ascii_data: ASCII format line data, other ASCII data documents: Project and field reports, survey background information, gridded data explanations, other supporting documentation grids_geosoft: Geosoft-format binary grids, these grids can be viewed in ESRI ArcMap using a free plugin from Geosoft or using the free viewer available from Geosoft images_registered: GeoTiff format images of all gridded data maps_pdf_format: Printable maps in pdf format vector_data: Line path, data contours, and survey boundary in ESRI shapefile (SHP) format, ESRI Geodatabase format, and/or AutoCAD dxf format
LePain, D.L., Emond, A.M., and Edcon, Inc., 2020, Ground gravity geophysical survey of the Holitna basin area, Alaska, data compilation: Raw Data File RDF 2020-8, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Planar coordinates are encoded using coordinate pair
Abscissae (x-coordinates) are specified to the nearest .00000001
Ordinates (y-coordinates) are specified to the nearest .00000001
Planar coordinates are specified in Meters
The horizontal datum used is North American Datum of 1927.
The ellipsoid used is Clarke 1866.
The semi-major axis of the ellipsoid used is 6378206.40000000037.
The flattening of the ellipsoid used is 1/294.978698199999997.
Funding was provided by the Alaska State Legislature.
(907)451-5020 (voice)
(907)451-5050 (FAX)
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These data were collected to assist the state in assessing the hydrocarbon potential of the Holitna Basin area. The gravity data were intended to be interpreted and integrated with available geoscience data.
Edcon, Inc., 2001, Edcon land gravity survey, Holitna basin, southwest Alaska: Geophysical Report GPR 2001-1, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Blodgett, R.B., LePain, D.L., and Clough, J.G., 1999, Bibliography on the geology of the Holitna lowland and surrounding area: Raw Data File RDF 1999-3, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Burns, L.E., Emond, A.M., SIAL Geosciences, Inc., and On-line Exploration Services, Inc., 2020, Airborne magnetic geophysical survey of the Holitna basin area, Alaska, data compilation: Geophysical Report GPR 2020-13, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Burns, L.E., SIAL Geosciences, Inc., and On-line Exploration Services, Inc., 2008, Linedata and gridded data for the aeromagnetic survey of the Holitna basin area, western Alaska: Parts of the Lime Hills and Sleetmute quadrangles: Geophysical Report GPR 2008-4, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Bustin, R.M., 2002, High pressure methane adsorption isotherms, petrography and vitrinite reflectance analyses: Raw Data File RDF 2002-2, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Collazzi, E.J., 1989, Results of a summer reconnaissance of the Holitna River basin, Alaska, August 1985: Public Data File PDF 89-15, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Staff, DGGS, On-line Exploration Services, Inc., and SIAL Geosciences, Inc., 1998, Total field magnetics and flight line paths of the Holitna basin area, western Alaska: Public Data File PDF 98-27, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Staff, DGGS, On-line Exploration Services, Inc., and SIAL Geosciences, Inc., 1998, Total field magnetics of the Holitna basin area, western Alaska: Report of Investigation RI 98-14, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
LePain, D.L., Blodgett, R.B., Clough, J.G., Ryherd, T.J., and Smith, T.N., 2000, Generalized stratigraphy and petroleum potential of the Holitna region, southwest Alaska: Preliminary Interpretive Report PIR 2000-1, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
LePain, D.L., Blodgett, R.B., and Clough, J.G., 2003, Sedimentology and hydrocarbon source rock potential of Miocene-Oligocene strata, McGrath Quadrangle: An outcrop analog for the Holitna basin: Preliminary Interpretive Report PIR 2002-5, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
LePain, D.L., and Kirkham, R.A., 2015, Rock-eval pyrolysis, vitrinite reflectance, and kerogen microscopy results from Miocene carbonaceous mudstones and coals in outcrop, McGrath Quadrangle, southwestern Alaska: Report of Investigation RI 2015-3, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Meyer, J.F., and Krouskop, D.L., 1984, Preliminary gravity data, Holitna basin, southcentral Alaska: Report of Investigation RI 84-25, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
SIAL Geosciences, Inc., and On-line Exploration Services, Inc., 1998, Project report of the aeromagnetic survey for the Holitna basin area, western Alaska: Public Data File PDF 98-29, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Tyler, Roger, Scott, A.R., and Clough, J.G., 2000, Coalbed methane potential and exploration targets for rural Alaska communities: Preliminary Interpretive Report PIR 2000-2, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Zippi, P.A., 2001, Palynology of Tertiary Holitna outcrops, McGrath and Talkeetna quadrangles: Preliminary Interpretive Report PIR 2001-4, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska, United States.Online Links:
Geophysical data were acquired according to the contractor, contract, and request-for-proposals specifications. For additional detail about survey parameters, see the accompanying project report available in the documents directory of this data distribution package.
Station coordinates and elevations were obtained using the Litton Auto-Surveyor System II inertial navigation system. The surveying was tied to a number of geodetic control points.
This data set includes files that contain processed aeromagnetic measurements, electromagnetic measurements, altimetry measurements, and locational data for the entire survey area.
Data originate from one company using the same contract specifications for all data. The originating coordinate system was retained for all publication products.
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.
(907)451-5020 (voice)
(907)451-5050 (FAX)
dggspubs@alaska.gov
RDF 2020-8
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.
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.
| Data format: | DGGS geophysics datasets are typically compilations of multiple digital data file formats. These formats may include: GeoTiff, ESRI shapefile, Geosoft binary grid (GRD), Microsoft Office documents, PDF, 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), digital video (multiple formats), Geosoft ASCII XYZ, Geosoft ASCII files (PLY, i0, EXP), and KMZ |
|---|---|
| Network links: |
<http://doi.org/10.14509/30461> |
(907)451-5020 (voice)
(907)451-5050 (FAX)
dggspubs@alaska.gov