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Permian-Carboniferous Tectono-Stratigraphic Evolution and Petroleum Potential of the Northern Canning Basin, Western Australia

2001· article· en· W2139025964 on OpenAlex

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

VenueAAPG Bulletin · 2001
Typearticle
Languageen
FieldEarth and Planetary Sciences
TopicGeological and Geophysical Studies
Canadian institutionsThe Scarborough HospitalMcMaster UniversityUniversity of Toronto
Fundersnot available
KeywordsCarboniferousGeologyPermianStructural basinPaleontology

Abstract

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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 imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.005
Threshold uncertainty score0.986

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0010.000

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.

Opus teacher head0.012
GPT teacher head0.189
Teacher spread0.178 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it