Revised stratigraphy of the Middle Devonian (Givetian) Winnipegosis Carbonate-Prairie Evaporite Transition, Elk Point Group, southern Saskatchewan
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Résumé
Research Article| December 01, 2001 Revised stratigraphy of the Middle Devonian (Givetian) Winnipegosis Carbonate–Prairie Evaporite Transition, Elk Point Group, southern Saskatchewan Jisuo Jin; Jisuo Jin Department of Earth Sciences, University of Western Ontario, London, ON N6A 5B7 Search for other works by this author on: GSW Google Scholar Katherine M. Bergman Katherine M. Bergman Department of Geology, University of Regina, Regina, SK S4S 0A2 Search for other works by this author on: GSW Google Scholar Author and Article Information Jisuo Jin Department of Earth Sciences, University of Western Ontario, London, ON N6A 5B7 Katherine M. Bergman Department of Geology, University of Regina, Regina, SK S4S 0A2 Publisher: Canadian Society of Petroleum Geologists Received: 01 Nov 2000 Accepted: 01 Apr 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 (2001) 49 (4): 441–457. https://doi.org/10.2113/49.4.441 Article history Received: 01 Nov 2000 Accepted: 01 Apr 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 Jisuo Jin, Katherine M. Bergman; Revised stratigraphy of the Middle Devonian (Givetian) Winnipegosis Carbonate–Prairie Evaporite Transition, Elk Point Group, southern Saskatchewan. Bulletin of Canadian Petroleum Geology 2001;; 49 (4): 441–457. doi: https://doi.org/10.2113/49.4.441 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 The Ratner Member was previously included in the Middle Devonian Winnipegosis Formation of the Elk Point Basin. Recent studies, however, have demonstrated that the Ratner Member was not genetically related to the Winnipegosis Formation in terms of depositional environments and thus should not be part of the Winnipegosis Formation. In this paper we propose that the Ratner Member be raised to formational status. In the northern portion (Saskatoon–Quill Lake area) of the Saskatchewan sub-basin, the type section of the Ratner Formation comprises three vertically stacked brining-upward successions, each of which consists of a basal unit of carbonate laminite, a middle unit of interlaminated carbonate and anhydrite, and a capping unit of enterolithic bedded anhydrite. Compared to the type section, the Ratner Formation in the southern part of the Saskatchewan sub-basin has a number of distinct features, including: (1) a much darker grey colour because of its greater proportion of organic-rich partings, (2) more pervasive development of fine, crinkly lamination or cryptalgal structures, (3) considerably less common enterolithic anhydrite beds, (4) more common calcitization of anhydrite, whereby anhydrite laminae were altered to coarsely crystalline white dolomite, (5) less common occurrences of contorted, interlaminated dolomite and anhydrite caused by displacive anhydrite growth, and (6) predominance of single-cycled laminite succession. Most of these characteristics, especially the darker-grey colour and general lack of multiple cycles, are interpreted as the result of deposition of the laminite in a deeper-water setting in the southern part of the Saskatchewan sub-basin, where more frequent and prolonged plankton blooms and fewer desiccation episodes would have prevailed. The Ratner Formation is interpreted to have formed during the transitional phase of the Elk Point Basin from a reefal environment to a large intracratonic salina. 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 machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,001 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,003 | 0,006 |
| Études des sciences et des technologies | 0,001 | 0,000 |
| Communication savante | 0,001 | 0,000 |
| Science ouverte | 0,001 | 0,001 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,006 | 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 source (Gemma direct ou Codex distillé), 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 ».