Pinney, D.S.
2000
Reconnaissance engineering-geologic map of the Sagavanirktok B-1 Quadrangle, eastern North Slope, Alaska
report, map, vector digital data
Report of Investigation
RI 2000-1D
Fairbanks, AK
State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
2 p., 1 sheet, scale 1:63,360
http://dx.doi.org/10.14509/2678
Alaska Division of Geological & Geophysical Surveys (DGGS) has conducted 1:63,360-scale geologic mapping of the Sagavanirktok B-1 Quadrangle (640 square km—equivalent to four 7.5 minute quadrangles). This mapping project reinterprets micropaleontologic correlations for 17 Sagavanirktok Quadrangle wells, and reprocesses data from the one publicly-available seismic line. Surface geologic mapping, subsurface-to-surface stratigraphic age control, and seismic framework are required to reliably decipher the complex geology of this key area of the Brooks Range. Outcrops within the Sagavanirktok B-1 Quadrangle are the closest surface expressions of Prudhoe Bay source and reservoir rocks. This study yields critical petroleum-related information from these surface exposures, and how they relate to the area subsurface stratigraphy.
At the time this project was published, the State of Alaska depended on the petroleum industry for approximately 80 percent of its revenue, most of which comes from oil fields on the North Slope. North Slope oil production is declining. This mapping project addresses this problem by providing the state and industry with the first published geologic map of this part of the North Slope oil province at a scale other than 1:2,500,000. Detailed geologic mapping of the quadrangle addresses the lack of understanding of the petroleum-geology framework of the eastern North Slope, Colville basin, and the stratigraphic transition from the National Petroleum Reserve in Alaska (NPRA) to the Arctic National Wildlife Refuge (ANWR). This detailed mapping and petroleum-related data is pertinent to oil exploration for Prudhoe Bay satellite fields and new play-type reevaluations, as well as assist private-sector exploration efforts, and speed the exploration process. This data will contribute to increased confidence in exploration and evaluation efforts in areas west of Prudhoe Bay.
The layers listed below are present as ArcGIS shape files. Attribute information for the following layers (entities) is included in this metadata file under the "Entity_and_Attribute_Information" section. Each layer is listed and described in detail under its own heading starting "Entity_Type_Label." Basic unit information is also included in the "Entity_and_Attribute_Information" section. Layers include:
>anwr_arc boundary of the Arctic National Wildlife Refuge
>sagmat_polygon engineering geologic units
1999
2000
publication date
none planned
-147.606990
-147.000000
69.501031
69.248958
ISO 19115 Topic Category
geoscientificInformation
none
Aufeis
Construction Materials
Engineering Geology
Floods
Fluvial
Geologic Hazards
Geologic Map
Icings
Peat
Permafrost
Permeability
Sand & Gravel
Silt
Slumping
Thaw Lakes
none
Arctic National Wildlife Refuge
Brooks Range
North Slope Basin
Shaviovik River
This report, map, and/or dataset are 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. 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.
State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
GIS Data Manager/Cartographer
mailing and physical
3354 College Road
Fairbanks
AK
99709-3707
(907) 451-5029
(907) 451-5020
(907) 451-5050
dggspubs@alaska.gov
You may view our web site at http://www.dggs.alaska.gov for the latest information on available data. Please e-mail your questions and data requests when possible since our web site and e-mail address will remain current even if our phone number and mailing address change.
Funding for the geologic mapping was provided by the U.S. Geological Survey, National Cooperative Geologic Mapping Program, under STATEMAP award number 99HQAG0121 under the NCGM STATEMAP program for FY1999. The views and conclusions contained in this document are those of the authors and should not be interpreted as necessarily representing the official policies, either expressed or implied, of the U.S. Additional Acknowledgments: Map reviewed by R.F. Swenson and M.T. Whalen. Electronic cartography by A.G. Sturmann and B.G. Gage.
Microsoft Windows XP SP2, ArcGIS 9.+, and any text editor.
Reifenstuhl, R.R.
Mull, C.G.
Harris, E.E.
LePain, D.L.
Pinney, D.S.
Wallace, W.K.
2000
Geological map of the Sagavanirktok B-1 Quadrangle, eastern North Slope, Alaska
report, map, vector digital data
Report of Investigation
RI 2000-1A
Fairbanks, AK
State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
15 p., 1 sheet, scale 1:63,360
http://dx.doi.org/10.14509/2675
Reifenstuhl, R.R.
Mull, C.G.
Harris, E.E.
LePain, D.L.
Wallace, W.K.
Pinney, D.S.
2000
Interpretive bedrock geologic map of the Sagavanirktok B-1 Quadrangle, eastern North Slope, Alaska
map
Report of Investigation
RI 2000-1B
Fairbanks, AK
State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
Scale 1:63,360
http://dx.doi.org/10.14509/2676
Pinney, D.S.
2000
Reconnaissance surficial-geologic map of the Sagavanirktok B-1 Quadrangle, eastern North Slope, Alaska
map
Report of Investigation
RI 2000-1C
Fairbanks, AK
State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
Scale 1:63,360
http://dx.doi.org/10.14509/2677
Location data for geologic point coverages were entered manually from GPS units into a spreadsheet. Data for surficial and materials point, line, and polygon coverages were determined in the field using 1:63,360-scale topographic maps and 1:50,000 (nominal) scale, color-infrared aerial photographs. Geologic data included in the compilation are the field maps and notes from this project as well as data from other sources as noted in the "Sources Cited" section. Attributes were verified for consistency and completeness during the creation of the metadata.
Topology is present on appropriate polygon and line coverages; others are point coverages.
This dataset includes coverages that contain information about engineering-geologic units, and field sample locations at 1:63,360 scale.
DGGS location data and estimated position errors were manually entered into a spreadsheet. Sample numbers and locations with selected data were spatially registered and analyzed in ArcGIS software. Location data for the surficial and materials maps were determined visually using topographic maps at a scale of 1:63,360 and 1:50,000 (nominal) scale, color-infrared aerial photographs. See "Source_Information" section for horizontal positional accuracy of locations not measured by DGGS.
100
A value of estimated position error in meters was calculated by the GPS units and recorded for each sample location. This error results from items such as error in satellite positions, mathematical error introduced by the formulas used by the GPS unit for calculating position, and errors caused by narrow satellite alignments. Estimated position error is a value determined by the GPS manufacturer for the calculation and geometric error as a whole. "Selective availability," a deliberate degradation of GPS data managed by the U.S. government that induces an additional error of approximately 100 meters to a GPS location, was in effect until May 1, 2000, and thus during the time of this field work.
110
A value of estimated position error in meters. Engineering geologic map data have a horizontal positional accuracy dependent on: 1) the 1:50,000-scale (nominal) aerial photographs on which it is based, with an estimated potential error due to a pen line width of approximately 0.001 being equivalent to approximately 1.5 meters on the ground; 2) the accuracy of the human zoom transfer scope operator in tracing the line work from acetate overlays to topographic base maps, with an estimated error due to a pen line width of approximately 0.001 being equivalent to approximately 1.5 meters on the ground; 3) the accuracy of the zoom transfer process itself, error magnitude highly variable and unknown but potentially large; 4) the digitizing RMS error of 0.003 inches (input coverage units), which equates to approximately 5 meters on the ground for a 1:63,360-scale map; and 5) the accuracy of the human operator digitizing the geologic from the topographic base maps, with an estimated error due to a pen line width of approximately 0.001 being equivalent to approximately 1.5 meters on the ground. The engineering geologic field maps were digitized using a map tablet and cross-hair mouse. Map error is induced by: (1) transferring map data from base topography to a mylar compilation map, with an estimated potential error due to a pen line width of approximately 0.001 being equivalent to approximately 1.5 meters on the ground; (2) the digitizing RMS error [24 control points on a regular grid have an average RMS error of 10.8 meters on the ground; individual control point error ranges from 4.3 to 21.2 meters on the ground]; and (3) the accuracy of the human operator digitizing the geologic line work from the topographic base map, with an estimated error due to a pen line width of approximately 0.001 being equivalent to approximately 1.5 meters on the ground. Total potential horizontal error for engineering geologic map features is estimated to be approximately 110 meters.
Ashley, G.M.
Hamilton, T.D.
Reed, K.M.
1984
Epiguruk bluff—Chronology and regional correlations
Geological Society of America Abstracts with Programs
v. 16
Boulder, CO, USA
Geological Society of America
p. 267
paper
1984
Publish date
Ashley and others (1984)
These data were used to further define the geology of the Sagavanirktok B-1 area. See this publication cited in the Process Step section below.
Detterman, R.L.
1953
Sagavanirktok–Anaktuvuk region, northern Alaska
Péwé, T.L. (ed.)
Muller, E.H. (ed.)
Karlstrom, T.N.V. (ed.)
Krinsley, D.B. (ed.)
Fernald, A.T. (ed.)
Wahrhaftig, C. (ed.)
Hopkins, D.M. (ed.)
Detterman, R.L. (ed.)
1953
Multiple glaciation in Alaska
Circular
Circ. 289
Washington, DC, USA
U.S. Geological Survey
p. 11-12
paper
1953
publication date
Detterman (1953)
These data were used to further define the surficial geology of the Sagavanirktok B-1 area. See this publication cited in the Process Step section below.
Detterman, R.L.
Bowsher, A.L.
Dutro, J.T., Jr.
1958
Glaciation on the Arctic Slope of the Brooks Range, northern Alaska
paper
Journal of the Arctic Institute of North America
v. 11
Calgary, Alberta, Canada
Arctic
p. 43-61
paper
1958
Publish date
Detterman and others (1958)
These data were used to further define the surficial geology of the Sagavanirktok B-1 area. See this publication cited in the Process Step section below.
Hamilton, T.D.
1986
Late Cenozoic glaciation of the central Brooks Range
Hamilton, T.D. (ed.)
Reed, K.M. (ed.)
Thorson, R.M. (ed.)
1986
Glaciation in Alaska: The geologic record
None
None
Anchorage, AK, USA
Alaska Geological Society
p. 9-49
paper
1986
publication date
Hamilton (1986)
These data were used to further define the surficial geology of the Sagavanirktok B-1 area. See this publication cited in the Process Step section below.
Hamilton, T.D.
1982
A late Pleistocene glacial chronology for the southern Brooks Range—Stratigraphic record and regional significance
paper
Geological Society of America Bulletin
Bulletin 93
Reston, VA, USA
U.S. Geological Survey
p. 700-716
paper
1982
Publish date
Ashley and others (1982)
These data were used to further define the surficial geology of the Sagavanirktok B-1 area. See this publication cited in the Process Step section below.
Porter, S.C.
Pierce, K.L.
Hamilton, T.D.
1983
Late Wisconsin mountain glaciation in the western United States
Porter, S.C.
Wright, H.E., Jr. (ed.)
1983
The Late Pleistocene
Late Quaternary Environments of the United States
v. 1
Minneapolis, MN, USA
University of Minnesota Press
p. 71-111 of 407
paper
1983
publication date
Porter and others (1983)
These data were used to further define the surficial geology of the Sagavanirktok B-1 area. See this publication cited in the Process Step section below.
Waythomas, C.F.
1991
Surficial geologic map of the Sagavanirktok B-1 Quadrangle, northeastern Brooks Range, Alaska
map and vector digital data
Public Data File
PDF 91-21E
Fairbanks, AK, USA
Alaska Division of Geological & Geophysical Surveys
1 sheet, scale 1:63,360, 5 p.
http://dx.doi.org/10.14509/1491
paper
1991
Publish date
Waythomas (1991)
These data were used to further define the surficial geology of the Sagavanirktok B-1 area. See this publication cited in the Process Step section below.
Wagner, A.A.
1957
The use of the Unified Soil Classification System by the Bureau of Reclamation
Proceedings
v. I
London, England
4th International Conference on Soil Mechanics and Foundation Engineering
p. 125
NONE
paper
1957
publication date
Wagner (1957)
These data were used to further define the surficial geology of the Sagavanirktok B-1 area. See this publication cited in the Process Step section below.
Fieldwork - Fieldwork for surficial/engineering geologic investigations, including ridge and valley traverses, road cut investigations, and river exposures, was conducted for approximately 5 person-days during June 21-25, 1999 by a surficial geologist. Field notes and sediment samples were collected throughout the area for surficial investigations. Surficial mapping involved using sources cited below on a regular basis for checking and correlating general units. The surficial mapper recorded observations on co-registered acetate overlays on 1:50,000-scale (nominal) color-infrared aerial photographs (Alaska High Altitude Aerial Photography, 1978, 1982), and directly on 1:63,360-scale topographic base maps. Stations were located using air photos and topographic maps.
Ashley and others (1984)
Detterman (1953)
Detterman and others (1958)
Hamilton (1986)
Hamilton (1982)
Porter and others (1983)
Waythomas (1991)
1999
Laboratory data - See the report RI 2000-1D for more information.
1999
Photo interpretation - Before, during, and after field work, surficial/engineering geologic information was interpreted using 1:50,000-scale (nominal) color-infrared air-photo stereopairs, and compiled onto acetate overlays. Photo interpretation was based on field notes from fieldwork process step (above), observed land forms and relationships in the photos, and all known geologic data from previous work in the area. The main sources of existing data include the references listed below. The overlay information was transferred to a paper 1:63,360-scale USGS topographic base using a zoom transfer scope.
Ashley and others (1984)
Detterman (1953)
Detterman and others (1958)
Hamilton (1986)
Hamilton (1982)
Porter and others (1983)
Waythomas (1991)
1999
Digital Cartography - Surficial/engineering geologic information was digitized from the paper USGS topographic base map into Arc/Info 7.0.4 GIS (ArcEdit module) using a large-format digitizing table. Surficial/engineering geologic polygons and lines were then edited and attributed using Arc, Info, and ArcEdit. Other cartographic elements, primarily text and tables, were created in CorelDraw, converted to CGM format, and imported into ArcPlot for final layout.
Data from the comprehensive geologic map of the area were used as the basis for generating the derivative engineering-geologic map. An ArcInfo lookup table was made to assign geologic units (item UNIT) from the comprehensive map to appropriate engineering-geologic units (item MAT) based on the Unified Soil Classification System as described by Wagner (1957). This lookup table was applied to the ArcInfo polygon coverage containing the geologic units and a new engineering-geologic polygon coverage was generated using the "dissolve" command based on the new materials-unit item "MAT." Additional features were mapped from ground observations and interpretation of air photos, and digitized and attributed using ArcInfo. ArcPlot was used to generate plot files of the resulting materials coverage using DGGS-standard symbology.
Wagner (1957)
2000
Universal Transverse Mercator
6
0.9996
-147.000
0.0
500000
0.0
coordinate pair
0.000255
0.000255
meters
sagmat
Universal Transverse Mercator
6
0.9996
-147.000
0.0
500000
0.0
coordinate pair
0.000032
0.000032
meters
anwr
D_Clarke_1866
Clarke 1866
6378206.400000
294.978698
anwr_arc.shp
Object type is vector, there are no attributes associated with this entity, and the entity refers to the border of the Arctic National Wildlife Refuge
Alaska Division of Geological & Geophysical Surveys
anwr_arc
sagmat_polygon.shp
Object type is vector, there are 332 rows associated with this entity, and the entity refers to engineering geologic units
Alaska Division of Geological & Geophysical Surveys
sagmat_polygon
MAT
engineering geologic unit labels
Alaska Division of Geological & Geophysical Surveys
BC
Medium-jointed, fine- to coarse-grained sedimentary carbonate rocks. Includes limestone, and dolostone.
Alaska Division of Geological & Geophysical Surveys
BM
Medium-jointed, fine- to medium-grained quartzose sedimentary rocks. Includes quartzose sandstone and conglomerate, quartzite, and chert.
Alaska Division of Geological & Geophysical Surveys
BO
Rocks of mixed lithology and very fine-grained sedimentary lithologies that are generally poorly suited for use as construction materials. Includes shale, siltstone, graywacke and argillite.
Alaska Division of Geological & Geophysical Surveys
GM
Poorly- to moderately well-sorted clay, silt, sand, gravel, and diamicton of colluvial, fluvial and glacial origins. Includes angular, unsorted talus debris and chaotically deformed colluvium derived from landslides.
Alaska Division of Geological & Geophysical Surveys
GS
Fluvial and glaciofluvial gravel, sand, and silt. Chiefly (estimated >80 percent) clean sand and gravel. Grain size, sorting and degree of stratification are variable. Permafrost may be present, especially in older deposits.
Alaska Division of Geological & Geophysical Surveys
NA
Interpretation not available, region covered by a body of water (lake)
Alaska Division of Geological & Geophysical Surveys
OR
Organic-rich silt and peat in bogs and thaw lake basins. Commonly frozen and ice-rich due to the excellent insulating properties of peat. Generally water-saturated. Chiefly organic materials. Estimated >50 percent peat, organic sand, or organic silt.
Alaska Division of Geological & Geophysical Surveys
SM
Silt deposited primarily by wind and reworked by fluvial and colluvial processes. May be organic rich. Commonly frozen and ice-rich, especially on north-facing slopes. Chiefly fine materials. Estimated >80 percent silt, sand, and clay.
Alaska Division of Geological & Geophysical Surveys
X-COORD
Longitude (UTM) of sample location
Alaska Division of Geological & Geophysical Surveys
476390.64978314
499947.68018756
meters
Y-COORD
Latitude (UTM) of sample location
Alaska Division of Geological & Geophysical Surveys
7682130.22648194
7709886.82396563
meters
State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
GIS Data Manager/Cartographer
mailing and physical address
3354 College Road
Fairbanks
AK
99709-3707
USA
(907) 451-5020
(907) 451-5029
(907) 451-5050
dggspubs@alaska.gov
You may view our web site at http://www.dggs.alaska.gov for the latest information on available data. Please e-mail your questions and data requests when possible since our web site and e-mail address will remain current even if our phone number and mailing address change.
Report of Investigation 2000-1D
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 $13.00 (contact information below) plus shipping if mailed.
PDF
1.6
No compression applied
http://dx.doi.org/10.14509/2678
ArcGIS Shapefile
ESRI ArcGIS 9.x
No compression applied
http://dx.doi.org/10.14509/2678
CD-ROM
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). 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.
20080506
20080506
20090525
State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys
Metadata Manager
mailing and physical address
3354 College Road
Fairbanks
AK
99709-3707
USA
907-451-5039
907-451-5050
dggspubs@alaska.gov
8 am to 4:30 pm, Monday through Friday, except State holidays.
Please contact us through the e-mail address above whenever possible.
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
none
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 State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys.