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- Lab number
- AECV-1581C
- Material dated
- wood; bois
- Locality
- Villeneuve, northwest of Edmonton, North Saskatchewan River, Alberta
- Map sheet
- 83 H/12
- Submitter
- J.A. Burns
- Date submitted
- March 9, 2006
- Normalized Age
- 35500 ± 2530
- Significance
- palaeobiology; paléobiologie
- Context
- gravel pit
- Associated taxa
- Mammalia: Arctodus simus
- Additional information
- The bear listed here was not directly associated with the date, but it was found nearby in Mid-Wisconsinan sediments.
- Comments
- Consolidated Pit 45: The basal facies was a distinct, dark-stained gravel, < 2m thick, containing pockets of black spruce (Picea mariana) logs, mosses, and other plant fragments. As a group, dates on the spruce logs, ranging from 35500 to 42910 BP, represent the oldest dates obtained from seven studied gravel pits in the Edmonton area (Young et al., 1994: 684). Thick (10-15 m) fluvial sand and gravel facies dominate the valley fill. Within these, at about the same stratigraphic levels in both Pit 45 and Pit 46, are several planar unconformities that extend laterally. Lithologies are mainly quartzite and chert, with no clasts of Canadian Shield rock. In contrast, the glacial deposits overlying the gravels contain abundant igneous and metamorphic rocks and minerals derived from the shield. The glacial deposits comprise 4-5 m of lodgement and melt-out till, thought to represent a single advance of Laurentide ice, and about half of the gravel clasts are of shield origin.