fossil_loc compiled fossil locations
Blodgett, R.B., and Clautice, K.H., 2000, Fossil locality map of the Healy A-6 Quadrangle, south-central Alaska: Report of Investigation RI 2000-5, 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 0.000064
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 6378206.4.
The flattening of the ellipsoid used is 1/294.978698.
| Range of values | |
|---|---|
| Minimum: | 348913.284818 |
| Maximum: | 373463.962979 |
| Units: | meters |
| Range of values | |
|---|---|
| Minimum: | 6989289.53673 |
| Maximum: | 7014932.74724 |
| Units: | meters |
Arbitrary sample number assigned to each fossil location (1-154).
Members of the DGGS mapping crew that contributed fossils for this study included: Rainer Newberry, Ellen Hams, Rocky Reifenstuhl, Shirley Liss, Tom Bundtzen, and Jim Clough. We are greatly indebted to C.C. Hawley for the hospitality extended to DGGS during their stay at the Golden Zone Mine during the summers of 1997 and 1998. We also greatly benefited from his vast knowledge of the areal geology of the Upper Chulitna district. Norm Silberling was extremely helpful during discussions on the Triassic stratigraphy of the region. We also gratefully appreciate the efforts of the following paleontologists in their efforts to identify various elements of the collected fauna: George Stanley, Triassic corals and spongiomorphs; Michael Sandy and Monica Stefanoff, Triassic bivalves; Norman Savage, Paleozoic and Triassic conodonts; and Chris McRoberts, Triassic bivalves. We extend our thanks to Arthur J. Boucot, Oregon State University, Corvallis, Oregon, and David LePain, DGGS, for reviewing this manuscript.
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The purpose of this listing of fossil localities and their contained faunas is to provide biostratigraphic age control for the recent DGGS mapping efforts in the Healy A-6 Quadrangle and surrounding areas.
Hawley, C.C., and Clark, A.L., 1974, Geology and mineral deposits of the Upper Chulitna District, Alaska: U.S. Geological Survey Professional Paper 758-B, U.S. Geological Survey, Reston, VA - USA.Online Links:
Silberling, N.J., Jones, D.L., Csejtey, Bela, Jr., and Nelson, W.H., 1978, Interpretive bedrock geologic map of part of the upper Chulitna district, Healy A-6 quadrangle, Alaska Range, Alaska: U.S. Geological Survey Open-File Report 1961, U.S. Geological Survey, Reston, VA - USA.
Jones, D.L., Silberling, N.J., Csejtey, Bela, Jr., Nelson, W.H., and Blome, C.D., 1980, Age and structural significance of ophiolite and adjoining rocks in the upper Chulitna District, South-central Alaska: U.S. Geological Survey Professional Paper 1121-A, U.S. Geological Survey, Reston, VA - USA.Online Links:
Csejtey, Bela, Jr., Mullen, M.W., Cox, D.P., and Stricker, G.D., 1992, Geology and geochronology of the Healy Quadrangle, south-central Alaska: U.S. Geological Survey Miscellaneous Investigations 1961, U.S. Geological Survey, Reston, VA - USA.Online Links:
Stanley, G.D., Jr., 1999, Upper Triassic reef faunas from the Chulitna terrane, Alaska: Geological Society of America Abstracts with Programs v. 31, no. 7, Geological Society of America, Boulder, CO - USA.
Stefanoff, Monica, Sandy, M.R., and Blodgett, R.B., 1999, Late Triassic brachiopods from the Chulitna terrane, south-central Alaska and the paleogeographic significance: Geological Society of America Abstracts with Programs v. 31, no. 7, Geological Society of America, Boulder, CO - USA.
Yarnell, J.M., Stanley, George, and Hart, C.J.R., 1999, New paleontological investigations of Upper Triassic shallow-water reef carbonates (Lewes River Group) in the Whitehorse area, Yukon Larger_Work_Citation::.Online Links:
Roots, C.F. (ed.), and Emond, D.S. (ed.), 1999, Yukon Exploration and Geology 1998: none none, Exploration and Geological Services Division, Yukon, Indian and Northern Affairs Canada, Whitehorse, Yukon, Canada.
Data sources used in this process:
Clautice, K.H., Newberry, R.J., Blodgett, R.B., Bundtzen, T.K., Gage, B.G., Harris, E.E., Liss, S.A., Miller, M.L., Reifenstuhl, R.R., Clough, J.G., and Pinney, D.S., 2001, Bedrock geologic map of the Chulitna region, southcentral Alaska: Report of Investigation RI 2001-1A, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, Alaska - USA.Online Links:
Clautice, K.H., Newberry, R.J., Pinney, D.S., Blodgett, R.B., Bundtzen, T.K., Gage, B.G., Harris, E.E., Liss, S.A., Miller, M.L., Reifenstuhl, R.R., and Clough, J.G., 2001, Geologic map of the Chulitna region, southcentral Alaska: Report of Investigation RI 2001-1B, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK.Online Links:
Pinney, D.S., 200105, Surficial-geologic map of the Chulitna region, southcentral Alaska: Report of Investigation RI 2001-1C, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK.Online Links:
Pinney, D.S., 2001, Engineering-geologic map of the Chulitna region, southcentral Alaska: Report of Investigation RI 2001-1D, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK.Online Links:
Locations were determined visually from topographic maps in the field. Attributes were verified for consistency and completeness during the creation of the metadata.
Locations were determined visually from topographic maps in the field using 1:63,360 maps that had been enlarged to about 1:40,000 (GPS was not used). The coordinates of sample and station locations were entered into an Excel spreadsheet with a digitizing tablet. Point data was manually compiled/digitized on-screen in MapInfo to create the original published map, using the field sheet for reference. The original published map was then georectified and sample locations were digitized in ArcGIS software in 2007 (see Process_Step below).
This dataset includes geospatial information regarding fossil sample locations in the Healy A-6 Quadrangle.
This dataset consists only point data and does not require topology.
Are there legal restrictions on access or use of the data?
- Access_Constraints:
- 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).
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Report of Investigation 2000-5
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| Data format: | PDF (version 1.6) |
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| Network links: |
<http://dx.doi.org/10.14509/2680> |
| Data format: | ArcGIS Shapefile (version ESRI ArcGIS 9.x) |
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| Network links: |
<http://dx.doi.org/10.14509/2680> |
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