Sill-dominated clastic intrusions sourced from adjacent deep-water submarine channels: Geometry and emplacement models (Isaac Formation, Neoproterozoic Windermere supergroup, Southern Canadian Cordillera)
Bibliographic record
Abstract
Recently outcrop and seismic examples of postdepositionally mobilized sediment (injections) have become increasingly recognized, and commonly occur as bedding-discordant dikes. In strata of the Neoproterozoic Windermere Supergroup, however, injections are dominated by coarse-grain, bedding-concordant sills (<2.5 m thick) that typically intrude thin-bedded turbidites. Sills are most common at the bases of coarse-grained channel fills where they form sharply-bounded, fingerlike projections that taper and eventually pinch out over horizontal scales of several meters to 50 meters. Almost invariably the intrusion fill consists of poorly-sorted, very coarse sandstone with dispersed granules. Generally grain size varies little along the length of the sill, but near its terminus fines rapidly. Mudstone clasts are common immediately adjacent to the channel-fill margin, but decrease rapidly in abundance and size laterally. Intrusions are interpreted to be the result of short-lived, catastrophic fluidization of shallowly-buried channel-fill sediment. Initially pore-fluid pressures in the sand/gravel channel deposits were probably elevated by the influx of fluid expelled from adjacent, compacting, mud-rich, thin-bedded turbidites. Later, pore pressures became significantly elevated, in some cases by the instantaneous loading of overlying debris-flow deposits. Sand and granules most probably intruded adjacent strata as a network of coalescing elements that in many places completely surrounded and isolated “clasts” of thin-bedded strata (in-situ brecciation). Further away from their sediment source (i.e. channel fill) intrusions preferentially intruded along sand-rich layers in the thin-bedded turbidites, and then thinned rapidly and terminated. Although dikes are uncommon, these sill-dominated intrusion complexes may connect adjacent channel-fill deposits and enhance channel reservoir connectivity.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.001 | 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) | 0.008 | 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".