Sedimentology, Depositional Environment and Reservoir Quality of the Miri Formation and the Lambir Formation in Miri, Sarawak
Bibliographic record
Abstract
In Miri, shallow marine rock formations represent important analogues to the age equivalent, hydrocarbon-bearing offshore in Baram Province. Based on the sedimentological data gathered from all of the outcrops, the depositional environment or paleoenvironment of the rock formations was studied to relate them to the reservoir quality. This work presents the detailed facies analysis of the Miri Formation and Lambir Formation exposed around Miri, Sarawak, East Malaysia. Outcrops of the Miri Formation and Lambir Formation around Airport Road, Canada Hill, Lambir Hill, and Miri-Bintulu Road were studied. Eight (8) lithofacies recognized in the Miri Formation include hummocky sandstone, interbedded sandstone-mudstone, herringbone cross-bedded sandstone, lenticular-bedded facies, bioturbated sandstone, trough and tabular cross-bedded sandstone, massive sandstone, and flaser to wavy-bedded facies. Facies analysis conducted in the Lambir Formation had identified five (5) main lithofacies which are massive sandstone, trough cross-bedded sandstone, flaser to wavy-bedded facies, lenticular-bedded facies, and interbedded sandstone-mudstone. The depositional environments for the Miri Formation are interpreted as a wave-dominated shoreface and a tide-dominated estuary based on the abundance of hummocky structures and the presence of herringbone structure in the outcrop respectively. On the other hand, the Lambir Formation is interpreted as an estuarine and tidal-dominated environment due to the dominance of tidal flat associations and heterolithic bedding.
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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 | 0.001 |
| 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 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".