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Lab number
GrN-2580
Material dated
conifer wood; bois de conifère
Locality
Lake Erie shore, Elgin County, Ontario
Map sheet
40 I/11
Submitter
A. Dreimanis
Date submitted
May 7, 0098
Normalized Age
44400 ± 1200
Significance
palaeobiology; paléobiologie
Context
ice-contact gravel 3-4' thick, 8' above the lake, 600' northeast of the type locality of the Port Talbot interstadial, associated with a mastodon tusk
Associated taxa
Mammalia: Mammut americanum
Additional information
Previous dates on this sample: >34,000 (S-46), >29,500 (L-440).
Comments
AdHi-VP, Port Talbot: The gravel containing a mastodon tusk is younger than S-7 (>25000 BP; McCallum, 1955), older than L-185B (28200 +/- 1500 BP; Broecker and Kulp, 1957), L-217B (24600 +/- 1600 BP; Broecker and Kulp, 1957), and W-177 (27500 +/- 1200; Rubin and Suess, 1955), and dates a glacial advance following the Port Talbot interstadial and preceding the Plum Point interstadial (Dreimanis, 1958a, 1958b). Another portion of the same sample was analyzed by the Lamont laboratory (L-440, >29500). Yet another portion was dated by the Groningen laboratory (Gro-2580, 44200 +/- 1500), confirming the suggestion by Olson and Broecker that this sample has a finite age.

References