Identification_Information: Citation: Citation_Information: Originator: Moshrefzadeh, J.A. Originator: Barrera, M.L. Originator: Buchanan, J.W. Originator: Naibert, T.J. Originator: Newberry, R.J. Originator: Norwood, L.P. Originator: Regan, S.P. Originator: Szumigala, D.J. Originator: Twelker, Evan Originator: Walser, S.L. Originator: Wilson, K.R. Publication_Date: 2025 Title: Field station locations and magnetic susceptibility data collected in 2025 for the Steese Project, Yukon-Tanana Uplands, Alaska Geospatial_Data_Presentation_Form: spreadsheet Series_Information: Series_Name: Raw Data File Issue_Identification: RDF 2025-28 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/10.14509/31736 Description: Abstract: Field station locations and magnetic susceptibility data collected in 2025 for the Steese Project, Yukon-Tanana Uplands, Alaska, Raw Data File 2025-28, provides locations, rock descriptions, and magnetic susceptibility measurements collected during DGGS's 2025 bedrock-mapping campaign in the Yukon-Tanana Uplands of eastern Interior Alaska. Geologists mapped at 1:100,000 scale across parts of the Big Delta, Circle, Fairbanks, and Livengood quadrangles, concentrating most fieldwork within the Steese project boundary. The 2025 campaign builds on earlier 1:250,000‑scale mapping, several detailed geologic studies, and ongoing DGGS-USGS collaboration to modernize and refine geologic data across the Yukon-Tanana Uplands. The U.S. Geological Survey (USGS) identified the map area as prospective for rare‑earth elements (REEs) and other critical and non‑critical mineral resources, prompting renewed attention to their mineral potential. 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/10.14509/31736. Purpose: The purpose of Steese project is to update and improve geologic data coverage in the Yukon-Tanana Uplands by building on previous mapping, incorporating detailed geologic studies, and supporting ongoing DGGS-USGS collaboration. These efforts focus on areas the U.S. Geological Survey has identified as prospective for rare‑earth elements and other critical and non‑critical mineral resources, providing information that supports resource evaluation, land‑use planning, and long‑term economic opportunities for the State of Alaska. Supplemental_Information: >field station data: Table of identification numbers, coordinates, station and sample descriptions, magnetic susceptibility, and an accompanying data dictionary. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2025 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -148.727866 East_Bounding_Coordinate: -143.911644 North_Bounding_Coordinate: 65.743386 South_Bounding_Coordinate: 64.372817 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Theme_Keyword: Actinolite Theme_Keyword: Albite Theme_Keyword: Amphibole Theme_Keyword: Amphibolite Theme_Keyword: Analyses Theme_Keyword: Andalusite Theme_Keyword: Andesite Theme_Keyword: Apatite Theme_Keyword: Aplite Theme_Keyword: Argillite Theme_Keyword: Arkose Theme_Keyword: Arsenopyrite Theme_Keyword: Augite Theme_Keyword: Basalt Theme_Keyword: Bedrock Theme_Keyword: Bedrock Geology Theme_Keyword: Biotite Theme_Keyword: Breccia Theme_Keyword: Calcite Theme_Keyword: Carbonates Theme_Keyword: Chalcedony Theme_Keyword: Chalcopyrite Theme_Keyword: Chemistry Theme_Keyword: Chert Theme_Keyword: Chlorite Theme_Keyword: Chromite Theme_Keyword: Clay Theme_Keyword: Clinopyroxene Theme_Keyword: Clinozoisite Theme_Keyword: Conglomerate Theme_Keyword: Copper Theme_Keyword: DGGS Theme_Keyword: Diabase Theme_Keyword: Dike Theme_Keyword: Diopside Theme_Keyword: Diorite Theme_Keyword: Dolomite Theme_Keyword: Dolostone Theme_Keyword: Earth MRI Theme_Keyword: Eclogite Theme_Keyword: Enstatite Theme_Keyword: Epidote Theme_Keyword: Faults Theme_Keyword: Feldspar Theme_Keyword: Felsic Theme_Keyword: Fluorite Theme_Keyword: Gabbro Theme_Keyword: Garnet Theme_Keyword: Garnierite Theme_Keyword: Geochronology Theme_Keyword: Geologic Theme_Keyword: Geologic Samples Theme_Keyword: Geology Theme_Keyword: Gneiss Theme_Keyword: Gold Theme_Keyword: Granite Theme_Keyword: Granodiorite Theme_Keyword: Graphite Theme_Keyword: Gravel Theme_Keyword: Graywacke Theme_Keyword: Greenschist Theme_Keyword: Greenstone Theme_Keyword: Greisen Theme_Keyword: Greywacke Theme_Keyword: Harzburgite Theme_Keyword: Hematite Theme_Keyword: Hornblende Theme_Keyword: Hornfels Theme_Keyword: Igneous Theme_Keyword: Ilmenite Theme_Keyword: Intrusive Theme_Keyword: Iron Theme_Keyword: Kyanite Theme_Keyword: Lherzolite Theme_Keyword: Limestone Theme_Keyword: Magnetic Susceptibility Theme_Keyword: Magnetite Theme_Keyword: Manganese Theme_Keyword: Marble Theme_Keyword: Marl Theme_Keyword: Metabasalt Theme_Keyword: Metabasite Theme_Keyword: Metamorphic Theme_Keyword: Metamorphism Theme_Keyword: Metavolcanics Theme_Keyword: Mica Theme_Keyword: Microfossils Theme_Keyword: Mineral Exploration Theme_Keyword: Mineral Localities Theme_Keyword: Mineral Prospect Theme_Keyword: Mineral Resources Theme_Keyword: Mineralogy Theme_Keyword: Minerals Theme_Keyword: Modeling Theme_Keyword: Monazite Theme_Keyword: Monzodiorite Theme_Keyword: Monzogranite Theme_Keyword: Monzonite Theme_Keyword: Mudstone Theme_Keyword: Muscovite Theme_Keyword: Nepheline Theme_Keyword: Olistostrome Theme_Keyword: Olivine Theme_Keyword: Orthogneiss Theme_Keyword: Outcrop Theme_Keyword: Paragonite Theme_Keyword: Phyllite Theme_Keyword: Plagioclase Theme_Keyword: Porphyry Theme_Keyword: Potassium Theme_Keyword: Pyrite Theme_Keyword: Pyroxenite Theme_Keyword: Pyrrhotite Theme_Keyword: Quartz Theme_Keyword: Quartzite Theme_Keyword: Rare Earth Elements Theme_Keyword: Ree Theme_Keyword: Rhyolite Theme_Keyword: Rocks Theme_Keyword: Rutile Theme_Keyword: Sample Location Theme_Keyword: Sandstone Theme_Keyword: Schist Theme_Keyword: Sedimentary Theme_Keyword: Sericite Theme_Keyword: Serpentine Theme_Keyword: Serpentinite Theme_Keyword: Shale Theme_Keyword: Sillimanite Theme_Keyword: Siltstone Theme_Keyword: Silver Theme_Keyword: Slate Theme_Keyword: Staurolite Theme_Keyword: Sulfides Theme_Keyword: Syenite Theme_Keyword: Talc Theme_Keyword: Tin Theme_Keyword: Titanite Theme_Keyword: Titanium Theme_Keyword: Tonalite Theme_Keyword: Tourmaline Theme_Keyword: Tremolite Theme_Keyword: Turbidite Theme_Keyword: Ultramafic Theme_Keyword: Uranium Theme_Keyword: Volcanic Theme_Keyword: Wollastonite Place: Place_Keyword_Thesaurus: Alaska Division of Geological & Geophysical Surveys Place_Keyword: Aggie Creek Place_Keyword: Beaver Creek Place_Keyword: Bedrock Creek Place_Keyword: Birch Creek Place_Keyword: Bonanza Creek Place_Keyword: Bonnifield Mining District Place_Keyword: Chatanika River Place_Keyword: Circle Mining District Place_Keyword: Cleary Creek Place_Keyword: Coffee Dome Place_Keyword: Conner Creek Place_Keyword: Cripple Creek Place_Keyword: Crooked Creek Place_Keyword: Deadwood Creek Place_Keyword: Eagle Summit Place_Keyword: Fairbanks Creek Place_Keyword: Fairbanks Mining District Place_Keyword: Flat Place_Keyword: Flat Creek Place_Keyword: Fossil Creek Place_Keyword: Fourth Of July Hill Place_Keyword: Glacier Creek Place_Keyword: Haystack Mountain Place_Keyword: Idaho Creek Place_Keyword: Independence Creek Place_Keyword: Juniper Creek Place_Keyword: Last Chance Creek Place_Keyword: Lime Peak Place_Keyword: Mastodon Creek Place_Keyword: Mastodon Dome Place_Keyword: Miller Creek Place_Keyword: Modoc Creek Place_Keyword: Montana Creek Place_Keyword: Newsboy Mine Place_Keyword: Nome Creek Place_Keyword: Ophir Creek Place_Keyword: Pinnell Mountain Trail Place_Keyword: Porcupine Creek Place_Keyword: Porcupine Dome Place_Keyword: Quartz Creek Place_Keyword: Sourdough Creek Place_Keyword: Steele Creek Place_Keyword: Table Top Mountain Place_Keyword: Tatalina River Place_Keyword: Tolovana Mining District Place_Keyword: Too Much Gold Creek Place_Keyword: Trail Creek Place_Keyword: Twelvemile Creek Place_Keyword: Twelvemile Summit Place_Keyword: Twin Buttes Place_Keyword: Yankee Creek 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: We acknowledge that we work throughout the unceded lands of the Indigenous Peoples of Alaska. Our offices are located in the ancestral home of the Lower Tanana and Dene Peoples. The DGGS Chena and Steese projects are funded by the State of Alaska and the USGS Earth Mapping Resources Initiative (Earth MRI) program under Cooperative Agreement Numbers G24AC00323 and G23AC00372. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the opinions or policies of the USGS. Mention of trade names or commercial products does not constitute their endorsement by the USGS. Cross_Reference: Citation_Information: Originator: Buchanan, J.W. Originator: Barrera, M.L. Originator: Moshrefzadeh, J.A. Originator: Truskowski, C.M. Originator: Newberry, R.J. Publication_Date: 2025 Title: LA-ICP-MS uranium-lead zircon data from samples in the Chena and Steese project areas Series_Information: Series_Name: Raw Data File Issue_Identification: RDF 2025-25 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 4 p Online_Linkage: https://doi.org/10.14509/31731 Cross_Reference: Citation_Information: Originator: Moshrefzadeh, J.A. Originator: Newberry, R.J. Publication_Date: 2025 Title: Electron probe microanalyzer data collected on samples from the Chena and Steese projects, Yukon-Tanana Uplands, Alaska Series_Information: Series_Name: Raw Data File Issue_Identification: RDF 2025-13 Publication_Information: Publication_Place: Fairbanks, Alaska, United States Publisher: Alaska Division of Geological & Geophysical Surveys Other_Citation_Details: 6 p Online_Linkage: https://doi.org/10.14509/31537 Cross_Reference: Citation_Information: Originator: Moshrefzadeh, Jamshid Originator: Acosta, M.D. Originator: Barrera, M.L. Originator: Buchanan, J.W. Originator: Naibert, T.J. Originator: Newberry, R.J. Originator: Norwood, L.P. Originator: Regan, S.P. Originator: Szumigala, D.J. Originator: Twelker, Evan Publication_Date: 2025 Title: Geochemical data from samples collected in 2024 for the Chena and Steese projects, Big Delta, Circle, Fairbanks, and Livengood quadrangles, Alaska Series_Information: Series_Name: Raw Data File Issue_Identification: RDF 2025-17 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/10.14509/31692 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: The accompanying report and data tables provide a comprehensive discussion of processing methods, with errors reported in the tables where applicable. This data is being released as part of the DGGS RDF series, which includes content describing approved techniques and methods for the collection, storage, visualization, analysis, and interpretation of scientific data. While the information has been reviewed by several geologists familiar with the study area, the data and report have not undergone formal review for technical content or conformity to DGGS editorial standards. For inquiries regarding analytical values or procedures, the originating lab is the best point of contact. Logical_Consistency_Report: Not applicable Completeness_Report: This data release is complete. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Location data for field stations were collected using GPS-enabled tablets or smartphones running the Esri Field Maps app. Data were merged into an ArcGIS geodatabase. The devices have a reported error of 10-12 m. Lineage: Process_Step: Process_Description: Field station descriptions - Location data for field stations were collected using GPS-enabled tablets or smartphones running the Esri Field Maps app, which have a reported error of 10-12 meters. Latitude and longitude were recorded in the WGS84 datum. Project geologists observed and interpreted rock and outcrop samples in the field or at the field office. Magnetic susceptibility measurements were taken using Terraplus KT-10 model handheld magnetic susceptibility meters. These meters have a maximum sensitivity of 1 x 10^-6 Systeme International (SI) units on smooth surfaces and can measure susceptibility within a range of 0.001 x 10^-3 to 1,999.99 x 10^-3 SI. The values reported here are based on individual measurements performed on representative surfaces of the sampled rock outcrops or hand samples. Up to 12 susceptibility readings were recorded at each field station. To minimize atmospheric effects, multiple sides of outcrops or hand samples were measured whenever possible. Magnetic susceptibility was not measured at a small subset of field stations due to intensely weathered hand samples or samples that were too small to cover the coil of the KT-10 meter for accurate measurement. These stations are presented with zero measurements for completeness. Process_Date: 2025 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: WGS84 Ellipsoid_Name: WGS 84 Semi-major_Axis: 6378137 Denominator_of_Flattening_Ratio: 298.257223563 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: rdf2025-28-steese_project-field-station-data.csv, rdf2025-28-steese_project-field-stations-data_dictionary.csv Entity_Type_Definition: Table of identification numbers, coordinates, station and sample descriptions, magnetic susceptibility, and an accompanying data dictionary. Entity_Type_Definition_Source: DGGS Entity_Attribute_Layer_Name: field station 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 2025-28 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: spreadsheet Format_Version_Date: 20251217 Format_Information_Content: table Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: https://doi.org/10.14509/31736 Fees: Free download Metadata_Reference_Information: Metadata_Date: 20251217 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