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Architecture and Sequence Stratigraphy of Pleistocene Fluvial Systems in the Malay Basin, Based on Seismic Time-Slice Analysis

2002· article· en· W2050129817 on OpenAlex

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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 · 2002
Typearticle
Languageen
FieldEarth and Planetary Sciences
TopicGeological and Geophysical Studies
Canadian institutionsUniversity of Toronto
Fundersnot available
KeywordsGeologyFluvialSequence stratigraphySequence (biology)PleistoceneStratigraphyStructural basinPaleontologyMalayGeomorphologyFaciesTectonics

Abstract

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Abstract The Malay Basin is underlain by a productive, gas-prone, nonmarine Cenozoic section. Exploitation of the gas reserves is largely based on three-dimensional (3-D) seismic surveys, which have also generated much data from the nonproductive, near-subsea Pleistocene section. Seven seismic time-slice images at 12 ms two-way travel time (TWTT) spacings that document the 29-86 m sub-sea-floor section of this Pleistocene succession in the northern Malay Basin are analyzed here. These images reveal at least five types of fluvial systems of widely varying style and cross section dimensions, ranging from braided systems with channel-belt widths of more than 4 km to small-scale meandering systems with meander-belt widths of a few hundred meters. An incised-valley system estimated to be 40 m deep is intersected by five of the images and forms the basis for an interpretation of one of two sequence boundaries revealed by this data set. The wide variation in channel style and scale in the project area contrasts with the rather uniform fluvial styles that are assumed in many production models for nonmarine oil and gas fields and should serve as a warning against making simplistic as sumptions about the consistency of these parameters during architectural and reservoir modeling and paleohydraulic reconstruction.

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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 categoriesInsufficient payload (model declined to judge)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.381
Threshold uncertainty score0.999

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.001
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0020.000

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 head0.014
GPT teacher head0.180
Teacher spread0.166 · 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