Stratigraphic response to sedimentation in a net-accommodation-limited setting, Lower Cretaceous Basal Quartz, south-central Alberta
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Résumé
Research Article| March 01, 2002 Stratigraphic response to sedimentation in a net-accommodation-limited setting, Lower Cretaceous Basal Quartz, south-central Alberta R.W.C. Arnott; R.W.C. Arnott Department of Earth Sciences and Ottawa-Carleton Geosciences Centre, University of Ottawa, Ottawa, ON KIN 6N5 Search for other works by this author on: GSW Google Scholar B.A. Zaitlin; B.A. Zaitlin EnCana Corporation, 150-9 Avenue SW, Calgary, AB T2P 2S5 Search for other works by this author on: GSW Google Scholar D.J. Potocki D.J. Potocki EnCana Corporation, 150-9 Avenue SW, Calgary, AB T2P 2S5 Search for other works by this author on: GSW Google Scholar Author and Article Information R.W.C. Arnott Department of Earth Sciences and Ottawa-Carleton Geosciences Centre, University of Ottawa, Ottawa, ON KIN 6N5 B.A. Zaitlin EnCana Corporation, 150-9 Avenue SW, Calgary, AB T2P 2S5 D.J. Potocki EnCana Corporation, 150-9 Avenue SW, Calgary, AB T2P 2S5 Publisher: Canadian Society of Petroleum Geologists Received: 19 Apr 2001 Revision Received: 15 Sep 2001 First Online: 02 Mar 2017 Online ISSN: 2368-0261 Print ISSN: 0007-4802 © The Society of Canadian Petroleum Geologists Bulletin of Canadian Petroleum Geology (2002) 50 (1): 92–104. https://doi.org/10.2113/50.1.92 Article history Received: 19 Apr 2001 Revision Received: 15 Sep 2001 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation R.W.C. Arnott, B.A. Zaitlin, D.J. Potocki; Stratigraphic response to sedimentation in a net-accommodation-limited setting, Lower Cretaceous Basal Quartz, south-central Alberta. Bulletin of Canadian Petroleum Geology 2002;; 50 (1): 92–104. doi: https://doi.org/10.2113/50.1.92 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyBulletin of Canadian Petroleum Geology Search Advanced Search Abstract Based on differences in mineralogy, paleovalley morphology, hydrocarbon production history and crosscutting Stratigraphic relationships, the subsurface Basal Quartz in the study area is interpreted to comprise four paleovalley fills consisting of braided-fluvial strata overlain abruptly by meandering fluvial strata. Significantly these strata accumulated in an accommodation-limited part of the basin where net sedimentation rate was only about 1 m/m.y. Accordingly, stratal characteristics contrast markedly with those in more extensively studied nonmarine successions that accumulated in high net-accommodation basins, and include (1) each unconformity bounded sequence is significantly thinner, (2) the upward change from braided-fluvial to meandering-fluvial or tidal strata occurs abruptly, and (3) a general lack of finegrained floodplain mudstone, which improves significantly the lateral connectivity of reservoir sandstones. A long-term effect of limited net accommodation, and the consequent slow aggradation of the sedimentary pile, is the repeated cannibalization of older valley-fill deposits by younger paleovalleys. This creates a stratigraphy consisting of laterally and vertically consistent stratal assemblage dominated by a single, typically the youngest, paleovalley fill. In places, however, parts of older paleovalley fills are preserved as localized remnants surrounded on most sides by younger strata. On a local scale, this results in the development of a significantly more complicated stratigraphy marked by rapid lithological changes, and similarly reservoir quality, even over short horizontal distances. On a more regional scale, the complex crosscutting of different-aged paleovalley fills, in addition to the tendency for each paleovalley to incise from a similar Stratigraphic level, makes Stratigraphic correlation difficult. Together, these characteristics can have significant Stratigraphic and economic ramifications. This content is PDF only. Please click on the PDF icon to access. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
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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 | 0,001 | 0,001 |
| 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) | 0,038 | 0,001 |
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 ».