Mesozoic tectonic and stratigraphic evolution of the Orphan Basin, with special emphasis on regional correlations with Flemish Pass and Northern Jeanne d'Arc Basins, Grand Banks of Newfoundland
Notice bibliographique
Résumé
The tectonic framework and depositional settings of the Orphan Basin are studied using ~25,000 km of 2-D seismic reflection profiles and stratigraphic data from nine key exploration wells. The evolution of the region is recorded in five seismic distinct stratigraphic units (Z, A, B, C, X), each separated from one another by widespread regional markers U1-U4, representing prominent unconformities. Exploration well data showed that Units Z, A, B, C and X are correlated with the Pre-Cambrian/Paleozoic basement, ?Triassic/Jurassic, Early Cretaceous, Late Cretaceous and Tertiary successions, respectively. Similarly, the well data showed that U1, U2, U3 and U4 markers are correlated with the Top Paleozoic, Top Jurassic, Mid-Cretaceous and Base Tertiary Unconformities, respectively. The well data further showed that the seismic Units A, B+C, and X are broadly correlated with three regional tectonic episodes, where each episode includes a period of extension, followed by a period of protracted uplift associated with sectoral break-up, and a period of sustained thermally-driven subsidence. -- On the basis of stratigraphic and structural architecture of the successions imaged between the Top Paleozoic Unconformity and the Base Tertiary Unconformity, the study area is divided into five tectonic provinces: the Western and Southwestern Basin Margin, the Eastern Basin Margin, the White Sail Fault Zone, the West Basin and Ridge Province, and the East Basin. The Bonavista and White Sail Fault Zones were developed during the ?Jurassic (may be as early as Triassic if evaporates are present in the Orphan Basin), as prominent basin-bounding faults. Several large faults paralleling the White Sail Fault Zone also developed during this time. The extensional tectonic activity continued in the study area throughout the Cretaceous, but slowly culminated in the late Cretaceous / Early Tertiary as indicated by the absence of growth strata within the Tertiary succession associated with the faults, and tip points of these faults being situated in the Early Tertiary successions. -- The seismic data documents that faults in the northern and northeastern segment of the Orphan Basin display greater growth, rotation and tilting of the mid-Late Cretaceous successions than those observed in the western and southern segment of the basin. These observations together with the large fan-shaped fault splays of the White Sail Fault Zone collectively suggest that the Flemish Cap probably experienced a progressive clockwise rotation of 25°-35° during the Late Jurassic - Late Cretaceous. This rotation and extrusion of the Flemish Cap is largely accommodated by the Cumberland Belt Fault Zone in the south and the Charlie Gibbs Transfer Zone in the north.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».