Paleoenvironmental interpretation of the paleosols and sediments at the Stampede site (DjOn-26), Cypress Hills, Alberta
Bibliographic record
Abstract
A 3.65 m-thick sequence of paleosols and sediments exposed at the Stampede archaeological site provides an opportunity for studying climate change and its impact on ancient site utilization over a 7200-year period. Three radiocarbon dates establish temporal boundaries for the lower sequence of paleosols and sediments at 7200 and 6100 BP. This lower sequence is characterized by lack of cultural material in most paleosols, high accumulation rates, and evidence for fluvial deposition. The upper sequence dates from 6100 BP and is characterized by low accumulation rates, increased pedogenesis, and increased evidence for human occupation, particularily between 4660 and 5230 BP. Phytoliths provide a strong signal for grassland vegetation beginning at 6100 years BP coincident with the most intensive occupation of the site. Stable carbon isotopes and carbon/nitrogen (C/N) ratios support the presence of grass. The differences evident between the lower and upper sequences can be attributed to the change from warm dry conditions to cooler, moister conditions and agree to a first approximation with the information inferred from the nearby Elkwater Lake and Harris Lake records. However, the persistence of forest at the Stampede site for a 1400-year time interval, when the Harris Lake record indicates more arid conditions, suggests that springs and north-facing slopes made the Cypress Hills an "oasis" for both animals and people.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.002 | 0.002 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".