Reger, R.D., Hubbard, T.D., and Gallagher, P.E., 2012, Surficial geology of the Alaska Highway corridor, Tetlin Junction to Canada border, Alaska: Preliminary Interpretive Report PIR 2012-1A, Alaska Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
This is a Vector data set.
Planar coordinates are encoded using coordinate pair
Abscissae (x-coordinates) are specified to the nearest 0.000001
Ordinates (y-coordinates) are specified to the nearest 0.000001
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 6378206.4.
The flattening of the ellipsoid used is 1/294.9786982.
| Value | Definition |
|---|---|
| lake | Polygon unit is a lake |
| Formal codeset | |
|---|---|
| Codeset Name: | PIR2012-1A, Description of Surficial-Geologic Map Units |
| Codeset Source: | Reger, R.D., Hubbard, T.D., and Gallagher. P.E., Surficial geology of Alaska Highway corridor, Tetlin Junction to Canada border, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2012-1A, 25 p., see Sheet 1 and Sheet 2 |
Label: F indicates Fossil locality, M indicates soil moisture locality, RC indicates radiocarbon locality, SP indicates soil pit locality,T indicates tephra locality, and V indicates ventifact sites
| Value | Definition |
|---|---|
| Fossil locality | Fossil localities discussed in text |
| Soil moisture locality | Soil moisture localities discussed in text |
| Radiocarbon locality | Radiocarbon localities discussed in text |
| Soil pit | Soil pits discussed in text |
| Tephra locality | Tephra locality discussed in text |
| Ventifact site | Ventifact sites discussed in text |
This research was supported by Alaska State Capital Improvement Projects funding. The authors gratefully acknowledge the helpful review by Diana N. Solie, and able cartographic assistance by James Weakland.
(907)451-5029 (voice)
dggsgis@alaska.gov
The Alaska Division of Geological & Geophysical Surveys conducted this project, funded by the state legislature, to evaluate the geology, geohazard and material resources along the Alaska Highway corridor from Delta Junction to the Canada border. This was in preparation for a proposed natural gas pipeline, so that a baseline of geologic data would be publicly available upon which preliminary decisions could be made. The work was designed to serve as the springboard for the detailed work which would be required if a pipeline were to be built along this corridor.
U.S. Geological Survey, 1972, Tanacross A-1 Quadrangle: U.S. Geological Survey, Washington D.C..
U.S. Geological Survey, 1974, Tanacross A-2 Quadrangle: U.S. Geological Survey, Washington D.C..
U.S. Geological Survey, 2000, Tanacross A-3 Quadrangle: U.S. Geological Survey, Washington D.C..
U.S. Geological Survey, 1967, Tanacross B-3 Quadrangle: U.S. Geological Survey, Washington D.C..
U.S. Geological Survey, 1963, Nabesna C-1 Quadrangle: U.S. Geological Survey, Washington D.C..
U.S. Geological Survey, 1967, Nabesna D-1 Quadrangle: U.S. Geological Survey, Washington D.C.
U.S. Geological Survey, 1978, Nabesna D-2 Quadrangle: U.S. Geological Survey, Reston, VA.
U.S. Geological Survey, 2000, Nabesna D-3 Quadrangle: U.S. Geological Survey, Reston, VA.
Carter, L.D., and Galloway, J.P., 1978, Preliminary engineering geologic maps of the proposed natural gas pipeline route in the Tanana River valley, Alaska: Open-file report OF 78-794, U.S. Geological Survey, United States.
Duk-Rodkin, Alejandra, Barendregt, R.W., Froese, D.G., Weber, Florence, Enkin, Randy, Smith, I.R., Waters, Pamela, and Klassen, Rudy, 2004, Timing and extent of Plio-Pleistocene glaciations in northwestern Canada: Development in Quaternary Science v.2, Elsevier, New York.
Ehlers, J., and Gibbard, P.L., 2004, Quaternary glaciations-extent and chronology, part II: North America: Development in Quaternary Science v. 2, Elsevier, New York.
Easton, N.A., Yesner, D.R., Hutchinson, Vance, Schnurr, Peter, and Baker, Christopher, 2009, Wisconsin-interstadial(?), terminal-Pleistocene, and early Holocene radiocarbon dates from the Little John site, southwest Yukon Territory, Canada: Current Research in the Pleistocene v. 26.
Fernald, A.T., 1965, Glaciation in the Nabesna River area, upper Tanana River valley, Alaska: U.S. Geological Survey Professional Paper 525-C.
U.S. Geological Survey, 1965, Geological survey research 1965, Chapter C.
Fernald, A.T, 1965, Recent history of the upper Tanana River Lowland, Alaska: U.S. Geological Survey Professional Paper 525-C.
U.S. Geological Survey, 1965, Geological survey research 1965, Chapter C.
Foster, H.L., 1970, Reconnaissance geologic map of the Tanacross Quadrangle, Alaska: U.S. Geological Survey Miscellaneous Geologic Investigations Map I-593, U.S. Geological Survey, united states.
Hamilton, T.D., 1994, Late Cenozoic glaciation of Alaska: Geology of North America v. G-1, Geological Society of America, United States.
Plafker, George, and Berg, H.C., 1994, The Geology of Alaska: Geology of North America v. G-1, Geological Society of America, United States.
Kreig, R.A., and Reger, R.D., 1976, Preconstruction terrain evaluation for the trans-Alaska pipeline project: Dowden, Hutchinson, and Ross, Stroudsburg.
Coates, D.R., 2011, Geomorphology and engineering.
Kreig, R.A., and Reger, R.D., 1982, Air-photo analysis and summary of land-form soil properties along the route of the Trans-Alaska Pipeline System: Geologic Report GR-66, Alaska Division of Geological & Geophysical Surveys, Fairbanks AK.
Lea, P.D., and Waythomas, C.F., 1990, Late-Pleistocene eolian sand sheets in Alaska: Quaternary Research v. 34, no. 3.
Pewe, T.L., 1975, Quaternary geology of Alaska: Professional Paper P 835, U.S. Geological Survey, United States.
Pewe, T.L., and Reger, R.D., 1983, Middle Tanana River valley: Guidebook Guidebook 1, Alaska Division of Geological & Geophysical Surveys, Fairbanks AK.
Pewe, T.L., ed., and Reger, R.D., ed., 1983, Guidebook to permafrost and Quaternary geology along the Richardson and Glenn Highways between Fairbanks and Anchorage, Alaska: Guidebook Guidebook 1, Alaska Division of Geological & Geophysical Surveys, Fairbanks AK.
Richter, D.H., 1976, Geologic map of the Nabesna Quadrangle, Alaska: U.S. Geological Survey Miscellaneous Investigations Map I-932.
Wahrhaftig, Clyde, 1965, Physiographic divisions of Alaska.
Wallace, R.E., 1948, Cave-in lakes in the Nabesna, Chisana, and Tanana River valleys, eastern Alaska: Journal of Geology v. 56, no. 3.
Weber, F.R., 1986, Glacial geology of the Yukon-Tanana Upland: Alaska Geological Society, Anchorage, Alaska.
Hamilton, T.D., ed., Reed, K.M., ed., and Thorson, R.M., ed., 1986, Glaciation in Alaska; The geologic record: Alaska Geological Society, Anchorage, Alaska.
U.S. Geological Survey, Unknown, Alaska High Altitude Photography Program: U.S. Geological Survey, Unknown.
Data sources used in this process:
Data sources used in this process:
Data sources used in this process:
Carver, G.A., Bemis, S.P., Solie, D.N., Castonguay, S.R., and Obermiller, K.E., 2010, Active and potentially active faults in or near the Alaska Highway corridor, Dot Lake to Tetlin Junction, Alaska: Preliminary Interpretive Report PIR 2010-1, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Carver, G.A., Bemis, S.P., Solie, D.N., and Obermiller, K.E., 2008, Active and potentially active faults in or near the Alaska Highway corridor, Delta Junction to Dot Lake, Alaska: Preliminary Interpretive Report PIR 2008-3D, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Hubbard, T.D., and Reger, R.D., 2010, Engineering-geologic map of the Alaska Highway corridor, Robertson River to Tetlin Junction, Alaska: Preliminary Interpretive Report PIR 2009-6B, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Hubbard, T.D., and Reger, R.D., 201010, Model for Late Wisconsinan Massive Outburst Flooding, Tok River Valley, Northeastern Alaska Range: Geological Society of America Abstracts with Programs vol. 42, No. 5, Geological Society of America, Boulder, CO.
Hubbard, T.D., Reger, R.D., and Gallagher, P.E., 2011, Using lidar to refine geologic mapping and interpretations in the upper Tanana River valley, central Alaska: Geological Society of America Abstracts with Programs v. 43, no. 5, Geological Society of America, Boulder, CO.
Koehler, R.D., and Carver, G.A., 2012, Active and potentially active faults along the Alaska Highway corridor, Tetlin Junction to the Canada border: Preliminary Interpretive Report PIR 2012-2, Alaska Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Reger, R.D., and Hubbard, T.D., 2009, Evidence for late Wisconsinan outburst floods in the Tok-Tanacross Basin. upper Tanana River Valley, east-central Alaska: Geological Society of America Abstracts with Programs V. 41, No. 7, Geological Society of America, Boulder, CO.
Reger, R.D., and Hubbard, T.D., 2010, Reconnaissance interpretation of 1978-1983 permafrost, Alaska Highway corridor, Robertson River to Tetlin Junction, Alaska: Preliminary Interpretive Report PIR 2009-6C, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Reger, R.D., Hubbard, T.D., and Carver, G.A., 2011, Surficial geology of Alaska Highway corridor, Robertson River to Tetlin Junction, Alaska: Preliminary Interpretive Report PIR 2009-6A, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Reger, R.D., Hubbard, T.D., and Gallagher, P.E., 2012, Reconnaissance interpretation of 1978-1981 permafrost, Alaska Highway corridor, Tetlin Junction to Canada border, Alaska: Preliminary Interpretive Report PIR 2012-1C, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Reger, R.D., Hubbard, T.D., and Gallagher, P.E., Unknown, Engineering geology map, Alaska Highway corridor, Tetlin Junction to Canada border, Alaska: Preliminary Interpretive Report PIR 2012-1B, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.
Reger, R.D., and Solie, D.N., 2008, Engineering-geologic map, Alaska Highway corridor, Delta Junction to Dot Lake, Alaska: Preliminary Interpretive Report PIR 2008-3B, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Reger, R.D., and Solie, D.N., 2008, Reconnaissance interpretation of permafrost, Alaska Highway corridor, Delta Junction to Dot Lake, Alaska: Preliminary Interpretive Report PIR 2008-3C, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Reger, R.D., Stevens, D.S.P., and Solie, D.N., 2008, Surficial-geologic map, Delta Junction to Dot Lake, Alaska Highway corridor: Preliminary Interpretive Report PIR 2008-3A, Alaska Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Reger, R.D., Stevens, D.S.P, and Solie, D.N., 2008, Evidence of multiple outburst floods, upper Tanana River valley, east-central Alaska: Geological Society of America Abstracts with Programs v. 40, no. 1, Geological Society of America, Boulder, CO.
Soil colors were described using the Munsell soil color charts. The Wentworth scale was used for grain size classification. Soil horizon descriptions in the map area used the U.S. Soil Conservation Service soil taxonomy (Soil Survey Staff, 1975). Sediment samples were collected for sieve analysis and radiocarbon age dating. Analytical data described above were utilized in developing the geologic interpretations presented in this report. The accuracy of the map unit boundary locations vary due to the scale and interpretive nature of the mapping but are expected to be accurate to at least 50 ft. Map units labeled with a "?" are considered to have an uncertain assignation. Information from previous geologic reports was incorporated during the interpretation process. To check attribute accuracy of the digital files we visually compared the original compilation against test plots of the files and corrected discrepancies between the digital geospatial dataset and the original analog as needed. The geologic interpretations presented in this report have undergone technical review by a geologist familiar with the subject of the report and the geology of the map area. We incorporated the reviewer's suggestions into the final draft when deemed appropriate.
The surficial interpretations were first hand-drawn, using a magnifying stereoscope, onto acetate air-photo overlays at the scale of the air-photos (approximately inch to the mile). The accuracy of the map unit boundary locations varies due to the scale and interpretive nature of the mapping and pen line width of approximately 0.001 meters which is equivalent to approximately 1.5 meters on the ground. The hand drawn map unit boundaries are expected to be accurate to at least 15 meters. Following interpretation, acetate overlays were then individually scanned, orthorectified and georeferenced using Orthomapper, v. 3.6. The air-photos were orthorectified, photo-mosaiced and georeferenced. Surficial unit boundaries were digitized on-screen into ArcGIS from the orthorectified overlays at a scale more detailed than 1:63,360, using a combination of a USGS topographic 1:63.360 map layer and the air-photo photomosaic layer to verify the position of the lines and points. Map error is induced by: (1) Scanning and orthorectifying air photos and overlays. The digitizing RMS error is generally constrained to be less than 4 pixels, equating to approximately 20 m on the ground, although some areas with rugged terrain have larger errors. 2) On-screen digitizing from orthorectified overlays. The accuracy of the human operator digitizing polylines and point localities is related to the accuracy of interpretations from the orthorectified photos and overlays. Total horizontal accuracy of the mapped surficial-geologic contacts is thus on the order of 25 m or better, with somewhat lesser accuracy expected in areas of rugged relief. Coordinates of soil pits, radiocarbon sampling localities, and other field sites that are discussed in the text were recorded using a Garmin GPS model 76CSx with an estimated precision generally less than 10 meters.
This dataset includes shapefiles that contain information about surficial geologic units mapped in this area. This dataset utilizes field observations and air photo interpretations. It includes geospatial information about units traceable on air photos at a scale of ~1:65000 and/or in the field. The dataset displays: surficial geologic units and contacts, inferred geologic contacts, and point localities discussed in the text. Subsurface data available for this investigation includes about ~15 soil pits dug to depths no more than 1.3 m and observations of exposures in gravel pits, highway cuts, and river bank exposures.
Polygon topology is present and clean on the original geospatial dataset. All polygon features were topologically validated using the ESRI ArcGIS 10 software prior to export to shape file format. The logical consistency of the point files has been visually checked but not systematically verified.
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
PIR 2012-1A
The State of Alaska makes no express or implied warranties (including warranties of merchantability and fitness) with respect to the character, function, or capabilities of the electronic services 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, any failure thereof, or otherwise, and 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: | SHP |
|---|---|
| Network links: |
<http://dx.doi.org/10.14509/23443> |
(907)451-5020 (voice)