The ‘La Celle interglacial’: a key-record of MIS 11c palaeoenvironments and palaeoclimate in NW Europe
Bibliographic record
Abstract
The La Celle calcareous tufa formation, located in the Seine valley (Paris Basin, France) provides an exceptional stratigraphic record (9 m thick), yielding a wide variety of palaeontological remains (molluscs, leaf prints, ostracods, mammals) as well as geochemical data allowing a detailed reconstruction of the environmental and climatic dynamics during the Marine Isotope Stage (MIS) 11c interglacial. The chronological assignment of the site is particularly well constrained by a number of methods (U-series, electron spin resonance, thermoluminescence). This review synthesises previously published data as well as new research on the formation of the deposit (stratigraphy, micromorphology), amino-acid geochronology, palaeobotany, and compares these results with those of European palynological references. Several important markers of the continental environments during MIS 11c are identified. The malacological succession is of particular importance for reconstructing the vegetation dynamics, reflecting the expansion of forest biotopes and their subsequent degradation and is closely linked to geochemical analyses, providing a reliable framework for the associated climatic conditions. The La Celle sequence yields the only complete record for the development of the “ Lyrodiscus fauna”, a characteristic biostratigraphic signature of MIS 11c in NW Europe. The long molluscan succession of La Celle is the relevant reference for the integration of shorter regional malacological series into the environmental dynamics of the interglacial. The occurrence of several Mediterranean trees, and mammal remains of Hippopotamus and Macaca are registered during the climatic optimum revealed by geochemistry. Together with isotopic data this set of thermophilic bioproxies indicates the warmest and wettest conditions ever recorded for late Middle Pleistocene interglacials in the region. Comparison of the reconstructed palaeoenvironmental and climatic succession with the nearest long pollen series demonstrates that the La Celle tufa deposit records almost the entire interglacial. Therefore, the “La Celle Interglacial” is proposed as a major reference for understanding the evolution of the MIS 11c continental landscapes and biodiversity in northwestern Europe. • Major record of continental MIS 11c climatic and environmental dynamics in NW Europe. • Coupled land snails and isotopes allow correlation with palynological references. • La Celle Interglacial is a key reference for NW European MIS 11c palaeobiodiversity.
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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 | 0.001 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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".