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TitreRevisiting legacy core and cross sections from the sub-Imperial Devonian of Mackenzie River Corridor with emphasis on formation boundaries. Part 1. Wells Kugaluk N-02, Norman Wells P32X, Imperial Bear Island R34X, Maida Creek F57, and Devo Creek P45
TéléchargerTéléchargements
AuteurKabanov, P B
SourceCommission géologique du Canada, Dossier public 7466, 2013, 59 pages, https://doi.org/10.4095/292866
Année2013
ÉditeurRessources naturelles Canada
Documentdossier public
Lang.anglais
DOIhttps://doi.org/10.4095/292866
Mediaen ligne; numérique
Liensreadme
Formatspdf; mdb; pmf; mxd
ProvinceTerritoires du Nord-Ouest; Yukon
SNRC95M; 95N; 95O; 96B; 96C; 96D; 96E; 96F; 96G; 96J; 96K; 96L; 97B; 97C; 105M; 105N; 105O; 105P; 106A; 106B; 106C; 106D; 106E; 106F; 106G; 106H; 106I; 106J; 106K; 106L; 107A; 107B; 107C; 107D; 115P; 116A; 116H; 116I; 117A; 117D
Lat/Long OENS-137.0000 -123.0000 71.0000 63.0000
Sujetshydrocarbures; capacité de production d'hydrocarbures; migration des hydrocarbures; roches sédimentaires; puits; analyses de diagrammes de sondage; puits de pétrole; schistes; bassins sédimentaires; porosité; roches reservoirs; reservoirs; roches mères; analyses de la roche mère; présence de pétrole; ressources pétrolières; exploration pétrolière; pétrole; lithologie; milieu sédimentaire; Puit Kugaluk N-02 ; Formation d'Imperial ; Formation de Canol ; Formation de Bluefish ; Formation d'Headless ; Formation d'Hare Indian ; Formation d'Horn River ; Formation d'Hume ; Formation de Landry ; Formation de Ramparts ; combustibles fossiles; stratigraphie; Paléozoïque; Dévonien
Illustrationslocation maps; stratigraphic columns; tables; photographs
Consultation
Endroit
 
Bibliothèque de Ressources naturelles Canada - Ottawa (Sciences de la Terre)
 
ProgrammeCorridor et delta du Mackenzie, GEM : La géocartographie de l'énergie et des minéraux
Diffusé2013 09 13
Résumé(Sommaire disponible en anglais seulement)
This report delivers lithological descriptions of five Devonian cores from the central and northern Mackenzie River Corridor: Kugaluk N-02 (2607 - 3845 ft), Imperial Norman Wells P32X (752.0 - 850.57 m), GCO Maida Creek F-57 (1523 – 1614 ft), Esso/Imperial Bear Island R34X (674-728 m), and EOG et al. Devo Creek P-45 (327-345 m) drilled in the 1960s through 1990s. All these cores were measured during 2012-2013. The most representative material comes from the CPOG Kugaluk N-02 well of the northern Corridor, which is almost continuously cored from the Imperial Formation down to the base of the Devonian, despite some damage that occurred during its lengthy (since 1970) storage, repetitive sampling, and handling. The measured core intersects the Imperial (lower part), Canol, Hare Indian, Horn River (undivided), Hume, Landry formations, and probably the uppermost part of the Arnica Formation. Updated formation correlations based on studied core and logs are given on two cross-sections (Appendices 1 and 2).
In CPOG Kugaluk N-02, the Landry/Headless, Headless/Hume, and Hume/Horn River boundaries appear to be conformities. The Landry/Headless and Headless/Hume boundaries are gradational, and the Hume top is a sharp contact between argillaceous heterozoan limestone and black calcareous shale of the basal Horn River Group. Numerous previously unknown subseismic-scale sequence boundaries (subaerial disconformities) bounding meterscale peritidal cycles (cyclothems) are present within the Landry Limestone (Appendix 1). The Landry cyclothems consist of shallow-subtidal limestones, thick tidal-flat laminites, and non-marine, supposedly palustrine, micritic limestones. The Landry Fm. (948-1164 m of measured depth or MD) contains 35 simple and composite subaerial disconformities. The most developed vadose alteration profiles extend to depths of 3-4 m below the disconformity surfaces. This spectacular cyclic pattern does not yield a distinct signature on available wirelogs. In the Norman Wells area (Appendix 2), the abrupt top of the Ramparts Limestone is a "drowning disconformity" with no evidence for shoaling or subaerial exposure (Norman Wells P32X). In the Imperial Bear Island R34X, the 54 m core penetrating the Carcajou Member of the upper Hare Indian Formation and the basal Ramparts Formation, records the presence of a conformable succession with very gradual upward trend of shallowing and cleaning (argillaceous to non-argillaceous limestones).
Data presented here mostly concur with Muir et al.'s (1984) model of the Ramparts/Kee Scarp carbonate platform evolution and its stratigraphic relationship to the Canol black shale. According to their model, the Hare Indian shale bank (delta front to prodelta settings) stopped forming in response to sea level rise that created conditions for accumulation of shaly and carbonaceous Carcajou limestone. Continuous accretion of a carbonate platform keeping up with the sea level rise created the lower platformal parasequence of the Ramparts Formation labeled K1A by Muir et al. (1984). The top of the reefal Kee Scarp member of the Ramparts Formation is diachronous at Norman Wells and in the adjacent Mackenzie Mountains, recording pulses of backstepping and aggradation. According to Muir et al. (1984), the last Kee Scarp carbonate pinnacles assigned to K6 cycle/parasequence drowned in response to a rapid sea level rise and became blanketed by the Canol fondothem and the Imperial clinothem some time after carbonate sedimentation ceased.
Résumé(Résumé en langage clair et simple, non publié)
Le rapport présente des descriptions lithologiques de cinq carottes du Dévonien : Kugaluk N-02 (2607 ' 3845 pi), Norman Wells P32X (752,0 ' 850,57 m), Maida Creek F-57 (1523 ' 1614 pi), Bear Island R34X (674 ' 728 m) et Devo Creek P-45 (327 ' 345 m) extraites entre les années 1960 et les années 1990. Les matériaux les plus représentatifs proviennent de la carotte Kugaluk N-02. La carotte mesurée recoupe les formations d'Imperial (partie inférieure), de Canol, de Hare Indian, de Horn River (non divisée), de Hume, de Landry et probablement la partie sommitale de la Formation d'Arnica. Des corrélations actualisées des formations sont présentées sous forme de deux coupes transversales. Sur le profil de Kugaluk N-02, les limites des formations de Landry/Headless, Headless/Hume et Hume/Horn River semblent être en concordance. De nombreuses discordances subaériennes d'échelle sous-sismique jusque-là inconnues, limitant des cyclothèmes péritidaux d'échelle métrique, sont présentes dans le Calcaire de Landry. Le réexamen de la carotte de la zone de Norman Wells concorde généralement avec le modèle de Muir et coll. (1984) de l'évolution de la plateforme carbonatée de Ramparts/Kee Scarp et de sa relation stratigraphique avec l'ampélite de Canol.
GEOSCAN ID292866