Transportation and deposition of magnetite and gold in Harris Creek, south-central British Columbia
Bibliographic record
Abstract
Although previous studies have indicated the importance of flood events in the mobilization, transport and deposition of gold by streams, there have been no estimates of actual transport rates of sediment and gold as discharge varies both within and between years. Here, we use Helley–Smith bed load samples from Harris Creek, a gold-rich gravel-cobble bed stream in British Columbia, to develop equations of the form R i = a Q b that relate transport rates ( R i ) of sediment, magnetite and gold to discharge ( Q ). These equations have then been used to estimate the amounts of sediment, magnetite and gold transported by Harris Creek in 1991, 1992 and 1993. Results show that the amount of material transported can vary by up to three orders of magnitude from year to year depending on the magnitude and duration of the snowmelt flood. Combined with the preferential deposition of Au at bar-head sites, it seems likely these large annual variations in the amount of Au transported result in similar year-to-year variations in the strength of stream sediment geochemical anomalies for Au.
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 | 0.000 | 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) | 0.004 | 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 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".