Structure and development of the southeast Newfoundland continental passive margin: derived from SCREECH Transect 3
Bibliographic record
Abstract
New seismic reflection data from the Grand Banks of Newfoundland and the Newfoundland \nBasin add to the growing knowledge of the composition, structure and history of this nonvolcanic \nmargin. Geophysical imaging is now approaching the extent of that done previously \non the conjugate margin along Iberia, providing a valuable database for the development \nof rifting models. Two parallel profiles over the shelf platform image deep crustal fabric \nrepresenting Precambrian or possibly Appalachian deformation as well asMesozoic extension. \nProgressively more intense extension of continental crust is imaged oceanwards without the \nhighly reflective detachments frequently seen on profiles off Galicia. A landward-dipping \nevent ‘L’ is imaged sporadically and appears to be analogous to a similar event on the Iberian \nIAM9 profile. The transition zone is probably exposed serpentinized mantle as interpreted \noff the Iberian margin although there appears to be a difference in the character of ridge \ndevelopment and reflectivity. The distinctive ‘U’ reflection identified previously at the base \nof the Newfoundland Basin deep water sedimentary section and recently identified as one or \nmore thin basalt sills is imaged on newly presented profiles that connect previously published \nprofiles SCR3 and SCR2 showing that ‘U’ is highly regular and continuous except where \ninterrupted by basement highs. ‘U’ is also seen to have a major impact on the ability to image \nunderlying basement. A full transect beginning over completely unextended continental crust \nthrough to oceanic crust has provided a data set from which estimates of extension and the \npre-rifting location of the present continental edge can be made. Two estimates were obtained; \n85 km based on faulting and 120 km based on crustal thickness.
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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 | 0.000 | 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) | 0.002 | 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".