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Record W2590942499

Evolution géodynamique et paléogéographique mésozoïque du nord de l'Alaska : du bassin amérasien à l'orogenèse brookienne

2015· dissertation· fr· W2590942499 on OpenAlexaboutno aff
Nicolas Lemonnier

Bibliographic record

Venuetheses.fr (ABES) · 2015
Typedissertation
Languagefr
FieldEarth and Planetary Sciences
TopicGeological Studies and Exploration
Canadian institutionsnot available
Fundersnot available
KeywordsHumanitiesGeologyArt
DOInot available

Abstract

fetched live from OpenAlex

Le bassin canadien figure parmi les rares bassins au monde dont la nature et la geometrie du substratum, et donc le mode d'ouverture, ne sont aujourd'hui pas connus. Les modeles paleogeographiques contraints par les rares donnees disponibles sont sujets a des interpretations controversees avancant des mecanismes et des âges d'ouverture differents, voire contradictoires. Selon les modeles paleogeographiques proposes, les marges du bassin canadien sont tantot extensives, tantot transformantes. L'etude de leurs structures et de leurs histoires detaillees est un exercice prealable a la discrimination des modeles plausibles. Le modele d'ouverture le plus couru fait appel a un changement de polarite de la subduction au sud du bassin canadien au cours de l'orogenese brookienne polyphasee.La chaine de Brooks se situe au nord de la peninsule alaskane et au sud du bassin canadien. Elle est un des nombreux stades d'assemblage des terranes de la Cordillere Nord-Americaine : celui de l'implication d' Arctic-Alaska-Chukotka (AAC) Son stade collisionnel est repute synchrone de l'ouverture du bassin canadien. C'est donc la qu'il faut chercher les indices des couplages entre la tectonique du bassin au Nord, la deformation intra-cordillere en Alaska et le systeme de subductions au Sud. Cette orogene est un temoin actif de l'ouverture du bassin canadien, il a enregistre et modifie les conditions aux limites qui ont preside a son ouverture. La chronologie relative du developpement des deux structures est donc essentielle et toute reconstruction de la geodynamique regionale se doit de les concilier en termes de cinematique et de conditions aux limites.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.800
Threshold uncertainty score0.401

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0010.001
Science and technology studies0.0010.001
Scholarly communication0.0010.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0020.000

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.

Opus teacher head0.028
GPT teacher head0.240
Teacher spread0.212 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designObservational
Domainnot available
GenreEmpirical

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".

Quick stats

Citations0
Published2015
Admission routes1
Has abstractyes

Explore more

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