Facies Architecture and Ichnology of Recent Salt-Marsh Deposits: Waterside Marsh, New Brunswick, Canada
Bibliographic record
Abstract
Abstract Identification of salt-marsh deposits in the rock record can aid in the paleoenvironmental reconstructions of ancient marginal-marine successions. Salt-marsh sediments exposed at Waterside Beach and in Waterside Marsh alongside the Bay of Fundy, Canada offer an opportunity to describe and define facies and facies associations in a temperate, mineralogenic salt marsh. Three facies associations are identified and represent the three main components of the Waterside Marsh–Beach depositional system. Facies Association (FA) 1 includes genetically related deposits that accumulate on the salt-marsh surface, FA2 comprises sediments deposited within the naturally formed tidal creeks, and FA3 encompasses sediments derived from the adjacent coarse-grained beach. Facies Associations 1 to 3 respectively comprise 3, 4, and 2 sedimentologically and ichnologically distinct facies. Application of these facies and facies associations to the rock record is dependent upon the preservation potential of the facies and the relative sea level (RSL) regime of the system. RSL in the Bay of Fundy is presently rising. This results in transgression of Waterside Beach and erosion of the upper 4 to 5 m of salt-marsh sediment at the beach-marsh interface. Consequently, the probability of sediments being preserved increases with distance from the seaward limit of the marsh and with depth. Sediments deposited on the salt-marsh surface well away from the seaward edge of the marsh (FA1) and those deposited at the base of the tidal creeks (FA2) have a high probability of being preserved. Conversely, the coarse-grained clastic sediments of FA3 deposited near the seaward edge of the marsh will likely be eroded.
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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 | 0.001 | 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 | 0.001 |
| Insufficient payload (model declined to judge) | 0.001 | 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".