Magnetostratigraphic and biostratigraphic correlation of late Campanian and Maastrichtian marine and continental strata from the Red Deer Valley to the Cypress Hills, Alberta, Canada
Bibliographic record
Abstract
Two stratigraphic sequences, Red Deer Valley and Cypress Hills sections in Alberta, spanning the late Campanian to Paleocene are magnetostratigraphically and biostratigraphically characterized. The Red Deer Valley section had previously been studied, but additional material has allowed the extension of the magnetozonation downwards into the Bearpaw Formation. Higher sample resolution has allowed the identification of a number of magnetosubzones in 32n, 32r, and 33n. Four reversed magnetosubzones have been identified in magnetozone 32n in addition to the one presently recognized in geomagnetic polarity time scales. One normal subzone in 32r and one reversed subzone in 33n have also been recorded. The 32r33n boundary is shown to occur in the Baculites cuneatus Zone. The Campanian-Maastrichtian boundary is indicated to be at or near the Baculites eliasi Baculites baculus boundary at the top of 32n. Comparisons of the biostratigraphy between the two areas indicate that palynomorph ranges differ from data published to date, suggesting that readjustments to the previously published zonation are needed. Correlations between the two areas are possible using the magnetostratigraphic and palynological zones and allow comparisons of depositional rates.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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 teacher head, 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".