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Lab number
Field number
CMC- 253
Material dated
mammal bone collagen; collagène osseux de mammifères
Taxa dated
north side of Crowsnest Lake, 1430 m asl, Crowsnest Pass, Alberta
Map sheet
82 G/10
A.L. Bryan
Date submitted
January 8, 0098
Measured Age
22700 ± 1000
Normalized Age
22780 ± 1000
δ13C (per mil)
palaeobiology; paléobiologie
Stratigraphic component
Level 3
square 8W, 110-210 cm depth, brown cave earth bed, to date bone deposit underlying glacial outwash gravel
Associated taxa
Mammalia: Lepus americanus cf 13, Tamias sp 1, Marmota caligata 182, Spermophilus columbianus 45, Spermophilus lateralis 5, Tamiasciurus hudsonicus 1, Thomomys talpoides 3, Castor canadensis 1, Peromyscus maniculatus 18, Neotoma cinerea 16, Phenacomys intermedius 1, Dicrostonyx torquatus 17, Microtus longicaudus cf 4, Vulpes sp 9, Taxidea taxus 4, Odocoileus hemionus 1, Bison bison 1, Ovis canadensis 10; Aves Pisces
Additional information
The Level 3 fauna is listed here.
DjPp-100, Eagle Cave: This is a solution cavern with stratified deposits located about 91 m above Crowsnest Lake, near the Continental Divide. Bryan believes that the GSC date suggests that accumulation of part of the upper layer was very recent and perhaps includes material brought in (and possibly burned) by recent cave explorers. The artifacts in the layer are undoubtedly older than the date. The Gakushuin date places deposition of the bone bed prior to the Late Wisconsinan and shows that Crowsnest Pass was covered with ice >90 m deep some time during the Late Wisconsinan. The cave contained no evidence of previous glaciation. Fauna: Aves 35, Podiceps nigricollis 2, Branta canadensis 1, Anas platyrhynchos 3, Bucephala clangula 1, Anatidae 2, Bonasa umbellus 3, Catoptrophorus semipalmatus? 5; Pisces 14, Salvelinus namaycush cf 1, Salvelinus sp 8, cf. Salvelinus sp 5, Thymallus arcticus 2, Catostomus sp 14, ?Moxostoma macrolepidotum? 1, Catostomidae 1, cf Catostomidae 2