Un estran argileux à dallages et cordons de blocs caractéristique de l'estuaire maritime du Saint-Laurent (Québec, Canada)
Bibliographic record
Abstract
À Saint-Simon-sur-Mer, sur la rive sud de l’estuaire maritime du Saint-Laurent,\nl’estran argileux est en grande partie recouvert par des dallages et des cordons de blocs de taille,\nde forme et de nature variées. Représentatif d’une large portion du littoral des deux rives de\nl’estuaire, cet estran est ici caractérisé pour son originalité. La nature lithologique des cailloux\ncomprend des éléments locaux ainsi que des erratiques lointains provenant des Appalaches, au\nsud, et du Bouclier laurentidien, au nord. Ces derniers ont d’abord été déplacés vers la vallée\ndu Saint-Laurent par les glaciers du Wisconsinien (Weichselien) avant d’être transportés et\ndélestés dans la mer postglaciaire (Mer de Goldthwait) par des icebergs et des radeaux de glace\nannuelle. Certains erratiques, dont les cailloux de dolomie à stromatolites d’âge Protérozoïque,\nont été déplacés sur des distances excédant 400 km. L’érosion des dépôts argileux en bordure\ndes crêtes rocheuses appalachiennes longeant le littoral à Saint-Simon-sur-Mer a laissé derrière\nla fraction grossière. Les cailloux ont, par la suite, été concentrés par les glaces annuelles, dans\nla zone intertidale et infratidale adjacente, puis partiellement enfoncés dans le substrat argileux.\nIls forment aujourd’hui des dallages et des cordons. Par la suite, des apports locaux de blocs\nprovenant du démantèlement des crêtes rocheuses se sont ajoutés au résidu grossier (lag) laissé\nderrière par l’érosion de l’argile par les vagues et les courants. De nos jours, les dallages de\ncailloux forment une carapace qui entrave et retarde l’érosion du substrat argileux.\n\nA typical clayed tidal flat covered by boulder pavements, Lower St. Lawrence\nestuary (Québec, Canada). At Saint-Simon-sur-Mer along the south shore of the Lower\nSt.Lawrence estuary, the clayed tidal flat is largely covered by stone pavements and ridges of\nboulders of various sizes, forms, and lithologies. Common and typical feature of the shoreline\non both sides of the estuary, this kind of tidal flat is original. Boulder lithologies are mixed\nincluding far-distance erratics from the Appalachians and the Laurentidian Shield, and clasts\nfrom the nearby coastal area. Far-distance erratics were first transported to the St. Lawrence\nvalley by the Wisconsinan glaciers before being ice-rafted by icebergs and sea ice into the\npostglacial sea (Goldthwait Sea). Some erratics have been moved over 400 km. Erosion of the\ncoastal marine clay deposits during the Holocene produced boulder lags. The exhumed clasts\nwere subsequently moved and concentrated by shore ice in the tidal zone before being driven\ndown into the clayed substrate. They form today boulder pavements and ridges. Afterwards\nthere have been additions of local blocks from the Appalachian ridges bordering the south shore\nof the estuary at Saint-Simon-sur-Mer. Today, this boulder intertidal clayed substrate is largely\nprotected from erosion by waves and currents.
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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 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.003 |
| Science and technology studies | 0.004 | 0.001 |
| Scholarly communication | 0.002 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.010 | 0.001 |
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".