Reger, R.D.
Hubbard, T.D.
Gallagher, P.E.
2012
Surficial geology of the Alaska Highway corridor, Tetlin Junction to Canada border, Alaska
document, map, vector digital data
Preliminary Interpretive Report
PIR 2012-1A
Fairbanks, AK, USA
Alaska Division of Geological & Geophysical Surveys
27 p., 2 sheets, scale 1:63,360
http://dx.doi.org/10.14509/23443
During 2009, the Alaska Division of Geological & Geophysical Surveys continued a program, begun in 2006, of reconnaissance mapping of surficial geology in the proposed natural-gas pipeline corridor through the upper Tanana River valley. The study area is a 12-mi-wide (19.3-km-wide) area that straddles the Alaska Highway from the western boundaries of the Tanacross B-3 and A-3 quadrangles near Tetlin Junction eastward to the eastern boundaries of the Nabesna D-1 and C-1 quadrangles along the Canada border. Mapping during 2008-2009 in the Tanacross and Nabesna quadrangles linked with the mapping completed in the Tanacross, Big Delta and Mt. Hayes quadrangles in 2006-2008. Surficial geology was initially mapped in this third corridor segment by interpreting ~1:65,000-scale, false-color, infrared aerial photographs taken in July 1978 and August 1981 and plotting unit boundaries on acetate overlays. Verification of photo mapping was accomplished during the 2008 and 2009 summer field seasons, when map units were described, soil pits were hand dug, and samples were collected for analyses.
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.
Unit information and descriptions are included on each map sheet. The DGGS metadata standard extends the FGDC standard to include elements that are required to facilitate our internal data management. These elements, referred to as "layers," group and describe files that have intrinsic logical or topological relationships. Attribute information for the layers (entity) is included in this metadata file under the "Entity_and_Attribute_Information" section. The layers are titled:
>surf-geology: polygons of surficial-geologic map units
>border: outline shape of the study area
>localities: location of soil pits, radiocarbon samples, fossil localities, soil moisture localities, tephra locality, and ventifact site discussed in text
1978
1981
2008
2009
2010
2011
2012
ground condition
Unknown
-142.5
-141
63.378
62.529
ISO 19115 Topic Category
geoscientificInformation
Alaska Division of Geological & Geophysical Surveys
Dunes
Eolian
Geologic Hazards
Geologic Map
Geologic Materials
Geological Process
Geology
Geomorphology
Proposed Natural Gas Pipeline
Remote Sensing
Surficial Geology
Surficial
Transportation Corridor
Unconsolidated Deposits
Alaska Division of Geological & Geophysical Surveys
Alaska Highway Corridor
Alaska Range
Alaska, State of
Tanacross
Tanacross Quadrangle
Nabesna
Nabesna Quadrangle
Tetlin Junction
Canada
Midway Lake
Tetlin National Wildlife Refuge
Beaver Creek
Scottie Creek
Tanana River
Nabesna River
Chisana River
Northway
Northway Junction
Alaska Division of Geological & Geophysical Surveys
Delta Glaciation
Donnelly Glaciation
Alaska Division of Geological & Geophysical Surveys
Pleistocene
Quaternary
Holocene
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).
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.
Alaska Division of Geological & Geophysical Surveys
James Weakland
GIS Analyst
mailing and physical
3354 College Road
Fairbanks
AK
99709-3707
USA
(907)451-5029
(907)451-5020
dggsgis@alaska.gov
8 am to 4:30 pm, Monday through Friday, except State holidays
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.
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 10; ESRI ArcGIS 10
Carver, G.A.
Bemis, S.P.
Solie, D.N.
Castonguay, S.R.
Obermiller, K.E.
2010
Active and potentially active faults in or near the Alaska Highway corridor, Dot Lake to Tetlin Junction, Alaska
document
Preliminary Interpretive Report
PIR 2010-1
Fairbanks, AK, USA
State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
42 p.
http://dx.doi.org/10.14509/21121
Carver, G.A.
Bemis, S.P.
Solie, D.N.
Obermiller, K.E.
2008
Active and potentially active faults in or near the Alaska Highway corridor, Delta Junction to Dot Lake, Alaska
document
Preliminary Interpretive Report
PIR 2008-3D
Fairbanks, AK, USA
State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
32 p.
http://dx.doi.org/10.14509/17901
Hubbard, T.D.
Reger, R.D.
2010
Engineering-geologic map of the Alaska Highway corridor, Robertson River to Tetlin Junction, Alaska
Map sheet and vector digital data
Preliminary Interpretive Report
PIR 2009-6B
Fairbanks, AK, USA
State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
4 sheets, scale 1:63,360.
http://dx.doi.org/10.14509/19742
Hubbard, T.D.
Reger, R.D.
201010
Model for Late Wisconsinan Massive Outburst Flooding, Tok River Valley, Northeastern Alaska Range
conference proceedings
Geological Society of America Abstracts with Programs
vol. 42, No. 5
Boulder, CO
Geological Society of America
703 p. Abstract on p. 310
Hubbard, T.D.
Reger, R.D.
Gallagher, P.E.
2011
Using lidar to refine geologic mapping and interpretations in the upper Tanana River valley, central Alaska
conference proceedings
Geological Society of America Abstracts with Programs
v. 43, no. 5
Boulder, CO
Geological Society of America
p. 623
Koehler, R.D.
Carver, G.A.
2012
Active and potentially active faults along the Alaska Highway corridor, Tetlin Junction to the Canada border
document
Preliminary Interpretive Report
PIR 2012-2
Fairbanks, AK, USA
Alaska Division of Geological & Geophysical Surveys
23 p
http://dx.doi.org/10.14509/23923
Reger, R.D.
Hubbard, T.D.
2009
Evidence for late Wisconsinan outburst floods in the Tok-Tanacross Basin. upper Tanana River Valley, east-central Alaska
conference proceedings
Geological Society of America Abstracts with Programs
V. 41, No. 7
Boulder, CO
Geological Society of America
p. 637
Reger, R.D.
Hubbard, T.D.
2010
Reconnaissance interpretation of 1978-1983 permafrost, Alaska Highway corridor, Robertson River to Tetlin Junction, Alaska
Document, map sheet and vector digital data
Preliminary Interpretive Report
PIR 2009-6C
Fairbanks, AK, USA
State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
13 p., 4 sheets, scale 1:63,360.
http://dx.doi.org/10.14509/19743
Reger, R.D.
Hubbard, T.D.
Carver, G.A.
2011
Surficial geology of Alaska Highway corridor, Robertson River to Tetlin Junction, Alaska
document, map sheet and vector digital data
Preliminary Interpretive Report
PIR 2009-6A
Fairbanks, AK, USA
State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
53 p., 4 sheets, scale 1:63,360.
http://dx.doi.org/10.14509/19741
Reger, R.D.
Hubbard, T.D.
Gallagher, P.E.
2012
Reconnaissance interpretation of 1978-1981 permafrost, Alaska Highway corridor, Tetlin Junction to Canada border, Alaska
Document, map sheet and vector digital data
Preliminary Interpretive Report
PIR 2012-1C
Fairbanks, AK, USA
State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
27 p., 2 sheets, scale 1:63,360.
http://dx.doi.org/10.14509/23444
Reger, R.D.
Hubbard, T.D.
Gallagher, P.E.
Unknown
Engineering geology map, Alaska Highway corridor, Tetlin Junction to Canada border, Alaska
Document, map sheet and vector digital data
Preliminary Interpretive Report
PIR 2012-1B
Fairbanks, AK, USA
State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
2 sheets, scale 1:63,360. Report included. IN PRESS
Reger, R.D.
Solie, D.N.
2008
Engineering-geologic map, Alaska Highway corridor, Delta Junction to Dot Lake, Alaska
map sheet and vector digital data
Preliminary Interpretive Report
PIR 2008-3B
Fairbanks, AK, USA
State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
2 sheets, scale 1:63,360.
http://dx.doi.org/10.14509/17981
Reger, R.D.
Solie, D.N.
2008
Reconnaissance interpretation of permafrost, Alaska Highway corridor, Delta Junction to Dot Lake, Alaska
Document, map sheet and vector digital data
Preliminary Interpretive Report
PIR 2008-3C
Fairbanks, AK, USA
State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
10 p., 2 sheets, scale 1:63,360.
http://dx.doi.org/10.14509/17621
Reger, R.D.
Stevens, D.S.P.
Solie, D.N.
2008
Surficial-geologic map, Delta Junction to Dot Lake, Alaska Highway corridor
document, map
Preliminary Interpretive Report
PIR 2008-3A
Fairbanks, AK, USA
Alaska Division of Geological & Geophysical Surveys
48 p., 2 sheets, scale 1:63,360
http://dx.doi.org/10.14509/17961
Reger, R.D.
Stevens, D.S.P
Solie, D.N.
2008
Evidence of multiple outburst floods, upper Tanana River valley, east-central Alaska
conference proceedings
Geological Society of America Abstracts with Programs
v. 40, no. 1
Boulder, CO
Geological Society of America
p. 36.
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.
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.
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.
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.
U.S. Geological Survey
1972
Tanacross A-1 Quadrangle
map
Washington D.C.
U.S. Geological Survey
1 Sheet
63360
USGS topo map
1952
1971
ground condition
USGS Tanacross A-1, 1952- minor revisions 1971
base map
U.S. Geological Survey
1974
Tanacross A-2 Quadrangle
map
Washington D.C.
U.S. Geological Survey
1 sheet
63360
USGS topo map
1955
1972
ground condition
USGS Tanacross A-2, 1955- minor revisions 1972
base map
U.S. Geological Survey
2000
Tanacross A-3 Quadrangle
map
Washington D.C.
U.S. Geological Survey
1 sheet
63360
USGS topo map
1948
2000
ground condition
USGS Tanacross A-3, 1948- minor revisions 2000
base map
U.S. Geological Survey
1967
Tanacross B-3 Quadrangle
map
Washington D.C.
U.S. Geological Survey
1 sheet
63360
USGS topo map
1949
1964
ground condition
USGS Tanacross B-3, 1949- minor revisions 1964
base map
U.S. Geological Survey
1963
Nabesna C-1 Quadrangle
map
Washington D.C.
U.S. Geological Survey
1 sheet
63360
USGS topo map
1955
1963
ground condition
USGS Nabesna C-1, 1955- minor revisions 1963
base map
U.S. Geological Survey
1967
Nabesna D-1 Quadrangle
map
Washington D.C
U.S. Geological Survey
1 sheet
63360
USGS topo map
1952
1967
ground condition
USGS Nabesna D-1, 1952- minor revisions 1967
base map
U.S. Geological Survey
1978
Nabesna D-2 Quadrangle
map
Reston, VA
U.S. Geological Survey
1 sheet
63360
USGS topo map
1955
1978
ground condition
USGS Nabesna D-2, 1955- minor revisions 1978
base map
U.S. Geological Survey
2000
Nabesna D-3 Quadrangle
map
Reston, VA
U.S. Geological Survey
1 sheet
63360
USGS topo map
1955
2000
ground condition
USGS Nabesna D-3, 1955- minor revisions 2000
base map
Carter, L.D.
Galloway, J.P.
1978
Preliminary engineering geologic maps of the proposed natural gas pipeline route in the Tanana River valley, Alaska
document
Open-file report
OF 78-794
United States
U.S. Geological Survey
26 p., 3 map sheets, scale 1:125,000
paper
1978
ground condition
Carter and Galloway, 1978
Engineering geologic maps at 1:125,000
Duk-Rodkin, Alejandra
Barendregt, R.W.
Froese, D.G.
Weber, Florence
Enkin, Randy
Smith, I.R.
Waters, Pamela
Klassen, Rudy
2004
Timing and extent of Plio-Pleistocene glaciations in northwestern Canada
book chapter
Development in Quaternary Science
v.2
New York
Elsevier
p. 313-345
Ehlers, J.
Gibbard, P.L.
2004
Quaternary glaciations-extent and chronology, part II: North America
book chapter
Development in Quaternary Science
v. 2
New York
Elsevier
p. 313-345
paper
2004
ground condition
Duk-Rodkin and others, 2004
Information about timing of glaciation in Canada and Alaska
Easton, N.A.
Yesner, D.R.
Hutchinson, Vance
Schnurr, Peter
Baker, Christopher
2009
Wisconsin-interstadial(?), terminal-Pleistocene, and early Holocene radiocarbon dates from the Little John site, southwest Yukon Territory, Canada
journal article
Current Research in the Pleistocene
v. 26
p. 47-50
paper
2009
ground condition
Easton and others, 2009
Information about radiocarbon dates in northern Canada
Fernald, A.T.
1965
Glaciation in the Nabesna River area, upper Tanana River valley, Alaska
chapter
U.S. Geological Survey Professional Paper
525-C
p. 120-123.
U.S. Geological Survey
1965
Geological survey research 1965, Chapter C
report
paper
1965
ground condition
Fernald, 1965a
Information about Glaciation in the Nabesna River and upper Tanana River valley
Fernald, A.T
1965
Recent history of the upper Tanana River Lowland, Alaska
Chapter
U.S. Geological Survey Professional Paper
525-C
p. 124-127
U.S. Geological Survey
1965
Geological survey research 1965, Chapter C
report
paper
1965
ground condition
Fernald, 1965b
Information about history of upper Tanana River lowland
Foster, H.L.
1970
Reconnaissance geologic map of the Tanacross Quadrangle, Alaska
map
U.S. Geological Survey Miscellaneous Geologic Investigations Map
I-593
united states
U.S. Geological Survey
1 sheet
250000
paper
1970
ground condition
Foster, 1970
Contains geologic information about the Tanacross Quadrangle
Hamilton, T.D.
1994
Late Cenozoic glaciation of Alaska
book chapter
Geology of North America
v. G-1
United States
Geological Society of America
p. 813-844
Plafker, George
Berg, H.C.
1994
The Geology of Alaska
book chapter
Geology of North America
v. G-1
United States
Geological Society of America
p. 813-844
paper
1994
ground condition
Hamilton, 1994
Late Cenozoic glaciation of Alaska
Kreig, R.A.
Reger, R.D.
1976
Preconstruction terrain evaluation for the trans-Alaska pipeline project
book chapter
Stroudsburg
Dowden, Hutchinson, and Ross
p. 55-76
Coates, D.R.
2011
Geomorphology and engineering
document
paper
1976
ground condition
Kreig and Reger, 1976
Contains terrain evaluation for trans-Alaska oil pipeline
Kreig, R.A.
Reger, R.D.
1982
Air-photo analysis and summary of land-form soil properties along the route of the Trans-Alaska Pipeline System
document
Geologic Report
GR-66
Fairbanks AK
Alaska Division of Geological & Geophysical Surveys
149 p.
paper
1982
ground condition
Kreig and Reger, 1982
Contains air-photo analysis and land form soil properties for trans-Alaska oil pipeline
Lea, P.D.
Waythomas, C.F.
1990
Late-Pleistocene eolian sand sheets in Alaska
journal article
Quaternary Research
v. 34, no. 3
p. 260-281
paper
1990
ground condition
Lea and Waythomas, 1990
Information about sand sheets in Alaska
Pewe, T.L.
1975
Quaternary geology of Alaska
document
Professional Paper
P 835
United States
U.S. Geological Survey
145 p.
paper
1975
ground condition
Pewe, 1975
Quaternary geology of Alaska
Pewe, T.L.
Reger, R.D.
1983
Middle Tanana River valley
book chapter
Guidebook
Guidebook 1
Fairbanks AK
Alaska Division of Geological & Geophysical Surveys
in Pewe, T.L., and Reger, R.D., eds., Guidebook to permafrost and Quaternary geology along the Richardson and Glenn Highways between Fairbanks and Anchorage, Alaska, p. 5-45
Pewe, T.L., ed.
Reger, R.D., ed.
1983
Guidebook to permafrost and Quaternary geology along the Richardson and Glenn Highways between Fairbanks and Anchorage, Alaska
document
Guidebook
Guidebook 1
Fairbanks AK
Alaska Division of Geological & Geophysical Surveys
paper
1983
ground condition
Pewe and Reger, 1983
Contains information about Quaternary geology of Tanana Valley
Richter, D.H.
1976
Geologic map of the Nabesna Quadrangle, Alaska
map
U.S. Geological Survey Miscellaneous Investigations Map
I-932
1 plate, scale 1:250,000
paper
1976
ground condition
Richter, 1976
Geologic map of the Nabesna Quadrangle
Wahrhaftig, Clyde
1965
Physiographic divisions of Alaska
maps
52 p., 6 sheets, various scales
paper
1965
observed
Wahrhaftig, 1965
Maps showing physiographic divisions of Alaska
Wallace, R.E.
1948
Cave-in lakes in the Nabesna, Chisana, and Tanana River valleys, eastern Alaska
journal article
Journal of Geology
v. 56, no. 3
p. 171-181
paper
1948
ground condition
Wallace, 1948
Information about cave-in lakes in the Nabesna, Chisanan, and Tanana River valleys.
Weber, F.R.
1986
Glacial geology of the Yukon-Tanana Upland
book chapter
Anchorage, Alaska
Alaska Geological Society
p. 79-98.
Hamilton, T.D., ed.
Reed, K.M., ed.
Thorson, R.M., ed.
1986
Glaciation in Alaska; The geologic record
book chapter
Anchorage, Alaska
Alaska Geological Society
p. 79-98.
paper
1986
ground condition
Weber, 1986
Glacial geology of the Yukon-Tanana Upland
U.S. Geological Survey
Unknown
Alaska High Altitude Photography Program
prints and digital files
Unknown
U.S. Geological Survey
65000
photographic print
1981
1978
ground condition
AHAP Aerial Photography, 1978 and 1981
Aerial photography used in map unit interpretation
Aerial photograph interpretation - Stereo pairs of ~1:65000-scale, false-color infrared aerial photographs taken in July 1978 and August 1981, as well as data from published and unpublished mapping of the target region and adjacent regions, were used to initially interpret and map the surficial geology. Unit boundaries were drawn by hand onto acetate overlays, using a magnifying stereoscope. Overlays were registered to aerial photos using tick marks on the photos.
AHAP Aerial Photography, 1978 and 1981
Carter and Galloway, 1978
Foster, 1970
Kreig and Reger, 1976
Kreig and Reger, 1982
Pewe and Reger, 1983
2009
Digital cartography - The acetate overlays were individually scanned and orthorectified, using Orthomapper, v. 3.6, and georeferenced. The air-photos were orthorectified, photomosaiced and georeferenced. Map 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 orthophotomosaic layer to verify the position of the lines. Surficial geology map polygons and lines were then edited and attributed using ArcMap 9+
USGS Tanacross A-1, 1952 - minor revisions 1971
USGS Tanacross A-2, 1955 - minor revisions 1972
USGS Tanacross A-3, 1948 - minor revisions 1978
USGS Tanacross B-3, 1949 - minor revisions 1964
USGS Nabesna C-1, 1955 - minor revisions 1963
USGS Nabesna D-1, 1952 - minor revisions 1967
USGS Nabesna D-2, 1955 - minor revisions 1978
USGS Nabesna D-3, 1955 - minor revisions 2000
2009
Fieldwork - Reconnaissance field work was done in the summer of 2008 during which observations were recorded for use during aerial photograph interpretation. In July-August 2009, field work to verify aerial photograph interpretations was performed. In addition to observations from ground and helicopter traverses, several soil pits were dug using shovels to maximum depth of 1.3 meters to observe soil profiles, and observations of exposures along river banks, highway cuts, and trenches dug as part of active fault studies were recorded.
Carter and Galloway, 1978
Duk-Rodkin and others, 2004
Easton and others, 2009
Foster, 1970
Fernald, 1965a
Fernald, 1965b
Hamilton, 1994
Kreig and Reger, 1982
Lea and Waythomas, 1990
Pewe, 1975
Pewe and Reger, 1983
Richter, 1976
Wahrhaftig, 1965
Wallace, 1948
Weber, 1986
2009
Map compilation - The surficial geologic map was compiled using field notes from fieldwork process step (above), all known geologic data from previous work in the general region, and additional aerial photograph interpretation. Changes to unit boundaries, after field work, were completed in ArcGIS 9 and ArcGIS 10. The final map layout was created using ArcGIS 10.
2012
Radiocarbon data - radiocarbon samples were collected during field work in the summer of 2009 by Dick Reger and Trent Hubbard. Samples were sent to Beta Analytic for analysis in late 2009.
2009
Metadata creation - Metadata were assembled by P.E. Gallagher to FGDC Standards using Metavist 1.2, DGGS 7.05, a data entry program for FGDC metadata with XML output.
2012
Vector
Universal Transverse Mercator
7
0.999600
-141
0
500000.000000
0
coordinate pair
0.000001
0.000001
meters
surf-geology
Universal Transverse Mercator
7
0.999600
-141
0
500000.000000
0
coordinate pair
0.000001
0.000001
meters
border
Universal Transverse Mercator
7
0.999600
-141
0
500000.000000
0
coordinate pair
0.000001
0.000001
meters
localities
North American Datum of 1927
Clarke 1866
6378206.4
294.9786982
pir2012-1a-surf-geology
Surficial map unit polygons. Boundaries of surficial unit polygons are inferred. Also includes lake polygons.
Alaska Division of Geological & Geophysical Surveys
surf-geology
map_unit
Surficial map unit label shown on map and described in text. Note that "?" indicates questionable identification.
Alaska Division of Geological & Geophysical Surveys
PIR2012-1A, Description of Surficial-Geologic Map Units
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
lake
Polygon unit is a lake
This report
pir2012-1a-border
polygon outlining boundary of map area
Alaska Division of Geological & Geophysical Surveys
border
pir2012-1a-localities
Points identifying field localities discussed in this report (PIR 2012-1A)
Alaska Division of Geological & Geophysical Surveys
localities
Label
Label used to identify field localities
Alaska Division of Geological & Geophysical Surveys
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
Type
Type of locality
Alaska Division of Geological & Geophysical Surveys
Fossil locality
Fossil localities discussed in text
This report
Soil moisture locality
Soil moisture localities discussed in text
This report
Radiocarbon locality
Radiocarbon localities discussed in text
This report
Soil pit
Soil pits discussed in text
This report
Tephra locality
Tephra locality discussed in text
This report
Ventifact site
Ventifact sites discussed in text
This report
Alaska Division of Geological & Geophysical Surveys
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PIR 2012-1A
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SHP
http://dx.doi.org/10.14509/23443
Free download
20120717
Metadata manager
mailing and physical
3354 College Road
Fairbanks
AK
99709-3707
USA
(907)451-5020
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
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.
http://www.dggs.alaska.gov/metadata/dggs.ext
dggs metadata extensions