Preliminary 3D modelling and structural interpretation of southeastern Athabasca Basin
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Bibliographic record
Abstract
The southeastern portion of the Athabasca basin hosts the largest high-grade unconformity-related uranium deposits in the world, including the McArthur River and Key Lake deposits. As a first step of an effort to reconstruct and model the fluid flow related to uranium mineralization, a 3D model of the sub-Athabasca unconformity and basin stratigraphy has been constructed using publicly available geological, geophysical and drill-hole data. Several cross-sections have been built and integrated into the 3D model to constrain the spatial configuration of Athabasca Group units. Faults have been identified using an iterative approach where potential fault lineaments were identified using the basement geophysical signature then confirmed by the presence of spatial relationships to offsets of the unconformity surface. Using this approach, three dominant sets of faults, inferred to be subvertical, have been identified in the study area: northeast trending, north-northwest trending and northwest trending. In the 3D model, the unconformity surface shows an approximately northeasttrending zone of elevated topography where elevations change abruptly (SE to NW) from about -100 m to +200 m (referenced to mean sea level). This topographic ridge of the unconformity surface is associated with the Phoenix - McArthur River deposits trend. A preliminary cross-section illustrates that this topographic high may be controlled by northeast-trending reverse faults that have uplifted the basement. Regional clay anomalies in the Athabasca Group and the majority of deposits and prospects are also broadly coincident with this feature. Future work will be focussed on increasing resolution of the model in this and other key areas to gain a better understanding of the geometry and kinematics of regional plus local structures and their control on fluid flow and uranium mineralization.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 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 it