fbxmat_polygon geologic materials units (polygon)
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, Alaska - USA.
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.
|Codeset Source:||Alaska Division of Geological & Geophysical Surveys <http://www.dggs.dnr.state.ak.us/metadata/PDF1996-17_codeset.pdf>|
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: Digital cartography and layout by G.R.C. Graham.
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The purpose is to indicate areas where there is a high likelihood of finding the desired geologic materials. Local variations are common, especially near unit boundaries. Precise economic evaluation of specific localities as sources of desired geologic materials will require detailed examination of each deposit, including areal extent, volume, grain-size variation, thickness of overburden, thermal state of the ground, depth to ground water, access, demand, and land ownership.
Pewe, T.L., and Bell, J.W., 1975, Map Showing Construction Materials in the Fairbanks D-2 NW Quadrangle Alaska: Miscellaneous Field Studies Map MF-668C.
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, AK, USA.
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.
This dataset includes geospatial information about geologic materials units.
Polygon topology present and clean.
Are there legal restrictions on access or use of the data?
- 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).
- 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.
Public Data File 96-17
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|Data format:||PDF (version 1.6)|
|Data format:||ArcGIS Shapefile (version ESRI ArcGIS 9.x)|
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