Lithospheric Thinning Under the Atlantis-Meteor Seamount Complex (North Atlantic)
Bibliographic record
Abstract
The Atlantis-Meteor Seamount Complex, a group of submarine volcanoes located about 700 km to the south of the Azores, was investigated on the basis of seismic, magnetic and gravity data. The depths in the area around the seamount complex are too shallow compared to the standard cooling curve for oceanic lithosphere. The free air anomalies in the area are predominantly positive. Thermal lithospheric rejuvenation caused by the injection of heat into the lithosphere, embodied by intrusive masses, has been proposed as a unifying concept. A flexural study was carried out and resulted in estimates of the elastic thickness of the lithosphere under the various seamounts. Assuming that these values represent the lithospheric thicknesses under the seamounts at the time of loading, the ages of the seamounts are found to range from 38 to 66 Ma. This is in conflict with the Early Miocene to Late Oligocene age of the seamount complex inferred from a sediment model-study, a subsidence analysis, and two available K-Ar determinations. It is argued that the excessive ages found in the flexural study are due to the neglecting of the effect of thermal lithospheric rejuvenation on the elastic thickness of the lithosphere (lithospheric thinning). Lithospheric thinning will become evident as a decrease of the flexural rigidity and, therefore, means a resetting of the age of the lithoshere when loaded. As a result, the computed ages of the seamounts become too large. It appears that the degree of lithospheric thinning under the seamounts of the Atlantis Meteor Seamount complex is by no means uniform.
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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 | 0.000 |
| 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".