaborate fusion digestion and ICP-MS (method ME-MS81). Concentrations of Ag, Cd, Co, Cu, Li, Mo, Ni, Pb, Sc, and Zn were obtained through four-acid digestion and ICP-AES (method ME-4ACD81), and As, Bi, Hg, In, Re, Sb, Se, Te, and Tl were determined by aqua regia digestion followed by ICP-MS (method ME-MS42). Total carbon and sulfur were measured using a Leco furnace (methods C-IR07 and S-IR08). Process_Date: 2012 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: point Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Geographic: Latitude_Resolution: 0.000001 Longitude_Resolution: 0.000001 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: geochemistry-download Entity_Type_Definition: Digital data available through the Alaska Geochemistry database online. Download files include data, analytical methods, and detection limits. Entity_Type_Definition_Source: Alaska Division of Geological & Geophysical Surveys (DGGS) Entity_Attribute_Layer_Name: geochemistry-download 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 2025-29 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: 20251209 Format_Information_Content: table Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://doi.org/10.14509/31737 Fees: Free download Metadata_Reference_Information: Metadata_Date: 20251209 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