Bibliographic record
Abstract
The B.C. Rockies are part of the Cordilleran foreland thrust and fold belt formed along the western edge of the Laurentian craton during the Jurassic and Tertiary as the Laurentian craton moved relatively westward into terranes now comprising the Intermontane Belt. The B.C. Rockies comprise a series of thrust slices of mainly sedimentary strata carried northeastward above a basal detachment and crystalline basement. Over 250 km of shortening occurred by fault displacement, folding and cleavage formation. Most of the shortening occurred as large displacements along a small number of large thrust faults. Thrust faults in the western part of the B.C. Rockies moved prior to the mid-Cretaceous (108 Ma), whereas the most eastern major thrust in the B.C. Rockies started to move at 72 Ma. Four main tectonostratigraphic assemblages comprise the B.C. Rockies. 1) The MesoProterozoic Belt-Purcell assemblage (1500- 1400 Ma) accumulated in a deep (15-20 km) intercontinental rift basin. This basin forms one of the main metallogenic provinces in North America with numerous mines, prospects, and showings. 2) The Neoproterozoic Windermere assemblage (750- 600 Ma) accumulated to thicknesses of a few kilometers in a rift-basin that truncated but also partially overlapped the Belt-Purcell basin. It has been interpreted as both an intracontinental rift and as the eastern margin of the proto-Pacific ocean basin. In the B.C. Rockies it has little known economic potential. 3) Eocambrian to Middle Jurassic (600- 180 Ma) assemblage of the Cordilleran miogeocline and cratonic platform assemblage. Important paleogeographic elements developed during Cambrian rifting influenced the thickness and facies of sedimentation and had an important effect on localizing mineralization in Cambrian and Devonian strata as well as the distribution of economically important Middle Devonian gypsum deposits. 4) The Late Jurassic to Upper Cretaceous Cordilleran foreland basin deposits accumulated in front of the northeastward prograding deforming wedge, as the weight of the wedge caused the underlying continental lithosphere to subside. In the B.C. Rockies these strata were incorporated into the thrust and fold belt and cannibalized. Thick coal developed in the Early Cretaceous form an important energy resource in the B.C. Rockies. Tectonic inheritance from the underlying Paleoproterozoic crystalline basement affected sedimentation and economic potential in most of the assemblages. Displacement above the basal detachment caused inversion of the original sedimentary basins. Major broad regional structural culminations and depressions that are evident at the 1: 2,000,000 scale of the tectonoassemblage map of the Canadian Cordillera correspond to the restored positions of the rifted margins of the three older assemblages. Intrusions form a small but important component of the B.C. Rockies. The Mississippian Ice River Complex, Paleozoic diatremes and Cretaceous intrusions have economic potential. Intrusions plugging faults show that deformation of the B.C. Rockies had reached the east side of the Rocky Mountain Trench by the mid-Cretaceous.
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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) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.008 | 0.008 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.003 | 0.002 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.010 | 0.005 |
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".