Regional Groundwater Dynamics as a Cause for the Genesis of the Pine Point MVT Lead-Zinc Ore Deposits
Bibliographic record
Abstract
The genesis of MVT ore deposits, like those at Pine Point mines in Canada, has been the subject of debate for many years. The consensus is that the ore bodies were caused by hydrothermal saline water in the geological past from the Middle Devonian age to the Tertiary age. Garven (1985) pointed out that ‘from a hydrologic perspective, ore genesis could have taken place at any period in which gravity-driven flow systems were operative.’ Presently favorable gravity-driven flow systems are in place. Understanding their groundwater dynamics puts some of the previously established hypotheses on the Pine Point ore genesis into a new context. It is generally said that, based on isotope and fluid inclusion data, the temperature of the ore forming fluid in the Pine Point area must have been hydrothermal in a temperature range approaching 100 °C or more. The average homogenized temperature in fluid inclusions in dolomite in the area is 116 °C and the burial temperature about 70 °C according to Qing (1991). This paper shows, however, that presently mineralization occurs at 3°C water temperature driven by microorganisms.
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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 | 0.000 | 0.000 |
| Scholarly communication | 0.001 | 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".