A 1:100,000-scale map of surficial deposits in Glacier Bay National Park and Preserve, Southeast Alaska
Becker RA, Streveler GP, Mickelson DM. 2012. A 1:100,000-scale map of surficial deposits in Glacier Bay National Park and Preserve, Southeast Alaska. Natural Resource Technical Report. NPS/GLBA/NRTR—2012/638. National Park Service. Fort Collins, Colorado
A 1:100,000-scale surficial geology map of Glacier Bay National Park and Preserve was produced by digitizing published maps, interpreting aerial photography, and systematizing personal observations. The map area also includes the Icy Strait islands, Gustavus, and the Canadian portion of the Bay’s watershed. Mapping efforts were concentrated on the lowlands, as these deposits are most abundant, complex, and relevant to visitors and management. The 1948 set of aerial photographs was primarily used in mapping, as that set provides the most complete coverage of the map area with the least amount of vegetation, but older and younger photos were also consulted. Sediments were classified in terms of age (Pleistocene, Holocene, or currently active) and how they were deposited (i.e., by streams, glaciers, wind, gravity, etc.). In places where there was some knowledge of underlying sediments, this information was captured as well. The result is a map that covers 2475 km2 (exclusive of areas covered by water, ice, or without mappable sediments) and has 1364 “polygons” belonging to 17 different sediment types.
- Type
- Published Report
- Authors
- Becker, Richard; Streveler, Gregory; Mickelson, David
- Date of Issue
- 2012-10
- Publisher
- National Park Service
- Units
- GLBA , NRSS , SEAN
- Subjects
- Ecological Framework: Geology and Soils | Geomorphology | Hillslope Features and Processes , Ecological Framework: Geology and Soils | Geomorphology | Coastal/Oceanographic Features and Processes , Ecological Framework: Geology and Soils | Soil Quality | Soil Function and Dynamics