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TitreGeology of the Late Cretaceous to Cenozoic Beaufort-Mackenzie Basin, Canada
AuteurDixon, J; Dietrich, J R; Lane, L S; McNeil, D H
SourceThe sedimentary basins of the United States and Canada; par Miall, A D (éd.); Sedimentary basins of the world 5, 2008 p. 551-572, https://doi.org/10.1016/s1874-5997(08)00016-6
Année2008
Séries alt.Secteur des sciences de la Terre, Contribution externe 20060510
ÉditeurElsevier
Documentpublication en série
Lang.anglais
DOIhttps://doi.org/10.1016/s1874-5997(08)00016-6
Mediapapier; en ligne; numérique
Formatspdf
ProvinceTerritoires du Nord-Ouest; Yukon
SNRC107A; 107B; 107C; 107D; 107E; 107F; 117A; 117B/01; 117B/08; 117B/09; 117B/16; 117C/01; 117C/08; 117C/09; 117C/16; 117D; 117E; 117F/01; 117F/08; 117F/09; 117F/16
Lat/Long OENS-141.0000 -128.0000 71.0000 68.0000
Sujetsgéologie du substratum rocheux; tectonique de plaques; éléments tectoniques; cadre tectonique; marges plaques; antécédents tectoniques; stades tectoniques; décrochement horizontal; orogénies; déformation; sedimentation; affaissement; rotation terrestre; bassins sédimentaires; marges continentales; caractéristiques structurales; failles; plis; Crétacé supérieur; trangressions; régressions; deltas; faciès deltaïques; discordances; hydrocarbures; ressources pétrolières; pétrole; gaz; charbon; contrôles structuraux; pieces structuraux; roches reservoirs; roches sédimentaires; grès; milieu sédimentaire; analyses géochimiques; carbone organique; maturation thermique; puits; puits de gaz; puits de pétrole; biostratigraphie; Bassin de Beaufort-Mackenzie ; Cordillère canadienne; Ceinture de Cordilleran Fold ; Séquence d'Iperk ; Séquence d'Akpak ; Séquence de Mackenzie Bay ; Séquence de Kugmallit ; Séquence de Richards ; Séquence de Taglu ; Séquence d'Aklak ; Séquence de Fish River ; Séquence de Mason River ; Séquence de Smoking Hills ; Séquence de Boundary Creek ; géologie régional; tectonique; stratigraphie; géologie structurale; sédimentologie; combustibles fossiles; Phanérozoïque; Cénozoïque; Quaternaire; Tertiaire; Mésozoïque; Crétacé
Illustrationssketch maps; cross-sections; stratigraphic charts; gamma ray logs; profiles; seismic reflection profiles; schematic representations
ProgrammeSécurité de l'approvisionnement énergétique du Canada
Résumé(disponible en anglais seulement)
The Canadian Beaufort-Mackenzie Basin lies on the continental margin of the Arctic Ocean and contains 14-16 km of Late Cretaceous to Recent sediment, the bulk of which is Tertiary in age. It has rifted basin margins although the southeastern margin has been overprinted by compressional structures that are contemporaneous with deposition and are part of the Cordilleran foldbelt that extends along west North America. The combination of post-rift subsidence and tectonic loading explains the thick accumulation of Late Cretaceous to Recent sediments. These sediments have been divided into several large transgressive-regressive sequences, each one dominated by the formation of delta complexes and their lateral equivalents. Sediment was supplied mostly from the rising orogenic belt on the southwestern margin of the basin.
Several phases of tectonism have been recognized, each terminated by a major basin-scale unconformity. The first phase extended from the Late Cretaceous to about the Middle Eocene, the second from Middle Eocene to the Late Miocene, and the third from the Late Miocene to the present. The first two phases are dominated by compressional tectonics, although listric faults and some translational faults also formed. The third phase is characterized by the lack of any significant deformation.
The basin has significant reserves of oil and gas and its potential of additional resources is high. Exploration in the basin started in the 1960s but has undergone several periods of exploration slow-down. At present there is renewed activity and undoubtedly this basin will be a major source of hydrocarbons in the future.
GEOSCAN ID223140