Litho-and chemostratigraphy of the lower to middle cambrian Mount Clark, Mount Cap and Saline river formations in Hornaday River Canyon, Carcajou Range, and Norman Range, Northwest Territories
Bibliographic record
Abstract
The Lower to Middle Cambrian Mount Clark (sandstone-dominated), Mount Cap (sandstone and \ndolostone), and Saline River (dolostone, gypsite, and siltstone) formations were deposited in an \nepicratonic basin that spans northwestern mainland Canada from the eastern Mackenzie \nMountains to the Arctic coast (>500 km distance). A cross-section through the three Cambrian \nformations was developed based on stratigraphic sections documented at surface exposures on \nthe northeastern margin of the basin (Hornaday River canyon), in the west-central part of the \nbasin (Norman Range), and in two southwestern locations near the ancient Mackenzie arch \n(Carcajou Range). Carbon isotopic (δ13Cvpdb) data for the Mount Cap and Saline River \nformations show correlatable regional trends that are consistent with part of the Cambrian global \ncomposite carbon isotope curve (including the global ROECE and DICE negative carbon isotope \nexcursions), but also highlight local excursions that record phenomena characteristic of specific, \nlocalised depositional paleoenvironments near the Mackenzie arch. Carbon isotope \nchemostratigraphy is here demonstrated to be a robust tool that can augment biostratigraphy in \nfuture studies that require correlation of lower Paleozoic strata in northwestern Canada.
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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 | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.002 | 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".