Litho- and biofacies analyses of the Buckinghorse Formation: the Albian Western Interior Sea in northeastern British Columbia (Canada)
Bibliographic record
Abstract
Research Article| September 01, 2003 Litho- and biofacies analyses of the Buckinghorse Formation: the Albian Western Interior Sea in northeastern British Columbia (Canada) Claudia J. Schröder-Adams; Claudia J. Schröder-Adams Dept. of Earth Sciences, Carleton University, 1125 Colonel By Drive, Ottawa, ON K1S 5B6 Search for other works by this author on: GSW Google Scholar Per Kent Pedersen Per Kent Pedersen Petroleum Geology, Saskatchewan Industry and Resources, 201 Dewdney Avenue East, Regina, SK S4N 4G3 Search for other works by this author on: GSW Google Scholar Author and Article Information Claudia J. Schröder-Adams Dept. of Earth Sciences, Carleton University, 1125 Colonel By Drive, Ottawa, ON K1S 5B6 Per Kent Pedersen Petroleum Geology, Saskatchewan Industry and Resources, 201 Dewdney Avenue East, Regina, SK S4N 4G3 Publisher: Canadian Energy Geoscience Association Received: 19 Jun 2002 Accepted: 24 Jul 2003 First Online: 02 Mar 2017 Online ISSN: 2368-0261 Print ISSN: 0007-4802 © The Society of Canadian Petroleum Geologists Bulletin of Canadian Petroleum Geology (2003) 51 (3): 234–252. https://doi.org/10.2113/51.3.234 Article history Received: 19 Jun 2002 Accepted: 24 Jul 2003 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Claudia J. Schröder-Adams, Per Kent Pedersen; Litho- and biofacies analyses of the Buckinghorse Formation: the Albian Western Interior Sea in northeastern British Columbia (Canada). Bulletin of Canadian Petroleum Geology 2003;; 51 (3): 234–252. doi: https://doi.org/10.2113/51.3.234 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 During Albian time the Western Interior Sea formed an embayment of the northern Boreal Sea and paleogeography, depositional processes and relative sea level were controlled by a global sea level rise and active thrusting within the Cordillera. Along the Sikanni Chief River in northeastern British Columbia, the Buckinghorse Formation is exposed as an over 1000 m thick marine mudstone package that was deposited in the western foredeep of the Western Canada Sedimentary Basin. The section appears lithologically relatively uniform, however, close examination allowed recognition of seven lithofacies responding to subtle changes in shelf to upper offshore depositional environments. On regional wireline log cross-sections seven major flooding surfaces that subdivide the Buckinghorse Formation into six depositional sequences are widely correlative. These are independent from lithofacies. A new informal foraminiferal subzonation is proposed and correlated to the existing standard zonation based mainly on the intensely studied Peace River region to the south. In the northern continuous offshore setting foraminiferal assemblages responded with gradual faunal changeover. Each marine transgression brought new, mainly Boreal taxa to the basin. The "Viking" marker, described and faunally distinguished in the Hudson Hope area within the Hasler shale, is identified in the Sikanni Chief River area as a distinct silt to fine sandstone interval with a change from the Haplophragmoides gigas Zone to the Miliammina manitobensis Zone. On well logs this horizon is a major flooding surface, correlated with the top of the Paddy Member. 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 | 0.004 | 0.007 |
| Science and technology studies | 0.002 | 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) | 0.003 | 0.001 |
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".