Geology and Origin of a Coastal Placer Chromite Deposit, Port au Port Bay, Western Newfoundland, Canada
Bibliographic record
Abstract
Detrital chromite (Cr) is currently accumulating in the modern wave-influenced and gravel-dominated shoreface environment of eastern Port au Port Bay, western Newfoundland. Chromite concentrations of up to 7485 ppm occur in modern cross-bedded shallow marine gravel and pebbly sand facies derived from a large late- and early postglacial fan delta complex undergoing rapid marine erosion. The fan delta fills a broad coastal embayment and was constructed during an early postglacial phase of rapid crustal rebound and low relative sea level that lasted until about 9,500 ybp. Since coastal outcrops of the fan delta have undergone rapid erosion and sediments in response to ongoing postglacial sea level rise outpacing the rate of crustal recovery, chromite-bearing sediment is being re-transported and reworked southwards by shore parallel currents resulting in much higher concentrations within a nearshore chromite placer deposit, some 8 km long and 2 km wide.
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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 | 0.002 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.005 | 0.001 |
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".