icelimits_digitize ice limits of four glacial periods on the Kenai peninsula
Reger, R.D., Sturmann, A.G., Berg, E.E., and Burns, P.A.C., 2008, A Guide to the Late Quaternary History of Northern and Western Kenai Peninsula, Alaska: Guidebook GB 8, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, Alaska - USA.Online Links:
This is a Vector data set.
Planar coordinates are encoded using coordinate pair
Abscissae (x-coordinates) are specified to the nearest 0.000001
Ordinates (y-coordinates) are specified to the nearest 0.000001
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.
| Value | Definition |
|---|---|
| Moosehorn | Name of glacial event |
| Elmendorf | Name of glacial evant |
| Skilak | Name of glacial event |
| Killey | Name of glacial event |
| Value | Definition |
|---|---|
| Moraine limit | Line depicting the outlines of extent of glacial moraine deposits |
| Stream drainage | Arrow indicating direction of glacial outwash |
To describe a wide variety of landforms and related processes, including glaciated valleys, massive rock failures, moraines, lake deposits and shorelines features, diversion channels, outwash fans and terraces, braid deltas and braidplains, glaciomarine deposits and coastal terraces, volcanoes, estuarine deposits and effects of land-level change, coastal-bluff stratigraphy, modern beach features, and tsunami hazards.
Karlstrom, T.N.V., 1964, Quaternary geology of the Kenai Lowland and glacial history of the Cook Inlet region, Alaska: U.S. Geological Survey Professional Paper P 443, State of Alaska, Department of Natural Resources, Division of Geological & Geophysical Surveys, Fairbanks, AK, USA.
Data sources used in this process:
Karlstrom, T.N.V., 1964, Quaternary geology of the Kenai Lowland and glacial history of the Cook Inlet region, Alaska: U.S. Geological Survey Professional Paper P 443, United States Government Printing Office, Washington D.C., Maryland.Online Links:
Miller, R.D., and Dobrovolny, Ernest, 1959, Surficial geology of Anchorage and vicinity, Alaska: U.S. Geological Survey Bulletin B 1093, United States Government Printing Office, Washington D.C., Maryland.Online Links:
Reger, R.D., and Pinney, D.S., 1996, Late Wisconsin glaciation of the Cook Inlet region with emphasis on Kenai Lowland and implications for early peopling: Cook Inlet Historical Society, Anchorage, Alaska.
Davis, N.Y. (ed.), and Davis, W.E. (ed.), 1996, Adventures through time: Readings in the anthropology of Cook Inlet, Alaska: Cook Inlet Historical Society, Anchorage, Alaska.
Reger, R.D., and Pinney, D.S., 1996, Last major glaciation of Kenai Lowland: Cook Inlet Historical Society, Anchorage, Alaska.
Karl, S.M. (ed.), Vaughn, N.R. (ed.), and Ryherd, T.J. (ed.), 1997, 1997 guide to the geology of the Kenai Peninsula, Alaska: Alaska Geological Society, Anchorage, Alaska.
Reger, R.D., and Updike, R.G., 1983, Upper Cook Inlet and the Matanuska Valley: Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska.Online Links:
Péwé, T.L. (ed.), and Reger, R.D. (ed.), 1983, Guidebook to permafrost and Quaternary geology along the Richardson and Glenn Highways between Fairbanks and Anchorage, Alaska: Guidebook GB 1, Alaska Division of Geological & Geophysical Surveys, Fairbanks, Alaska.
Schmoll, H.R., and Yehle, L.A., 1986, Pleistocene glaciation of the upper Cook Inlet basin: Cook Inlet Historical Society, Anchorage, Alaska.
Hamilton, T.D. (ed.), Reed, K.M. (ed.), and Thorson, R.M. (ed.), 1986, Glaciation in Alaska: The geologic record: Alaska Geological Society, Anchorage, Alaska.
Schmoll, H.R., Yehle, L.A., Gardner, C.A., and Odum, J.K., 1984, Guide to surficial geology and glacial stratigraphy in the upper Cook Inlet basin: Alaska Geological Society, Anchorage, Alaska.
Schmoll, H.R., Yehle, L.A., and Updike, R.G., 1999, Summary of Quaternary geology of the Municipality of Anchorage, Alaska: Quaternary International v. 60, Elsevier, Inc., Unknown.
The paleogeographic maps were prepared by interpretation of aerial photographs and maps verified by field investigations. Aerial photographs interpreted include 7-6-75 1:15,840-scale black-and-white photos, 7-7-76 1:15,840-scale color photos, August 1984 1:63,360-scale false-color infrared photos, and 6-14-98 1:12,000-scale color photos. Maps interpreted are 1:25,000-scale provisional-edition metric maps of the Kenai Quadrangle published in 1986 and 1987 and of the Seldovia Quadrangle published in 1987. Field investigations were conducted from 1976 through 2006. Data for paleogeographic arc shapefile were 'on screen' digitized from a scanned paper map compilations. Paleogeographic information was compiled on paper topographic maps with abundant control points at 1:25,000 scale and registered in ArcGis 9.2, then reduced to a layer onto a 1:63,360-scale USGS topographic base.
This dataset includes geospatial information about paleogeographic linear features depicting ice limits of four glacial periods on the Kenai peninsula.
Data are arc (line) data and do not require topologic relationships.
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- Access_Constraints:
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Guidebook 8
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| Data format: | PDF (version 1.6) |
|---|---|
| Network links: |
<http://dx.doi.org/10.14509/15941> |
| Data format: | ArcGIS Shapefile (version ESRI ArcGIS 9.x) |
|---|---|
| Network links: |
<http://dx.doi.org/10.14509/15941> |
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