bedrock_arc geologic unit contacts bedrock_poly geologic unit polygons kc_chrt_point point locations of Buchia limestone coquina and Imnaitchiak Chert boulders motion_point symbols showing relative motion and/or orientation of structural elements qal_af_poly polygons indicating location of aufeis strike_dip_point point locations of bedding and foliation orientation data structure_arc line symbols depicting the location of traceable beds, faults, and axial traces of folds
Harris, E.E., Mull, C.G., Reifenstuhl, R.R., and Montayne, Simone, 2002, Geologic map of the Dalton Highway (Atigun Gorge to Slope Mountain) area, southern Arctic Foothills, Alaska: Preliminary Investigative Report PIR 2002-2, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (DGGS), Fairbanks, AK, USA.Online Links:
Planar coordinates are encoded using coordinate pair
Abscissae (x-coordinates) are specified to the nearest 0.000064
Ordinates (y-coordinates) are specified to the nearest 0.000064
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 6,378,206.4.
The flattening of the ellipsoid used is 1/294.98.
| Value | Definition |
|---|---|
| 0 | geologic unit contact location certain |
| 5 | geologic unit contact location certain |
| 1 | geologic unit contact location approximate |
| 2 | geologic unit contact location concealed |
| Formal codeset | |
|---|---|
| Codeset Name: | PIR2002-2_codeset.pdf |
| Codeset Source: | Alaska Division of Geological & Geophysical Surveys <http://www.dggs.dnr.state.ak.us/metadata/PIR2002-2_codeset.pdf> |
| Value | Definition |
|---|---|
| JlPi | Imnaitchiak Chert boulders |
| Kc | Buchia limestone coquina |
| Value | Definition |
|---|---|
| 0 | anticline symbol |
| 1 | plunge symbol |
| 2 | strike slip fault |
| 3 | marks where the fault trace can no longer be mapped |
| 4 | syncline symbol |
| 5 | Location of a numeric symbol indicating angle of plunge measured or estimated downward from horizontal |
| 6 | overturned fault symbol |
| 7 | overturned anticline symbol |
| 8 | symbol indicating that the northern side of a fault is down-thrown |
| 9 | symbol indicating that the southwestern side of a fault is down-thrown |
| Range of values | |
|---|---|
| Minimum: | 0 |
| Maximum: | 360 |
| Units: | degrees |
| Range of values | |
|---|---|
| Minimum: | 0 |
| Maximum: | 90 |
| Units: | degrees |
| Value | Definition |
|---|---|
| 0 | bedding plane strike and dip |
| 2 | approximated bedding plane strike and dip |
| 3 | cleavage strike and dip |
| 4 | bedding plane strike and dip lineation plunge measurement |
| 5 | strike and dip of overturned beds |
| 6 | strike and dip of bed overturned 240 degrees |
| 7 | vertical beds |
| 8 | overturned thrust fault |
| 9 | multiple minor folds showing trace of axial plane and direction of plunge |
| Range of values | |
|---|---|
| Minimum: | 0 |
| Maximum: | 90 |
| Units: | degrees |
unique number "999" that indicates a null value for this field
| Range of values | |
|---|---|
| Minimum: | 0 |
| Maximum: | 90 |
| Units: | degrees |
| Range of values | |
|---|---|
| Minimum: | 0 |
| Maximum: | 360 |
| Units: | degrees |
| Value | Definition |
|---|---|
| 0 | traceable bed |
| 2 | fold axis |
| 3 | fault, inferred |
| 4 | concealed fault, location uncertain |
| 5 | inferred fault, location uncertain |
| 6 | thrust fault, user will need to see paper publication for interpretation of relative plate motion |
| 7 | inferred thrust fault, user will need to see paper publication for interpretation of relative plate motion |
| 8 | inferred major thrust fault bounding structural provinces, user will need to see paper publication for interpretation of relative plate motion |
| 9 | fold, approximately located |
| 10 | fault, concealed |
| 11 | fault, certain |
| 12 | inferred thrust fault, location uncertain, user will need to see paper publication for interpretation of relative plate motion |
| 13 | major fault bounding structural provinces, concealed |
| 14 | major fault bounding structural provinces |
Funding for the geologic mapping and geochronologic dating performed for this project was provided by the U.S. Geological Survey STATEMAP Program under award number 03HQAG0055 and by the Alaska State Legislature. Geologic field investigations by: C.G. Mull1 (1984-1987, 1989-1994 1999-2001); E.E. Harris (1984-1985, 1992, 1999-2001); R.R Reifenstuhl1 (1991-1992, 1994, 2000-2001); R.K. Glenn (1989); K.E. Adams (1984-1985); D.A. Bodnar (1983); J.P. Siok (1983); D.L. LePain (2001); M.A. Wartes (2001); T.J. Ryherd (1989, 1992, 2001); R.K. Crowder (1984); Paige R. Peapples (2001); R.A. Kirkham (1999-2001); Simone Montayne (2001); M.B. Mickey5 (2000); and M.T. Whalen (2001); R.B. Blodgett(2001); Art Banet (2000); Landon Kelly (2001). Technical review by: J.G. Clough. Digital cartography by: Simone Montayne. Edited by: Paula K. Davis
(907) 451-5029 (voice)
(907) 451-5050 (FAX)
dggspubs@alaska.gov
The geologic map of the of the Dalton Highway area from Atigun Gorge to Slope Mountain is one of a series of geologic maps selected by the Alaska Division of Geological & Geophysical Surveys (DGGS) for detailed mapping (1:63,360-scale) to document important stratigraphic and structural relationships at the Brooks Range mountain front and in the adjacent northern foothills. New detailed geologic mapping of the quadrangle will provide stratigraphic control to document the transition from units in NPRA to units in ANWR and help correlate rocks in these areas to the Prudhoe Bay oilfield.
Brosgé, W.P., Reiser, H.N., Dutro Jr., J.T., and Detterman, R.L., 1979, Bedrock geologic map of the Philip Smith Mountains quadrangle, Alaska: Miscellaneous Field Studies Map MF 879-B, U.S. Geological Survey, Reston, VA, USA.
Glenn, R.K., unpublished material, Range-front structure and lithostratigraphy of the Atigun Gorge area, north-central Brooks Range, Alaska, Unpublished Master's Thesis.
Hamilton, T.D., 2003, Surficial geology of the Dalton Highway (Itkillik-Sagavanirktok Rivers) area, southern Arctic Foothills, Alaska: Professional Report PR 121, Alaska Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Mull, C.G., Harris, E.E., and Peapples, Paige, unpublished material, Geology of the Cobblestone Creek-May Creek area, central Brooks Range foothills, Alaska: Report of Investigation in press.Online Links:
- none
Mull, C.G., Houseknecht, D.W., and Bird, K.J., 2003, Revised Cretaceous and Tertiary stratigraphic nomenclature in the east-central Colville basin, northern Alaska: Professional Paper 1673, U.S. Geological Survey, Reston, VA USA.
Mull, C.G., Moore, T.E., Harris, E.E., and Tailleur, I.L., 1994, Geologic map of the Killik River quadrangle, Brooks Range, Alaska: Open File Report OF 94-679, U.S. Geological Survey, Washington, DC, USA.
Reifenstuhl, R.R., Mull, C.G., Pessel, G.H., and Myers, M.D., 1993, Preliminary bedrock geologic map of the Philip Smith Mountains C-4 Quadrangle, northeastern Brooks Range, Alaska: Public Data File PDF 93-30C, Alaska Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
USGS, 1971, Philip Smith Mountains (B-4), Alaska: U.S. Geological Survey, Reston, VA, USA.
USGS, 1971, Philip Smith Mountains (C-4), Alaska: U. S. Geological Survey, Reston, VA, USA.
USGS, 1971, Philip Smith Mountains (D-4), Alaska: U.S. Geological Survey, Reston, VA, USA.
USGS, 1971, Philip Smith Mountains (B-5), Alaska: U.S. Geological Survey, Reston, VA, USA.
USGS, 1971, Philip Smith Mountains (C-5), Alaska: U.S. Geological Survey, Reston, VA, USA.
USGS, 1971, Philip Smith Mountains (D-5), Alaska: U.S. Geological Survey, Reston, VA, USA.
Adams, K.E., unpublished material, Permian sedimentation in the north-central Brooks Range, Alaska: Implications for tectonic reconstructions.
Adams, K.E., Mull, C.G., and Crowder, R.K., 19970910, Permian deposition in the north central Brooks Range, Alaska: Constraints for tectonic reconstructions: Journal of Geophysical Research v. 102, n. B9, American Geophysical Union, Washington, D.C, USA.
Ahlbrandt, T.S., Huffman Jr., A.C., Fox, J.E., and Pasternack, Ira, 1979, Depositional framework and reservoir quality studies of selected Nanushuk Group outcrops, North Slope, Alaska:.This is part of the following larger work.
Ahlbrandt, T.S. (ed.), 1979, Preliminary geologic, petrologic, and paleontologic results of the study of Nanushuk Group rocks, North Slope, Alaska: Circular 794, U.S. Geological Survey, Reston, VA, USA.
Bartsch-Winkler, Susan, 1985, Petrography of sandstones of the Nanushuk Group from four measured sections, central Brooks Range, Alaska:.This is part of the following larger work.
Huffman Jr., A.C. (ed.), 1985, Geology of the Nanushuk Group and related rocks, North Slope, Alaska: Bulletin 1614, U.S. Geological Survey, Reston, VA, USA.
Bird, K.J., and Molenaar, K.M., 1992, The North Slope Foreland Basin, Alaska:.This is part of the following larger work.
Macqueen, R.W. (ed.), and Leckie, D.A. (ed.), 1992, Foreland Basins and Fold Belts: American Association of Petroleum Geologists Memoir 55.
Bodnar, D.A., 1989, Stratigraphy of the Otuk Formation and a Cretaceous coquinoid and shale unit, north-central Brooks Range:.This is part of the following larger work.
Mull, C.G. (ed.), and Adams, K.E. (ed.), 1989, Bedrock geology of the eastern Koyukuk Basin, central Brooks Range, and eastcentral Arctic Slope along the Dalton Highway, Yukon River to Prudhoe Bay, Alaska: Guide Book GB 7 v. 2.Online Links:
Bodnar, D.A., unpublished material, Stratigraphy, age, depositional environments, and hydrocarbon source rock evaluation of the Otuk Formation, north-central Brooks Range, Alaska.
Brosgé, W.P., and Moore, T.H., 1988, Geology of the Upper Devonian and Lower Mississippian(?) Kanayut Conglomerate in the central and eastern Brooks Range, Alaska:.This is part of the following larger work.
Gryc, George (ed.), 1988, Geology and exploration of the National Petroleum Reserve in Alaska: Professional Paper 1399.
Cole, Frances, Bird, K.J., Toro, J., Roure, F., O'Sullivan, P.B., Pawlewicz, M., and Howell, D.G., 1997, An integrated model for the tectonic development of the frontal Brooks Range and Colville basin 250 km west of the Trans-Alaska Crustal Transect: Journal of Geophysical Research v. 102, n.B9, American Geophysical Union, Washington, D.C., USA.
Crowder, R.K., 1987, Cretaceous basin to shelf transition in northern Alaska: deposition of the Fortress Mountain Formation:.This is part of the following larger work.
Tailleur, I.L. (ed.), and Weimer, Paul (ed.), 1987, Alaskan North Slope Geology: Society of Economic Paleontologists and Mineralogists, Pacific Section, and Alaska Geological Society v. 1.
Crowder, R.K., 1989, Deposition of the Fortress Mountain Formation:.This is part of the following larger work.
Mull, C.G. (ed.), and Adams, K.E. (ed.), 1989, Dalton Highway, Yukon River to Prudhoe Bay, Alaska: Bedrock Geology of the eastern Koyukuk basin, central Brooks Range, and east-central Arctic Slope: Alaska: Guide Book GB 7 v. 2.Online Links:
Detterman, R.L., 1956, New and refined nomenclature of Nanushuk Group: American Association of Petroleum Geologists Bulletin v. 40, n. 2.
Dumoulin, J.A., Watts, K.F., and Harris, A.G., 1997, Stratigraphic contrasts and tectonic relationships between Carboniferous successions in the Trans-Alaska Crustal Transect corridor and adjacent areas, northern Alaska: Journal of Geophysical Research v. 102, n. B9, American Geophysical Union, Washington, D.C., USA.
Gryc, George, Patton Jr., W.W., and Payne, T.G., 1951, Present Cretaceous stratigraphic nomenclature of northern Alaska: Journal of Washington Academy of Sciences v. 41.
Huffman Jr., A.C., Ahlbrandt, T.S., Pasternack, Ira, Strickler, G.D., and Fox, J.E., 1985, Depositional and sedimentologic factors affecting the reservoir potential of the Cretaceous Nanushuk Group, central North Slope, Alaska:.This is part of the following larger work.
Huffman Jr., A.C. (ed.), 1985, Geology of the Nanushuk Group and related rocks, North Slope, Alaska: Bulletin 1614, U.S. Geological Survey, Reston, VA, USA.
LePain, D.L., Kirkham, R., and McCarthy, P.J., 2002, Shoreline to basin transition (?) in Albian-Cenomanian strata east of the Sagavanirktok River, Brooks Range Foothills, Alaska, Northern Alaska: Energy Frontiers - A 2002 Perspective: Program and Abstracts, American Association of Petroleum Geologists and Society of Petroleum Engineers none.
Molenaar, C.M., 1985, Subsurface correlations and depositional history of the Nanushuk Group and related strata, North Slope, Alaska:.This is part of the following larger work.
Huffman Jr., A.C. (ed.), 1985, Geology of the Nanushuk Group and related rocks, North Slope, Alaska: Bulletin 1614, U.S. Geological Survey, Reston, VA, USA.
Molenaar, C.M., Egbert, R.M., and Krystinik, L.F., 1981, Depositional facies, petrography, and reservoir potential of the Fortress Mountain Formation (Lower Cretaceous), central North Slope, Alaska: Open File Report 81-967, U.S. Geological Survey, Reston, VA, USA.
Moore, T.E., Nilsen, T.H., and Brosgé, W.P., 1989, Sedimentology of the Kanayut Conglomerate:.This is part of the following larger work.
Mull, C.G. (ed.), and Adams, K.E. (ed.), 1989, Dalton Highway, Yukon River to Prudhoe Bay, Alaska: Bedrock Geology of the eastern Koyukuk basin, central Brooks Range, and east-central Arctic Slope: Alaska: Guide Book GB 7 v. 2.Online Links:
Moore, T.E., Wallace, W.K., Mull, C.G., Adams, K.E., Plafker, George, and Nokleberg, W.J., 1997, Crustal implications of bedrock geology along the Trans-Alaska Crustal Transect (TACT) in the Brooks Range, northern Alaska: Journal of Geophysical Research v. 102, n. B9, American Geophysical Union, Washington, D.C., USA.
Moore, T.E., Wallace, W.K., Bird, K.J., Karl, S.M., Mull, C.G., and Dillon, J.T., 1994, Geology of Northern Alaska:.This is part of the following larger work.
Plafker, George (ed.), and ed., H.C. Berg , 1994, The Geology of Alaska: The Geology of North America: Geological Society of America v. G-1.
Mull, C.G., 1985, Cretaceous tectonics, depositional cycles, and the Nanushuk Group, Brooks Range and the Arctic Slope, Alaska:.This is part of the following larger work.
Huffman Jr., A.C. (ed.), 1985, Geology of the Nanushuk Group and related rocks, North Slope, Alaska: Bulletin 1614, U.S. Geological Survey, Reston, VA, USA.
Mull, C.G., 1989, Generalized stratigraphy and structure of the Brooks Range and Arctic Slope:.This is part of the following larger work.
Mull, C.G. (ed.), and Adams, K.E. (ed.), 1989, Dalton Highway, Yukon River to Prudhoe Bay, Alaska: Bedrock Geology of the eastern Koyukuk basin, central Brooks Range, and east-central Arctic Slope: Alaska: Guide Book GB 7 v. 2.Online Links:
Mull, C.G., Crowder, R.K., Adams, K.E., Siok, J.P., Bodnar, D.A., Harris, E.E., Alexander, R.A., and Solie, D.N., 1987, Stratigraphy and structural setting of the Picnic Creek allochthon, Killik River quadrangle, central Brooks Range, Alaska: A summary:.This is part of the following larger work.
Tailleur, I.L. (ed.), and Weimer, Paul (ed.), 1987, Alaskan North Slope Geology: Society of Economic Paleontologists and Mineralogists, Pacific Section, and Alaska Geological Society v. 2.
Mull, C.G., Glenn, R.K., and Adams, K.E., 1997, Tectonic evolution of the central Brooks Range mountain front: Evidence from the Atigun Gorge region: Journal of Geophysical Research v. 102, n. B-9, American Geophysical Union, Washington, D.C., USA.
Mull, C.G., and Harris, E.E., 1989, Road log from Chandalar Shelf (Mile 237.1) to Prudhoe Bay (Mile 414):.This is part of the following larger work.
Mull, C.G. (ed.), and Adams, K.E. (ed.), 1989, Dalton Highway, Yukon River to Prudhoe Bay, Alaska: Bedrock Geology of the eastern Koyukuk basin, central Brooks Range, and east-central Arctic Slope: Alaska: Guide Book GB 7 v. 2.Online Links:
Nilsen, T.H., and Moore, T.E., 1984, Stratigraphic nomenclature for the Upper Devonian and Lower Mississippian(?) Kanayut Conglomerate, Brooks Range, Alaska: Bulletin 1529-A, U.S. Geological Survey, Reston, VA, USA.
Sable, E.G., 1956, New and refined Cretaceous formations in western part of northern Alaska: American Association of Petroleum Geologists v. 40, n. 11.
Schenk, C.J., and Bird, K.J., 1993, Depositional sequences in lower Cretaceous rocks, Atigun Syncline and Slope Mountain areas, Alaskan North Slope:.This is part of the following larger work.
Dusel-Bacon, Cynthia (ed.), and Till, A.B. (ed.), 1993, Geologic studies in Alaska by the U.S. Geological Survey, 1992: Bulletin 2068.
Siok, J.P., 1989, Stratigraphy and petrology of the Okpikruak Formation at Cobblestone Creek, northcentral Brooks Range:.This is part of the following larger work.
Mull, C.G. (ed.), and Adams, K.E. (ed.), 1989, Dalton Highway, Yukon River to Prudhoe Bay, Alaska: Bedrock Geology of the eastern Koyukuk basin, central Brooks Range, and east-central Arctic Slope: Alaska: Guide Book GB 7 v. 2.Online Links:
Siok, J.P., 1985, Geologic history of the Siksikpuk Formation on the Endicott Mountains and Picnic Creek allochthons, north-central Brooks Range, Alaska.
Wallace, W.K., Moore, T.E., and Plafker, George, 1997, Multistory duplexes with forward dipping roofs, north central Brooks Range, Alaska: Journal of Geophysical Research v. 102, n. B-9, American Geophysical Union, Washington, D.C., USA.
Wartes, M.A., and Carroll, A.R., 2002, Detailed facies analysis of the Lower Cretaceous Fortress Mountain Formation, Atigun Syncline, Northern Alaska: Energy Frontiers - A 2002 Perspective: Program and Abstracts, American Association of Petroleum Geologists and Society of Petroleum Engineers none.
Wilber, S.C., Siok, J.P., and Mull, C.G., 1987, A comparison of two petrographic suites of the Okpikruak Formation: a point count analysis:.This is part of the following larger work.
Tailleur, I.L. (ed.), and Weimer, Paul (ed.), 1987, Alaskan North Slope Geology: Society of Economic Paleontologists and Mineralogists, Pacific Section, and Alaska Geological Society v. 1.
Data sources used in this process:
Data sources used in this process:
Data sources used in this process:
Hamilton, T.D., 2002, Surficial geology of the Dalton Highway (Itkillik-Sagavanirktok Rivers) area, southern Arctic Foothills, Alaska: Professional Report PR 121, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Geologic data used in the compilation was derived from the field maps and notes generated by this project (2001 and 2002) as well as data from other sources as noted in the "Source_Information" section. Location data for geologic point coverages was acquired from hand held GPS units and compiled on paper field maps and notebooks. A mylar compilation map composed of all geologic information elements was scanned and digitized "on screen" using ArcGIS 8.1. Spatial data attributes were attached to data objects using ArcGIS 8.1. Attributes were verified for consistency and completeness during the creation of the metadata.
DGGS location data and estimated position errors were acquired with hand held GPS units and transferred to field maps and notebooks. Sample numbers and locations of selected data were transferred to a mylar compilation map. The compilation map was scanned and point locations were digitized "on screen" and spatially registered in ArcGIS 8.1. See "Source_Information" section for horizontal positional accuracy of locations not measured by DGGS.
This dataset includes vector data tables that contain information about geologic units, structural features, and structural measurements.
Topology is present on appropriate polygon and line data tables; others are point data tables.
Are there legal restrictions on access or use of the data?
- Access_Constraints:
- This map and data set 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 data sets utilizing these data sets 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. User specifically agrees not to misrepresent these data sets, 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.
907-451-5020 (voice)
907-451-5050 (FAX)
dggspubs@alaska.gov
Preliminary Interpretive Report 2002-2
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 requester or anyone else exceed the fee paid for the electronic service or product.
Current publication is available on paper. 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.
Printed publication can be purchased for $15.00 (contact information below) plus shipping if mailed.
| Data format: | PDF (version 1.6) |
|---|---|
| Network links: |
<http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=2867> |
| Data format: | ArcGIS Shapefile (version ESRI ArcGIS 9.x) |
|---|---|
| Network links: |
<http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=2867> |
| Media you can order: |
CD-ROM
(format Joliet)
|
Digital files on CD-ROM are available for $10.00 (contact information below). No fees charged for downloaded files.
Order by phone (907-451-5020), e-mail (dggspubs@alaska.gov), or fax (907-451-5050). The DGGS web site (<http://www.dggs.dnr.state.ak.us/>) has a list of electronic data available and an order form that can be printed. Payment accepted: Cash, check, money order, VISA, or MasterCard.
Digital downloads: less than 30 minutes for most files. Offline CD/DVD-ROMs: 1-2 weeks unless special arrangements are made and an express fee is paid.
Please check the MapInfo web site (<http://www.mapinfo.com/>) for the latest documentation on importing ESRI shape files.
(907) 451-5036 (voice)
907-451-5050 (FAX)
dggspubs@alaska.gov