Permian-Carboniferous Tectono-Stratigraphic Evolution and Petroleum Potential of the Northern Canning Basin, Western Australia
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Bibliographic record
Abstract
Abstract The Canning basin (400,000 km2) of Western Australia is one of the largest intracratonic basins to have been affected by cold climates as Gondwana drifted across the south polar regions during the Permian—Carboniferous. This article describes the tectono-stratigraphic setting and evolution of the Permian—Carboniferous Reeves Formation and Grant Group of the northern part of the basin. We employ seismic facies analysis, downhole well-log responses, palynostratigraphy, and sedimentary facies logs from 25 continuously cored wells. The succession rests on a widespread erosional unconformity of middle Carboniferous age. This surface may have been modified by glacial erosion when a late Carboniferous ice sheet expanded across the entire basin, but no primary glacial deposits can be identified; if present, such sediments were likely reworked during subsequent basin faulting. Reeves Formation and Grant Group strata are dominated by massive and deformed sandstones, diamictites, and conglomerates deposited subaqueously as sediment gravity flows close to active faults. Initial strata of Late Carboniferous age (Reeves Formation) are preserved in the deeper troughs (Fitzroy trough) and in salt collapse subbasins on high-standing structural blocks (Barbwire, Betty, and Balgo terraces; Crossland platform). These areas later subsided and were blanketed by gravity flow deposits of Early Permian age (Hoya Formation). In turn, a regional flooding surface and overlying bioturbated siltstone unit (Calytrix Formation) records an increase in relative water depths across the northern Canning basin. Siltstones coarsen upward into lower shoreface storm-influenced sandstones (Clianthus Formation) and the fluvial Poole Sandstone. Potential petroleum play types are principally associated with faults and channels.
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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) | 0.001 | 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 it