Lithofacies and depositional history of Midale carbonate-evaporite cycles in a Mississippian ramp setting, Steelman-Bienfait area, southeastern Saskatchewan, Canada
Bibliographic record
Abstract
Research Article| September 01, 2008 Lithofacies and depositional history of Midale carbonate-evaporite cycles in a Mississippian ramp setting, Steelman-Bienfait area, southeastern Saskatchewan, Canada Hairuo Qing; Hairuo Qing Department of Geology University of Regina Regina, SK S4S 0A2 Search for other works by this author on: GSW Google Scholar Andrew R. Nimegeers Andrew R. Nimegeers Department of Geology University of Regina Regina, SK S4S 0A2 1Present address: Caprice Resources Ltd., 312 – 2505 11th Avenue, Regina, SK S4P 0K6 Search for other works by this author on: GSW Google Scholar Author and Article Information Hairuo Qing Department of Geology University of Regina Regina, SK S4S 0A2 Andrew R. Nimegeers 1Present address: Caprice Resources Ltd., 312 – 2505 11th Avenue, Regina, SK S4P 0K6 Department of Geology University of Regina Regina, SK S4S 0A2 Publisher: Canadian Energy Geoscience Association Received: 10 Dec 2007 Accepted: 20 May 2008 First Online: 02 Mar 2017 Online ISSN: 2368-0261 Print ISSN: 0007-4802 © The Society of Canadian Petroleum Geologists Bulletin of Canadian Petroleum Geology (2008) 56 (3): 209–234. https://doi.org/10.2113/gscpgbull.56.3.209 Article history Received: 10 Dec 2007 Accepted: 20 May 2008 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Hairuo Qing, Andrew R. Nimegeers; Lithofacies and depositional history of Midale carbonate-evaporite cycles in a Mississippian ramp setting, Steelman-Bienfait area, southeastern Saskatchewan, Canada. Bulletin of Canadian Petroleum Geology 2008;; 56 (3): 209–234. doi: https://doi.org/10.2113/gscpgbull.56.3.209 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 Carbonate-evaporite cycles in the Mississippian (Osagean) Midale Beds of southeastern Saskatchewan were deposited over a shallow homoclinal ramp along the northern margin of the Williston Basin. Fourteen lithofacies, including nine limestone facies (C1 to C9), two dolostone facies (D1 and D2), and three anhydrite facies (A1 to A3), were identified from cores (46 wells) and geophysical well logs (750 wells) in the Steelman-Bienfait area. These lithofacies represent a range of subtidal to supratidal settings and are interpreted to be related to four transgressive-regressive parasequences (S1 to S4, in ascending order). Paleosols and microkarst features (T1) characterize parasequence boundaries and provide evidence for subaerial exposure.Oolitic grainstones and packstones were deposited as shore-parallel, shoals and barrier islands in the S2 and S3 parasequences along the western margin of the Steelman and Bienfait oilfields. Paleotopographic hinge-zones were an important control on the distribution of shoals, lagoons, algal marsh sediments, salinas and algal/ostracod mounds. Abrupt thickness changes and lateral, carbonate-evaporite facies transitions were observed across the hinge-zones.Facies distributions in the Midale Beds were related to sea level fluctuations, paleotopography, and the availability of accommodation space. Minor sea level fluctuations in this shallow ramp setting resulted in major lateral shifting of facies, significant migration of the paleocoastline, and periodic exposure of the upper to middle ramp environments, producing stratigraphic traps as exploration targets, in addition to the traditional sub-crop “plays” in the study area. 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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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".