Stratigraphy, structure, and petrology of a representative klippe of the Bravo Lake Formation, Piling Group, central Baffin Island, Nunavut
Bibliographic record
Abstract
The stratigraphy, structure, metamorphism, and mineral-deposit potential of a prospective type area for the Paleoproterozoic Bravo Lake Formation has been characterized in a well exposed klippe. The klippe is in thrust contact with underlying metaturbidite of the Longstaff Bluff Formation. The Bravo Lake Formation overlies a rusty, strongly sheared metasedimentary basal unit immediately above the thrust contact. The formation in the klippe comprises a lower volcanic unit, pillow basalt, siliciclastic and chemical metasedimentary rocks intruded by ultramafic sills, an upper volcanic unit, and an upper metasedimentary unit containing laminated sulphide pods. Exposures east of the klippe preserve a higher volcanic unit not seen in the klippe. Peak metamorphism (approximately 650°C, 3.0-4.0 kbar) postdates major fabric-forming deformation events. Ultramafic rocks in the klippe could potentially host magmatic sulphide deposits, and some metasedimentary rocks could potentially host exhalative sulphide deposits.
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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 | 0.000 | 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 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".