ascii_data: ASCII format line data, other ASCII data databases_geosoft: Geosoft format database of final line data, other Geosoft format databases documents: Project report and other supporting files grids_geosoft: Oasis montaj Geosoft GRD format gridded data grids_tif: Geographically registered data value rasters of gridded data, GeoTiff format. kmz: Keyhole markup language (kml) kmz archive files of project data. Viewable in Google Earth and other compatible programs maps_pdf_format: Printable and geographically registered maps in pdf format. Compatible with mobile device navigation and desktop mapping applications. models_resistivity: ACSII CSV format resistivity models in project coordinates with data field guides. Supplemental files in ASCII text, PDF, KML, image, and/or other formats vector_data: Line path and survey boundary in ESRI shapefile (SHP) format
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This work was supported by the U.S. Geological Survey (USGS) under Grant G22AC00475. 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 U.S. Government. Mention of trade names or commercial products does not constitute their endorsement by the USGS. USGS employees Patricia Macqueen and Paul Bedrosian assisted in survey design and provided field data quality assurance/quality control.
Electromagnetic surveys record electric fields in the subsurface. Active-source electromagnetic surveys use a transmitter(s) to create a changing magnetic field, which induces electrical fields in the subsurface. These electric fields create a secondary magnetic field that is recorded by a receiver(s). These data demonstrate how conductive or resistive rocks and soils are to electrical current and can be used to determine properties including rock type, alteration, saturation, and whether soils and rocks are frozen or not. In this publication, the electromagnetic data were also used to create resistivity models. The data from the Seward Peninsula airborne electromagnetic survey will improve the understanding of the geology and mineral potential in the region and promote resource exploration of the Kigluaik, Bendeleben, and Darby mountains, with an emphasis on the potential graphite resources of the region.
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 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.
| Data format: | Airborne magnetic and radiometric geophysical survey data compilation in format GeoTiff, ESRI shapefile, Geosoft binary grid (GRD), Microsoft Office documents, PDF (with or without georeferencing), ER Mapper ERS, ASCII text files (including CSV), Geosoft ASCII grid (GXF), Geosoft database, AutoCAD DXF, Geosoft plot file (PLT), Printer files (HPP, PRN, or other), digital images (multiple formats), georeferenced photos (multiple formats), digital video (multiple formats), Geosoft ASCII XYZ, Geosoft ASCII files (PLY, i0, EXP), and KMZ. |
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| Network links: |
https://doi.org/10.14509/31303 |