Totnes Road metavolcanic rocks: a fragmental, Ti-enriched komatiitic volcanic suite on Cumberland Peninsula, Baffin Island, Nunavut
Bibliographic record
Abstract
A distinctive sequence of fragmental komatiite and komatiitic basalt exposed on Cumberland Peninsula, eastern Baffin Island, is thought to be part of the Paleoproterozoic Hoare Bay Group. Its fragmental nature suggests the actions of steam and magmatic explosivity of ultramafic magma under relatively shallow water. Its Al-undepleted geochemical character suggests a parental magma derived from shallow-mantle melting at pressures of 4 to 6 GPa, while its Ti, high field-strength element (HFSE), and LREE-enrichment suggest retention of the first melt increment or modification of the parental magma during its ascent to surface. Collectively, the textural and compositional characteristics are consistent with Karasjok-type komatiites - a Ti-enriched komatiitic composition first described from the Karasjok Greenstone Belt in Finland. The Totnes Road komatiites are associated with clastic and chemical metasedimentary rocks, an association documented at other localities on Cumberland Peninsula.
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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 | 0.001 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.004 | 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".