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Lab number
TO-6350
Field number
EC 96-1
Material dated
marmot bone collagen; collagène osseux de marmotte
Taxa dated
Marmota caligata
Locality
north side of Crowsnest Lake, 1430 m asl, Crowsnest Pass, Alberta
Map sheet
82 G/10
Submitter
L.E. Jackson, Jr.
Date submitted
June 23, 0097
Normalized Age
34860 ± 470
Significance
palaeobiology; paléobiologie
Stratigraphic component
Level 4
Context
calcareous silt overlain by late Wisconsin gravel on a limestone cave floor, 2.07 m depth
Associated taxa
Mammalia: Ochotona princeps 4, Lepus americanus cf. 1, Marmota caligata 15, Spermophilus columbianus 5, Peromyscus maniculatus 5, Neotoma cinerea 4, Dicrostonyx torquatus 1, Microtus richardsoni 1, Ovis canadensis 2; Aves 4, Anatidae 2, Strigiformes 1; Pisces: Salvelinus sp. 4, Catostomus sp 3
Additional information
AMS date. The Level 4 fauna is listed here.
Comments
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.

References