Basinal Fluid Flow Models Related to Zn-Pb Mineralization i the Southern Margin of the Maritimes Basin, Eastern Canada*
Bibliographic record
Abstract
The carbonate-hosted Zn-Pb deposits in the Lower Windsor Group, Nova Scotia, are located along the southern margin of the Maritimes basin. Previous tudies uggest that the deposits formed from basinal brines expelled from the basal part of the Maritimes basin (Horton Group), possibly related to tectonic events in late stages of the basin history, but it remains unclear where the specific source regions were and which mechanism is responsible for fluid expulsion from the source regions to the sites of mineralization. This paper presents two numerical models to address these problems. The first model, based on a stratigraphic profile ranging from the center to the southern margin of the Maritimes basin, simulates the distribution and evolution of fluid overpressures due to sediment compaction. The second model simulates the temperature distribution in a marginal sub-basin under the assumption that fluid flow was driven by topographic relief related to an uplift (highlands) proximal to the ore deposits. Modeling of fluid overpressure evolution indicates that, if the Horton Group sediments were laterally confined by basement highs or faults, fluid pressures approaching or exceeding loading pressures would be easily built up w4thin the Horton Group after deposition ofthe overlying Windsor evaporites. Strong overpres-sures in the Horton Group rocks are predicted not only in the central part of the Maritimes basin but also
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.001 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 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 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".