fbxcline_arc anticline and syncline traces of axial planes fbxflt_arc fault location traces and types fbxgeo_arc geologic units (arc) fbxgeo_polygon geologic units (polygon) fbxgeou_arc subsurface data extrapolated from geophysics data fbxsamp_point points of sample localities (Sheet 2) fbxstrdip_point point attribute table that displays strike and dip information fbxstsym_point points for the strike, dip, and plunge of bedding planes, foliation, and various lineaments pingos_point points of pingo localities skpnts_point points of skarn localities
Newberry, R.J., Bundtzen, T.K., Clautice, K.H., Combellick, R.A., Douglas, Tom, Laird, G.M., Liss, S.A., Pinney, D.S., Reifenstuhl, R.R., and Solie, D.N., 1996, Preliminary Geologic Map of the Fairbanks Mining District, Alaska: Public Data File PDF 96-16, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, Alaska - USA.Online Links:
Planar coordinates are encoded using coordinate pair
Abscissae (x-coordinates) are specified to the nearest 0.000128
Ordinates (y-coordinates) are specified to the nearest 0.000128
Planar coordinates are specified in meters
The horizontal datum used is D_Clarke_1866.
The ellipsoid used is Clarke 1866.
The semi-major axis of the ellipsoid used is 6378206.4.
The flattening of the ellipsoid used is 1/294.978698.
| Formal codeset | |
|---|---|
| Codeset Name: | PDF1996-16_codeset.pdf |
| Codeset Source: | Alaska Division of Geological & Geophysical Surveys <http://www.dggs.dnr.state.ak.us/metadata/PDF1996-16_codeset.pdf> |
| Formal codeset | |
|---|---|
| Codeset Name: | PDF1996-16_codeset.pdf |
| Codeset Source: | Alaska Division of Geological & Geophysical Surveys <http://www.dggs.dnr.state.ak.us/metadata/PDF1996-16_codeset.pdf> |
| Formal codeset | |
|---|---|
| Codeset Name: | PDF1996-16_codeset.pdf |
| Codeset Source: | Alaska Division of Geological & Geophysical Surveys <http://www.dggs.dnr.state.ak.us/metadata/PDF1996-16_codeset.pdf> |
| Value | Definition |
|---|---|
| 1 | Solid contact |
| 2 | Sm. dashed contact |
| 4 | Dotted contact |
| 20 | Solid fault |
| 23 | Very sm. dashed fault |
| 103 | no line (hidden) |
| 998 | Fault/contacts |
| Value | Definition |
|---|---|
| Tbc | Concealed Tertiary Basalt; See PDF1996-16_codeset.pdf |
| Value | Definition |
|---|---|
| 10 | Solid anti/syncline |
| 20 | Solid fault |
| 21 | Dashed fault |
| 22 | Dotted fault |
| 23 | Very sm. dashed fault |
| 25 | Dash-? fault |
| 28 | Shear |
| 55 | Dash-? thrust fault |
| 71 | Dashed thrust fault |
| 73 | Dotted thrust fault |
| 997 | neatline (border) |
| 998 | Fault/contacts |
| Value | Definition |
|---|---|
| 0 | High Angle Fault |
| 2 | Dashed line (Map has not been cartographically reviewed.) |
| Value | Definition |
|---|---|
| 10 | Solid anti/syncline |
| 11 | Sm. dashed anti/syncline |
| 13 | Dotted anti/syncline |
| Range of values | |
|---|---|
| Minimum: | 0 |
| Maximum: | 90 |
| Value | Definition |
|---|---|
| 1 | Strike and direction of dip of beds. |
| 4 | Strike and dip of overturned beds. |
| 5 | Strike of vertical beds, stratigraphic tops to north. |
| Value | Definition |
|---|---|
| f0 | Arrow shows direction and plunge of secondary isoclinal fold. |
| f1 | Arrow shows direction and plunge of secondary isoclinal fold. |
| fa | plunge (Map has not been cartographically reviewed.) |
| ML | plunge (Map has not been cartographically reviewed.) |
| Value | Definition |
|---|---|
| 66 | Anticline and trace of axial plane. |
| 67 | Syncline and trace of axial plane. |
| 133 | Plunge |
| 145 | Strike-slip fault |
| Value | Definition |
|---|---|
| 140 | Pingo is collapsed |
| 141 | Pingo is intact (whole) |
| Value | Definition |
|---|---|
| pingocall | Pingo is collapsed |
| pingowhole | Pingo is intact (whole) |
Location of a geologic measurement: YrAAA999X: Yr=2 digit year of sample collection, AA=geologist's initials (two characters), 999=unique station number. Geologists' initials are: BT - Tom Bundtzen, KC - Karen Clautice, RN - Rainer Newberry.
This project is part of the DGGS's Airborne Geophysical/Geological Mapping Program funded by the Alaska State Legislature and managed by State of Alaska, Department of Natural Resources (DNR), Division of Geological & Geophysical Surveys (DGGS). Partial funding was also provided through the U.S. Geological Survey's National Geologic Mapping Act-STATEMAP Program. 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. government. Additional acknowledgments: Bedrock geology field investigations by: R. Newberry, T.K. Bundtzen, K.H. Clautice, R.R. Reifenstuhl, D.N. Solie, G.M. Laird, S.A. Liss, and T. Douglas in summer (1995); Surficial geology field investigations by: D.S. Pinney and R.A. Combellick in summer (1995,1996); Cartographic Design: G.R.C. Graham, D.S. Pinney, L.K. Queen, G.L. Laird and G. Davidson June 15th - July 5th (1996); Edited by: Paula Davis.
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This project and resulting report, map and geospatial data are intended to provide an updated surficial and bedrock geologic map of the Fairbanks Mining District at 1:63,360 scale that depicts construction material availability, geologic hazards, mineral potential, and new geologic information. The Fairbanks mining district was originally mapped 15 years ago by Metz (1982), Robinson (1982), and Bundtzen (1982). The final map product was not published until 1990 (Robinson and others, 1990). The earlier work did not include surficial coverage and due to extensive cover the bedrock geology was based on only a few percent rock exposure.
Robinson, M.S., Smith, T.E., and Metz, P.A., 1990, Bedrock Geology of the Fairbanks Mining District: Alaska: Professional Report PR 106, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.
Combellick, R.A., and Bundtzen, T.K., 1996, Preliminary Derivative Geologic Materials Map of the Fairbanks Mining District, Alaska: Public Data File PDF 96-17, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.Online Links:
Geologic data were digitized from a mylar geologic compilation. This compilation was done on a one to one scale, stable mylar of the USGS topographic base for each of the 1:63,360 scale USGS topographic bases included in the map area. 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.
Location data were determined visually using topographic maps at scales of 1:63,360 and larger. Altimeters were also used. GPS technology was not used to determine locations. Instead, geologic contacts, sample, and station locations were visually hand-plotted onto stable mylar bases from the field maps. The coordinates of sample and station locations were determined with a digitizing tablet. All samples plotted on the maps are included in the various tables.
Thommen TM altimeters were frequently used and calibrated daily.
This dataset includes geospatial information about geologic units, sample locations, structural features, structural measurements, pingo locations, and skarn locations.
Polygon topology present and clean on appropriate data. Other data are line, point, or annotation data and do not require topologic relationships. Chain-node topology present.
Are there legal restrictions on access or use of the data?
- Access_Constraints:
- This report, map, and/or data set are available directly from the State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys (see contact information below).
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Public Data File 96-16
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| Data format: | PDF (version 1.6) |
|---|---|
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<http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=1740> |
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|---|---|
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