Late Permian Sedimentation in the Sverdrup Basin, Canadian Arctic: The Lindstrom and Black Stripe Formations
Bibliographic record
Abstract
Research Article| June 01, 2009 Late Permian Sedimentation in the Sverdrup Basin, Canadian Arctic: The Lindström and Black Stripe Formations Benoit Beauchamp; Benoit Beauchamp Arctic Institute of North America and Department of Geoscience University of Calgary 2500 University Drive NW, Calgary, AB T2N 1N4, bbeaucha@ucalgary.ca Search for other works by this author on: GSW Google Scholar Charles M. Henderson; Charles M. Henderson Department of Geoscience University of Calgary 2500 University Drive NW, Calgary, AB T2N 1N4, charles.henderson@ucalgary.ca Search for other works by this author on: GSW Google Scholar Stephen E. Grasby; Stephen E. Grasby Geological Survey of Canada - Calgary Natural Resources Canada 3303 33rd Street NW, Calgary, AB T2L 2A7, sgrasby@nrcan.gc.ca Search for other works by this author on: GSW Google Scholar Laura T. Gates; Laura T. Gates Chevron North America Exploration and Production Company 100 Northpark Boulevard Covington, LA 70433, USA, LauraGates@chevron.com Search for other works by this author on: GSW Google Scholar Tyler W. Beatty; Tyler W. Beatty Department of Geoscience University of Calgary 2500 University Drive NW, Calgary, AB T2N 1N4, tbeatty@ucalgary.ca Search for other works by this author on: GSW Google Scholar John Utting; John Utting Geological Survey of Canada - Calgary Natural Resources Canada 3303 33rd Street NW, Calgary, AB T2L 2A7, jutting@nrcan.gc.ca Search for other works by this author on: GSW Google Scholar Noel P. James Noel P. James Department of Geological Sciences Queens University Kingston, ON K7L 3N6, james@geol.queensu.ca Search for other works by this author on: GSW Google Scholar Author and Article Information Benoit Beauchamp Arctic Institute of North America and Department of Geoscience University of Calgary 2500 University Drive NW, Calgary, AB T2N 1N4, bbeaucha@ucalgary.ca Charles M. Henderson Department of Geoscience University of Calgary 2500 University Drive NW, Calgary, AB T2N 1N4, charles.henderson@ucalgary.ca Stephen E. Grasby Geological Survey of Canada - Calgary Natural Resources Canada 3303 33rd Street NW, Calgary, AB T2L 2A7, sgrasby@nrcan.gc.ca Laura T. Gates Chevron North America Exploration and Production Company 100 Northpark Boulevard Covington, LA 70433, USA, LauraGates@chevron.com Tyler W. Beatty Department of Geoscience University of Calgary 2500 University Drive NW, Calgary, AB T2N 1N4, tbeatty@ucalgary.ca John Utting Geological Survey of Canada - Calgary Natural Resources Canada 3303 33rd Street NW, Calgary, AB T2L 2A7, jutting@nrcan.gc.ca Noel P. James Department of Geological Sciences Queens University Kingston, ON K7L 3N6, james@geol.queensu.ca Publisher: Canadian Society of Petroleum Geologists Received: 26 Sep 2008 Accepted: 14 May 2009 First Online: 02 Mar 2017 Online ISSN: 2368-0261 Print ISSN: 0007-4802 © The Society of Canadian Petroleum Geologists Bulletin of Canadian Petroleum Geology (2009) 57 (2): 167–191. https://doi.org/10.2113/gscpgbull.57.2.167 Article history Received: 26 Sep 2008 Accepted: 14 May 2009 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 Benoit Beauchamp, Charles M. Henderson, Stephen E. Grasby, Laura T. Gates, Tyler W. Beatty, John Utting, Noel P. James; Late Permian Sedimentation in the Sverdrup Basin, Canadian Arctic: The Lindström and Black Stripe Formations. Bulletin of Canadian Petroleum Geology 2009;; 57 (2): 167–191. doi: https://doi.org/10.2113/gscpgbull.57.2.167 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 Contrary to a long-held belief, Upper Permian strata are present in the Sverdrup Basin of Arctic Canada, and a nearly continuous conformable record with the overlying Blind Fiord Formation occurs in the basin central area. Upper Permian strata are dominated by spiculitic chert, the bulk of which is part of a Wuchiapingian unconformity-bounded transgressive-regressive sequence, one of four sequences that encompass the Middle Permian to Lower Triassic interval. Two new stratigraphic units are here formally erected to better account for Upper Permian strata in the Sverdrup Basin. The Lindström Formation is a unit of white to pale grey spiculitic chert that represents sedimentation on a shallow, open marine, wave- and storm-dominated ramp. The Black Stripe Formation, which is in part correlative with the Lindström Formation, comprises black to dark grey spiculitic chert associated with siliceous shale and siltstone of slope to basinal origin. The upper part of the Black Stripe Formation comprises a deepening-upward succession of black cherty siltstone and siliceous shale that recorded Changhsingian sedimentation. The basal Blind Fiord contact which coincides with the Latest Permian Extinction event in the Sverdrup Basin is marked by an unusual abundance of pyrite, a hallmark of the extinction horizon around the world. A hiatus associated with maximum flooding and condensation exist across the Black Stripe-Blind Fiord contact in distal settings. However, a seemingly rapid, yet progressive carbon isotopic shift suggests minimal stratigraphic interruption. The Late Permian age of the Lindström and Black Stripe formations is substantiated by conodont biostratigraphy and carbon isotope chemostratigraphy. Late Changhsingian conodonts were recovered from the base of the Blind Fiord Formation, while Hindeodus parvus, the species that marks the base of the Triassic at the GSSP in China, and associated conodont assemblages, occurs a few tens of metres above the base of the Blind Fiord Formation. Black shale in the Lindström and correlative Black Stripe Formation may have a source potential as shown by high TOC values and preliminary RockEval analysis. 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 | 0.000 | 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) | 0.001 | 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".