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Lab number
GSC-2256
Field number
SF-74-191
Material dated
bison bone collagen; collagène osseux de bison
Taxa dated
Bison sp. (431 g, id. by C.S. Churcher)
Locality
Ponomar gravel pit on the northeast side of Oldman River, 860 m asl, about 13 km west-northwest of Lethbridge and 4 km west-southwest of Kipp, Alberta
Map sheet
82 H/14
Submitter
A.M. Stalker
Date submitted
May 28, 0098
Normalized Age
650 ± 50
δ13C (per mil)
-20.2
Significance
palaeobiology; paléobiologie
Context
poorly sorted sand and gravel, 1-3 m below the surface of the second terrace above Oldman River
Associated taxa
Mammalia: Bison sp
Comments
DkPg-VP, Kipp: The second terrace base is 7 m, and its top 10 m, above the normal river level. The bison bone is substantially younger than the estimated 3000 years, indicating a fairly recent rejuvenation of Oldman River, with deepening of its valley, after it had incised to near its present grade. Such rejuvenation is further indicated by decreased meandering of the river in recent time. The cause of this rejuvenation is not known.

References