| Abstract: | Landform and generalized bedrock lithologic units have been delineated for ecological landtype association analysis in Glacier Bay National Park in southeast Alaska (as the Park boundaries were defined before the 1971 Alaska National Interest Lands expansion).
Related U.S. Forest Service efforts have covered (1) the whole region at coarse ecological- unit scale, including domains, divisions, provinces, sections, and subsections; and (2) small parts the region at subsection scale. These small parts are generally forest-covered shoreline to timberline areas with relatively subdued topography, extensive bedrock exposures, and no active glaciers. The detailed studies established that the combination of landform and bedrock-lithologic information was a good indicator of ecosystem productivity and types of plant communities.
This study of Glacier Bay National Park covers areas similar to those of the detailed studies but also includes a large proportion of high (15,300 feet), glacier-clad alpine terrain and large, active-valley glacier systems. This terrain reflects (1) the orographic and microclimatic effects associated with the high-altitude barrier that is the Fairweather Range part of the St. Elias Mountains and its rapidly retreating glaciers, and (2) the geologic, tectonic, and erosional history of this range.
In this study, landforms were classified-by using topographic maps and personal experience-into eight categories similar to those used by the U.S. Forest Service. The 90 bedrock-lithologic units on the current Glacier Bay geologic map were classified into 13 generalized lithologic units corresponding exactly to those used by the U.S. Forest Service. Incomplete storm-track, storm-intensity, and limited climatic information have also been compiled. |
| Genre: | USGS Numbered Series |
| ProdID: | 70006111 |
| Citation Author: | Brew, David A. |
| Citation Contributing Office: | U.S. Geological Survey |
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| Citation Edition: | Version 1.0 |
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| Citation Language: | English |
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| Citation Phsyical Description: | iv, 7 p. |
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| Citation Public Comments: | In cooperation with the U.S. Forest Service |
| Citation Publisher: | U.S. Geological Survey |
| Citation Series: | Scientific Investigations Report |
| Citation Series Code: | SIR |
| Citation Series Number: | 2008-5183 |
| Citation Search Results Text: | Delineation of landform and lithologic units for Ecological Landtype-Association analysis in Glacier Bay National Park, Southeast Alaska; 2008; SIR; 2008-5183; Brew, David A. |
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| Citation Year: | 2008 |
| Type: | citation/reference |
| Text: | Delineation of landform and lithologic units for Ecological Landtype-Association analysis in Glacier Bay National Park, Southeast Alaska; 2008; SIR; 2008-5183; Brew, David A. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/sir_2008_5183.png |
| URL (INDEX PAGE): | http://pubs.usgs.gov/sir/2008/5183/ |
| Date Other: | Wed, 30 Nov 2011 00:00 -0600 |
| Publisher: | U.S. Geological Survey |
