CGRG Bibliography of Canadian Geomorphology
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Author : Farrand, W.R. and B.B. Miller
Date : 1968
Title : Radiocarbon dates on and depositional environment of the Wasaga Beach (Ontario) Marl Deposit
Publication : Ohio Journal of Science
Issue : 68(4):
Page(s) : 235-239
Abstract
Marl and carbonized organic material, deposited during the Nipissing Great Lakes stage, rests in direct superposition on lower Algonquin (Payette ? stage) beach gravels, at Wasaga Beach, Ontario. Five radiocarbon dates from the marl, (M-1024) 5840+/-350 B. P., (M-1025) 5270+/-350 B. P., (M 1026) 5740+/-250 B. P., (M-1027) 12,250+/-150 B. P. and (M-1028b) 20,000+/-2,000 B. P., vary widely and apparently show the effect of contamination by the addition of "dead" carbon from adjacent Paleozoic carbonate rocks. A sixth date, (M-1028a) 5120+/-400 B. P., obtained from a charcoal layer on top of the gravel, is believed to be correct and records a time near the end of the interval during which waters wore rising to the Nipissing level from the preceding low Stanley stage. The marl deposit has yielded a molluscan fauna consisting of 22 species. The mollusks indicate a quiet, lacustrine environment, with abundant aquatic vegetation. Plant materials from these deposits were too highly degraded to provide much useful paleoecologic information.
Bibliography of Canadian Geomorphology