The emergence of cultural complexity in the Bering strait: A refined radiocarbon chronology for the Ekven (Old Bering Sea) mortuary complex
Bibliographic record
Abstract
Two major debates frame Arctic prehistory: the emergence of specialized maritime economies that support sedentism and growing socio-political complexity, and the role of these economies in the transition from Paleo-Inuit to Neo-Inuit traditions. This shift, originating in the Bering Strait, led to Thule Inuit dispersal across the Arctic, impacting Indigenous communities today. However, understanding these themes is still hampered by the challenges of building accurate site-based and regional-scale radiocarbon chronologies, influenced by driftwood use and marine reservoir effects. This paper presents a new high-resolution chronology for the key Ekven mortuary complex, located on the western shores of the Bering Strait, a site that defines the Old Bering Sea (OBS) phase, marking the earliest onset of the Neo-Inuit tradition. It is based on new direct radiocarbon dates of ancestral human remains and Bayesian modelling using OxCal, which considers available stratigraphic information, individual diets, previously dated faunal remains, and appropriate and species-specific ΔR values to account for marine reservoir effects. Our results suggest that the OBS emerged in this region at around 500 CE, which is later than some models predict, and indicate that the mortuary complex was used intensively until c. 1000 CE, after which few individuals were buried. The revised chronology also creates new opportunities to better integrate diverse cultural and palaeoecological proxies from across the Bering Strait, potentially clarifying the precise role of climatic and environmental factors at a key cultural juncture in Arctic prehistory.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot 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.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 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 teacher head, 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".