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Date Permissions Signed
Date of Award
Master of Science (MS)
Suczek, Christopher A., 1942-2014
Clark, Douglas H., 1961-
Housen, Bernard Arthur
The Sumas Stade, the last of the Fraser Glaciation advances, occurred between 12,000 and 10,000 14C years B.P. This study combines previous mapping (Easterbrook, 1976; Haugerud, written communication, 1999) with three new tests to establish a chronology for events of the Sumas Stade. Comparison of compositions of pebbles from Sumas outwash using multivariate statistics such as hierarchical clustering and k-means clustering revealed three major groups of late Sumas outwash and one earlier deposit. Magnetic susceptibility and Curie temperature analysis determined a general British Columbia provenance for the Sumas outwash. Flow direction measurements substantiated this determination. Taken together, these tests support the Sumas phases proposed by Haugerud and establish Curie temperature analysis as a means to help determine provenance of glacial sediment.
Sumas Stade, Sumas outwash, Magnetic susceptibility, Curie temperature analysis
Western Washington University
Sumas Region (Wash.); British Columbia
Copying of this thesis 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.
Laub, Jeff, "A Pebble Count Comparison and Rock Magnetism Provenance Study of Sumas Outwash" (2001). WWU Graduate School Collection. 762.