Evolution of the northern Cordilleran foreland basin during the middle Cretaceous
Bibliographic record
Abstract
Research Article| March 01, 2009 Evolution of the northern Cordilleran foreland basin during the middle Cretaceous Yongtai Yang; Yongtai Yang † 1Department of Geology, University of Toronto, 22 Russell Street, Toronto, Ontario M5S 3B1, Canada †E-mail: yongtai.yang@utoronto.ca Search for other works by this author on: GSW Google Scholar Andrew D. Miall Andrew D. Miall 1Department of Geology, University of Toronto, 22 Russell Street, Toronto, Ontario M5S 3B1, Canada Search for other works by this author on: GSW Google Scholar GSA Bulletin (2009) 121 (3-4): 483–501. https://doi.org/10.1130/B26374.1 Article history received: 19 Nov 2007 rev-recd: 12 Jun 2008 accepted: 18 Jun 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; Evolution of the northern Cordilleran foreland basin during the middle Cretaceous. GSA Bulletin 2009;; 121 (3-4): 483–501. doi: https://doi.org/10.1130/B26374.1 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 SocietyGSA Bulletin Search Advanced Search Abstract A detailed study of the middle–late Cenomanian Belle Fourche Formation in southern Alberta helps to elucidate the evolution of the Cordilleran foreland basin during the middle Cretaceous. By combining isopach data from the study area with previously published research on middle Cretaceous stratigraphy in adjacent areas of northern Alberta and Montana, it is possible to define the position of the proximal foredeep, fore-bulge, and backbulge depozones from late Albian to Cenomanian time.The foredeep probably lay to the west of the present fold-thrust belt in western Montana from the late Albian to middle Cenomanian, with the forebulge extending northwestward through the northwest corner of Wyoming and curving northeastward through the present-day location of Calgary. Thick Dunvegan deposits (middle Cenomanian) of northwestern Alberta are interpreted as foredeep deposits. Palinspastic reconstruction of the southern Rocky Mountains of Alberta is consistent with a location of the foredeep within the area of the present fold-thrust belt.At the end of the middle Cenomanian the forebulge retreated westward within Alberta, defining a nearly straight northwest-southeast trend through the present position of the Foothills and Front Ranges of Alberta and northwestern Montana. The change in trend of the foreland basin at the end of the middle Cenomanian may reflect the change of convergence vectors along the western margin of North America during the middle Cretaceous. 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 machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.000 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.004 | 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 source (direct Gemma or distilled Codex), 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".