Exhumation of the Huangling anticline in the Three Gorges region: Cenozoic sedimentary record from the western Jianghan Basin, China
Why this work is in the frame
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Bibliographic record
Abstract
Abstract Within the interior of the Yangtze Craton, the dome‐like Huangling anticline exposes ca . 1000 km 2 of Archaean basement and Neoproterozoic granitoid rocks in the Three Gorges region, providing a natural laboratory for studying the mechanism of intracontinental exhumation. Cretaceous shortening of the Qinling Orogen and Cenozoic reorganization of the Yangtze River have been considered by previous thermochronology studies to account for the two‐phase exhumation of the Huangling anticline. However, little is known about when and how the batholithic rocks were exposed to the surface. To fully reveal the exhumation history of the Huangling anticline, we focus on the Cenozoic sedimentary record in the western Jianghan Basin, downstream of the Three Gorges, and examined spatio‐temporal changes in sedimentation dynamic and provenance on the basis of sedimentary facies, palaeocurrents and clast compositions, as well as zircon U‐Pb geochronology. Our results indicate continuous unroofing of the Huangling anticline since the Eocene and provide a solid evidence for first exposure of the Huangling batholith during the Neogene. Cenozoic exhumation of the Huangling anticline is synchronous with incision of the Three Gorges, indicating a mechanism of intracontinental exhumation due to Yangtze River reorganization through which the Middle Yangtze River was progressively captured by the Lower Yangtze River with locally increased erosion rates in the Three Gorges.
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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 | 0.001 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.005 | 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 it