The glacial and Holocene history of Notre Dame Trough, Northeast Newfoundland Shelf
Bibliographic record
Abstract
This study was conducted on the Notre Dame Trough (NDT) on the Northeast Newfoundland Shelf.The purpose of this project was to help unravel the glacial history, including the timing of a large slide block in the NDT, and to compare the late Quaternary sedimentary record in cores with other places on the Newfoundland margin.Air gun seismic and Olex bathymetry were used to determine that some features present in the NDT are glaciotectonic in origin, and likely formed during the Wisconsinan.A large slide block present in the NDT was analyzed using seismic survey data and downcore shear strength data and showed that this slide block likely post-dates the glaciotectonic deformation.The physical properties of thirteen piston cores and chemical properties of five of the cores were analyzed to classify four main sediment units.Knudsen 3.5 kHz seismic data were used to determine the sedimentary context of the cores.Carbon-14 dates from these cores provide age control for changes in sediment supply and paleoceanographic events such as Heinrich events with high supply of detrital carbonate.The variation in sediment source in the study area indicates that the NDT was largely unaffected by the Labrador current for some time before 14 ka.Correlations between the cores of this study and those of Flemish Pass and Cartwright Saddle have compared the paleoceanographic records and show that Heinrich-0 (ca. 12 ka) can be correlated between NDT, Flemish Pass and Cartwright Saddle.However, based on Carbon-14 dates, Heinrich-1 is not marked by a detrital carbonate layer in Notre Dame Trough.A red mud bed correlated between several cores may represent a synchronous meltwater discharge event from ice in St Anthony Basin.
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 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 | 0.001 |
| 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) | 0.003 | 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".