Surficial geologic map of the Shaktoolik area, Norton Bay Quadrangle, Alaska
Dates
Publication Date
2017
Start Date
2011
End Date
2017
File Modification Date
2017-06-22 11:42:00
Citation
DeRaps, M.R., Kinsman, N.E.M., Stevens, D.S.P., and Overbeck, J.R., 2017, Surficial geologic map of the Shaktoolik area, Norton Bay Quadrangle, Alaska: Alaska Division of Geological & Geophysical Surveys, http://doi.org/10.14509/29723.
Summary
This 1:50,000 scale geologic map describes the distribution of unconsolidated deposits, identifies local geologic hazards, and provides information about the depositional environment and basic engineering properties of common surficial-geologic materials in and around Shaktoolik, Alaska. Map units are the result of combined field observations and aerial imagery interpretation. A suite of local ground observations were collected over a two-week period in July 2011 by a helicopter-supported team of DGGS geologists and collaborators. Field investigations included soil test pits, sample collection, soil and rock description, oblique aerial photography, and documentation of landscape morphology.
Summary
This 1:50,000 scale geologic map describes the distribution of unconsolidated deposits, identifies local geologic hazards, and provides information about the depositional environment and basic engineering properties of common surficial-geologic materials in and around Shaktoolik, Alaska. Map units are the result of combined field observations and aerial imagery interpretation. A suite of local ground observations were collected over a two-week period in July 2011 by a helicopter-supported team of DGGS geologists and collaborators. Field investigations included soil test pits, sample collection, soil and rock description, oblique aerial photography, and documentation of landscape morphology.
According to the 2010 United States census, more than 60 percent of Alaskans reside in coastal communities. Many of these communities are exposed to a wide range of geologic hazards including erosion, landslides, wave attack, storm surge/flooding, tsunami and ivu (ice push). Since 2004, reports and recommendations from the U.S. General Accounting Office, the U.S. Army Corps of Engineers, and the Immediate Action Work Group of the Governor's Subcabinet on Climate Change have highlighted the imperiled or at-risk status of many Alaskan villages that are subject to severe flooding and erosion. In response to both existing risks and to shifts in the frequency and/or magnitude of geohazard- triggering events, including those that may be influenced by changing climate, communities throughout the state are becoming increasingly involved with mitigation or adaptation efforts in response to these natural hazards. Baseline data pertaining to local geology, coastal and oceanic processes, and historic natural hazard events are necessary to facilitate adaptation efforts.
