Marine transgressions in the mid-Cretaceous of the Cordilleran foreland basin re-interpreted as orogenic unloading deposits
Bibliographic record
Abstract
Research Article| September 01, 2008 Marine transgressions in the mid-Cretaceous of the Cordilleran foreland basin re-interpreted as orogenic unloading deposits Yongtai Yang; Yongtai Yang Department of Geology, University of Toronto, 22 Russell Street, Toronto, ON M5S 3B1, yongtai.yang@utoronto.ca Search for other works by this author on: GSW Google Scholar Andrew D. Miall Andrew D. Miall Department of Geology, University of Toronto, 22 Russell Street, Toronto, ON M5S 3B1, miall@geology.utoronto.ca Search for other works by this author on: GSW Google Scholar Bulletin of Canadian Petroleum Geology (2008) 56 (3): 179–198. https://doi.org/10.2113/gscpgbull.56.3.179 Article history received: 12 Mar 2008 accepted: 06 May 2008 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 Yongtai Yang, Andrew D. Miall; Marine transgressions in the mid-Cretaceous of the Cordilleran foreland basin re-interpreted as orogenic unloading deposits. Bulletin of Canadian Petroleum Geology 2008;; 56 (3): 179–198. doi: https://doi.org/10.2113/gscpgbull.56.3.179 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 A detailed stratigraphic and sedimentologic study of the Early Cenomanian Fish Scales Formation and the Barons Sandstone in southern Alberta, based on detailed core measurement and well log correlation, was undertaken in order to assess the principal controlling factors on the mid-Cretaceous stratigraphic fill of the Cordilleran foreland basin. Fine-grained units in the basin, such as the Fish Scales Formation (Mowry equivalent) and the Early Turonian Second White Specks Formation (Greenhorn equivalent), have traditionally been attributed to deposition during episodes of high eustatic sea levels. However, facies, allostratigraphy, and isopach patterns of the latest Albian Westgate, Fish Scales, mid–late Cenomanian Belle Fourche and Second White Specks formations in southern Alberta suggest that strata were deposited alternately during orogenic loading periods and unloading periods. We interpreted the Fish Scales Formation, a deposit formed during the marine transgression of the Mowry Seaway in the latest Albian–earliest Cenomanian, to have been deposited in a wide shallow interior seaway during an orogenic unloading period. The Barons Sandstone, interbedded with the mudstone of the Fish Scales Formation, is interpreted as a regressive shoreface, distributary channel and barrier island sandstone deposited during the unloading period. We also tentatively interpreted the Second White Specks Formation, a regional stratigraphic marker deposited during the so-called peak eustatic sea level in the Early Turonian, to have been deposited in a wide shallow interior seaway during a period of regional orogenic unloading. This study questions the significance of the Mowry Shale and Greenhorn Formation as indicators of eustatic highstands of sea level, and suggests regional tectonism as the primary control on basin evolution. 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 | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.008 | 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".