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Lab number
S-2028
Field number
CMC-1202
Material dated
bone collagen; collagène osseux
Locality
at the toe of the Upper Campbell beach, 350-358 m asl, Swan River valley, Lake Winnipegosis drainage, Manitoba
Map sheet
63 C/03
Submitter
P. Badertscher
Date submitted
March 30, 0097
Measured Age
12980 ± 3190
Normalized Age
13060 ± 3190
δ13C (per mil)
-20.0
Significance
culture?, anomalous, old; anormal, vieux
Context
base of gray sand horizon overlying yellow sand, Unit 17s45e, 62 cm depth
Comments
FbMi-5, Swan River or Swamp: Underlying parent material is composed of Lake Agassiz (Upper Campbell beach) sands and clays, the upper portion bearing evidence of gleying. The site is an early prehistoric campsite with side-notched projectile points resembling those found in Iowa in the Logan Creek Complex. Comment (W. Blake, Jr.): Although dates on material from Lake Agassiz beach were far younger than expected (cf. Elson, 1967) agreement between collagen fraction of butchered bone and organic sediment at same depth is striking. Recovery of collagen by a procedure using SrCO3, giving a result of 2270 +/- 130 years (GSC-1219-2), is reported in Lowdon et al. (1971: 258-259). Colwill (1973) considered the dates to be appropriate for the site. New excavations by Badertscher (1980) resulted in four dates from the Saskatchewan laboratory.

References