Surficial geologic map of the Dillingham quadrangle, southwestern Alaska

Scientific Investigations Map 3388



The geologic map of the Dillingham quadrangle in southwestern Alaska shows surficial unconsolidated deposits, many of which are alluvial or glacial in nature. The map area, part of Alaska that was largely not glaciated during the late Wisconsin glaciation, has a long history reflecting local and more distant glaciations. Late Wisconsin glacial deposits have limited extent in the eastern part of the quadrangle, but are quite extensive in the western part of the quadrangle. This map and accompanying digital files are the result of the interpretation of black and white aerial photographs from the 1950s as well as more modern imagery. Limited new field mapping in the area was conducted as part of a bedrock mapping project in the northeastern part of the quadrangle; however, extensive aerial photographic interpretation represents the bulk of the mapping effort.

Suggested Citation

Wilson, F.H., 2018, Surficial geologic map of the Dillingham quadrangle, southwestern Alaska: U.S. Geological Survey Scientific Investigations Map 3388, 15 p., scale 1:250,000,

ISSN: 2329-132X (online)

Study Area

Publication type Report
Publication Subtype USGS Numbered Series
Title Surficial geologic map of the Dillingham quadrangle, southwestern Alaska
Series title Scientific Investigations Map
Series number 3388
DOI 10.3133/sim3388
Year Published 2018
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Contributing office(s) Alaska Science Center
Description Sheet: 29.8 x 34.3 inches; Pamphlet: iii, 15 p.; FAQ; Metadata; Read Me
Country United States
State Alaska
Other Geospatial Dillingham quadrangle
Online Only (Y/N) Y
Additional Online Files (Y/N) Y
Google Analytic Metrics Metrics page
Additional publication details