Geochemistry of basalt from the Wolverine volcanic-hosted massive-sulphide deposit, Finlayson Lake district, Yukon Territory
Bibliographic record
Abstract
Massive basaltic flows stratigraphically overlie aphyric felsic rocks in the hanging wall of the Wolverine volcanic-hosted massive-sulphide deposit. The geochemical signatures of these flows are simi-lar to those of normal and enriched mid-ocean-ridge basalt; however, some have elevated Th contents simi-lar to back-arc-basin basalt. These features suggest that Wolverine basalt was derived from depleted to weakly enriched mantle sources with minor subduction-zone metasomatic input and/or a crustal component via crustal contamination. The presence of such rocks in close primary association and juxtaposition with crustally derived felsic volcanic rocks, together with their bulk compositions, indicate that the Wolverine deposit formed within an ensialic back-arc rift to nascent back-arc-basin setting. The flat heavy rare-earth-element signatures on chondrite-normalized plots require that the Wolverine basalt formed from low-pressure mantle melting (spinel stability field) with a minimal lithospheric cap.
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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 | 0.001 | 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) | 0.001 | 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".