Franklinian Composite Tectono-Sedimentary Element, Canadian Arctic Islands
Bibliographic record
Abstract
The Neoproterozoic–Devonian strata of the Canadian Arctic Islands record three Tectono-Sedimentary Elements (TSEs): (i) the Neoproterozoic Synrift TSE; (ii) the Neoproterozoic–Late Devonian Franklinian Margin TSE composed of Cambrian–Ordovician carbonate-dominated passive-margin strata and latest Ordovician, Silurian and Lower Devonian mixed carbonate and clastic strata deposited on an unstable margin; and (iii) Middle–Upper Devonian Foreland Basin TSE deposited in an expanding foreland basin. These three TSEs comprise the Franklinian Composite Tectono-Sedimentary Element (CTSE). In the southern parts of the Arctic Islands, strata are flat lying but there is localized faulting and folding in the central Arctic Islands and towards the northern end of the Franklinian CTSE. These strata of the Franklinian Margin and Foreland Basin TSEs were broadly folded over deeply seated reverse faults localized along Late Silurian–Early Devonian contractional uplifts or deformed by widespread Late Devonian thin-skin folds and thrusts related to the Ellesmerian Orogeny. The parts of the CTSE overprinted by Late Silurian–Early Devonian north–south-trending structures are grouped as Boothia Structural Domains, and the area of the CTSE overprinted by Ellesmerian structures is termed the Ellesmerian Structural Domain. The major hydrocarbon source rock is Upper Ordovician–Lower Silurian shale but maximum thermal maturity over much of the area was achieved by the Late Devonian, prior to the formation of large folds. The complex geological history of the area since the Late Devonian reduces the chances of hydrocarbon preservation.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.003 | 0.004 |
| Science and technology studies | 0.003 | 0.000 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.008 | 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".