Bibliographic record
Abstract
Abstract Although admired and examined since antiquity, carbonate sediment and rock research really began with Charles Darwin who, during a discovery phase , studied, documented and interpreted their nature in the mid‐19th century. The modern discipline, however, really began after World War II and evolved in two distinct phases. Breakthroughs during an advancement phase came about via the numerous studies by many researchers globally on both modern and ancient carbonates that were eventually merged into carbonate sedimentology as a whole in the 1970s. Formulation of the factory concept and integration of recurring facies into facies models solidified the discipline and allowed integration to move ahead. Stromatolites were discovered growing in modern environments and it was realised that the spectrum of diverse fossil structures called reefs also existed in the modern world. Internal reef structure was largely interpreted as ecological. At the same time, development of radiogenic and stable isotopes allowed Pleistocene carbonate stratigraphy and processes to be accurately dated, and precipitates related specific formation waters. Cementation, long postulated as mostly meteoric, was also realised to be a common synsedimentary phenomenon. Breakthroughs during the more recent refinement phase were likewise synthesised into books, but incrementally as the science progressed. Research on the genesis of critical components such as ooids, stromatolites and carbonate muds was at last convincing. The whole new realm of cool‐water carbonates was revealed with resulting different interpretations of rock record facies and the critical role of aragonite in diagenesis. Reconciling the relationship between sea water nutrient levels, factory type and taphonomy was a major advancement to interpreting the stratigraphic record. Sequence stratigraphy, coupled with shallow drilling and isotopes, led to progressively more dynamic interpretations, especially of reefs. Use of stable isotopes became more sophisticated, and development of clumped isotopes held out possibilities of even more precise interpretations. Finally, although prediction of a future phase is futile, much more needs to be done on mixed carbonate‐siliciclastic systems, and the implications of mixed carbonate ironstone and chert in Precambrian accumulations, especially using new geochemical techniques. Perhaps, philosophically, it is time to use attributes of the exquisite carbonate rock record to tell us about the future of our rapidly changing world.
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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 | 0.005 | 0.005 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.008 | 0.007 |
| Science and technology studies | 0.002 | 0.014 |
| Scholarly communication | 0.010 | 0.006 |
| Open science | 0.002 | 0.004 |
| Research integrity | 0.002 | 0.005 |
| Insufficient payload (model declined to judge) | 0.003 | 0.001 |
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".