Dominant symmetry of a conjugate southern Australian \nand East Antarctic magma‐poor rifted margin segment
Bibliographic record
Abstract
Synthesis and modeling of published deep seismic and potential field data from the conjugate, magmapoor, \nrifted margins of the Great Australian Bight, southern Australia, and central Wilkes Land, East Antarctica, \nshow that there is pronounced symmetry of structures in a 300 km wide zone straddling the axis of \nfinal breakup. This symmetry is observed consistently for a distance of some hundreds of kilometers along \nstrike. From inboard to outboard, both margins comprise a narrow zone of attenuation of the crystalline \ncontinental crust; an approximately 4 km high basement ridge, interpreted as unroofed peridotites, at the \nlocation of maximum thinning of the continental crust; and a 60–70 km wide continent‐ocean transition \nzone that contains a sedimentary basin that may be underlain by altered mantle and fragments of crystalline \ncontinental crust. The marked breakup symmetry described here is in contrast to the asymmetry of the \nIberia‐Newfoundland margin and is consistent with the operation of a symmetrical extensional detachment \nsystem deforming the whole crust in the center of the rift, as envisaged by some numerical models for the \ncontinental rifting process.
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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 | 0.000 | 0.000 |
| 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) | 0.003 | 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".