Neoproterozoic plutonic rocks of the eastern Cobequid Highlands, N.S. (NTS 11E/10&11)
Bibliographic record
Abstract
Crystalline rocks east of Earltown in the Cobequid Highlands, Colchester County, Nova Scotia, have been mapped and representative samples studied for petrography, rock geochemistry and minerai chemistry. About 50 whole-rock analyses, 70 petrographic descriptions ofrocks, and 140 minerai analyses are presented. The rocks are plutonic or highly deformed plutonic rocks and almost ail petrographically and geochemically resemble Neoproterozoic plutonic rocks known elsewhere in the Cobequid Highlands, including gabbro, tonalite, granodiorite and granite. Minor Devonian-Carboniferous gabbro and intrusive rhyolite is found near the Cobequid Fault. Severa! types ofNeoproterozoic plutonic rocks are distinguished on the basis of petrography and geochemistry. These occurs in two groups, correlatable with the Bass River Block and the Jeff ers Block of the central and western Cobequid Highlands. The Mount Thom Complex comprises metasedimentary rocks of the Gambie Brook Formation intruded by late Proterozoic mafic plutonic rocks, and th us is not a basement to the A val on zone. lt has a similar origin to the Great Village River Gneiss. The Rockland Brook fault represents the Neoproterozoic suture zone of the Bass River and Jeff ers blocks. In the central Cobequid Highlands, this fault was reactivated in the late Paleozoic and was an important pathway for magma, but it was not reactivated in the eastem Cobequids Highlands, whether motion was taken up on the Cobequid and Millsville faults.
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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 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.004 | 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".