Tertiary volcanic and hypabyssal rocks in the Ugashik quadrangle: A section in Geological Survey research 1981

Professional Paper 1275
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Abstract

Potassium-argon dating of volcanic and hypabyssal rocks from the Ugashik quadrangle by F. H. Wilson and Nora Shew indicates that these rocks fall into the same two age groupings as those of the Chignik and Sutwik Island quadrangles to the south. Rocks of late Eocene to earliest Miocene and latest Miocene to Holocene age are found in both areas. Preliminary mapping by R. L. Detterman, J. E. Case, and F. H. Wilson indicates a major break in the trend to the west. This offset occurs in the vicinity of Wide and Puale Bays.

Additional publication details

Publication type Report
Publication Subtype USGS Numbered Series
Title Tertiary volcanic and hypabyssal rocks in the Ugashik quadrangle: A section in Geological Survey research 1981
Series title Professional Paper
Series number 1275
DOI 10.3133/70180411
Year Published 1982
Language English
Publisher U.S. Government Printing Office
Publisher location Washington, D.C.
Contributing office(s) Alaska Science Center
Description 1 p.
Larger Work Type Report
Larger Work Subtype USGS Numbered Series
Larger Work Title Geological Survey research 1981 (Professional Paper 1275)
First page 89
Last page 89
Country United States
State Alaska
Other Geospatial Ugashik quadrangle