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Date Permissions Signed
Date of Award
Master of Science (MS)
Schwartz, Maurice L.
Easterbrook, Don J., 1935-
Ross, Charles A., 1933-
The evidence presented suggests that terraces and related features found on Bay View Ridge, Skagit County, Washington are raised marine in origin, and formed 13,000 - 11,000 years before present during the Everson Interstade of the Fraser Glaciation. Methods of investigation included topographic profiling, geologic mapping of surface deposits, identifying primary sedimentary structures, grain-size distribution analyses, identifying textural surface features on quartz grains utilizing the Scanning Electron Microscope and radiocarbon age dating.
Little or no measurable differential vertical tectonic and/or glacio-isostatic relative movement has occurred at Bay View Ridge since the Everson Interstade. Volcanic ash found in two peat bogs on Bay View Ridge is believed to have resulted from the eruptions of Mount Mazama.
Raised marine terraces
Western Washington University
Subject – LCSH
Terraces (Geology)--Washington (State)--Skagit County; Geology, Stratigraphic; Geology--Washington (State)--Skagit County
Skagit County (Wash.); Bay View Ridge (Wash.)
Copying of this document in whole or in part is allowable only for scholarly purposes. It is understood, however, that any copying or publication of this thesis for commercial purposes, or for financial gain, shall not be allowed without the author's written permission.
Siegfried, Robert T., "Stratigraphy and Chronology of Raised Marine Terraces, Bay View Ridge, Skagit County, Washington" (1978). WWU Graduate School Collection. 788.