Environmental and Substrate Control on Paleozoic Bioerosion in Corals and Stromatoporoids, Anticosti Island, Eastern Canada
Notice bibliographique
Résumé
Other| June 01, 2004 Environmental and Substrate Control on Paleozoic Bioerosion in Corals and Stromatoporoids, Anticosti Island, Eastern Canada LEIF TAPANILA; LEIF TAPANILA 1Department of Earth Sciences, Laurentian University, Sudbury, Ontario, P3E 2C6, Canada,ltapanila@mines.utah.edu *Current Address: Department of Geology and Geophysics, University of Utah, 135 South, 1460 East, Room 719, Salt Lake City, UT, 84112-0111. Search for other works by this author on: GSW Google Scholar PAUL COPPER; PAUL COPPER 1Department of Earth Sciences, Laurentian University, Sudbury, Ontario, P3E 2C6, Canada,ltapanila@mines.utah.edu Search for other works by this author on: GSW Google Scholar EVAN EDINGER EVAN EDINGER 1Department of Earth Sciences, Laurentian University, Sudbury, Ontario, P3E 2C6, Canada,ltapanila@mines.utah.edu **Current address: Department of Geography, Memorial University of Newfoundland, St. John's, Newfoundland, A1B 3X9, Canada. Search for other works by this author on: GSW Google Scholar Author and Article Information LEIF TAPANILA *Current Address: Department of Geology and Geophysics, University of Utah, 135 South, 1460 East, Room 719, Salt Lake City, UT, 84112-0111. 1Department of Earth Sciences, Laurentian University, Sudbury, Ontario, P3E 2C6, Canada,ltapanila@mines.utah.edu PAUL COPPER 1Department of Earth Sciences, Laurentian University, Sudbury, Ontario, P3E 2C6, Canada,ltapanila@mines.utah.edu EVAN EDINGER **Current address: Department of Geography, Memorial University of Newfoundland, St. John's, Newfoundland, A1B 3X9, Canada. 1Department of Earth Sciences, Laurentian University, Sudbury, Ontario, P3E 2C6, Canada,ltapanila@mines.utah.edu Publisher: SEPM Society for Sedimentary Geology Accepted: 15 Dec 2003 First Online: 03 Mar 2017 Online ISSN: 1938-5323 Print ISSN: 0883-1351 Society for Sedimentary Geology PALAIOS (2004) 19 (3): 292–306. https://doi.org/10.1669/0883-1351(2004)019<0292:EASCOP>2.0.CO;2 Article history Accepted: 15 Dec 2003 First Online: 03 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation LEIF TAPANILA, PAUL COPPER, EVAN EDINGER; Environmental and Substrate Control on Paleozoic Bioerosion in Corals and Stromatoporoids, Anticosti Island, Eastern Canada. PALAIOS 2004;; 19 (3): 292–306. doi: https://doi.org/10.1669/0883-1351(2004)019<0292:EASCOP>2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyPALAIOS Search Advanced Search Abstract Bioerosion was a common process affecting corals and stromatoporoids in reef and off-reef facies on the carbonate ramp that spanned the Ordovician–Silurian boundary on Anticosti Island. The probable worm boring Trypanites was the dominant macroboring, penetrating more than 40% of 2,500 massive tabulate corals and stromatoporoids examined, occasionally in dense concentrations. The frequency of macroboring was influenced by conditions at the facies level reflected by changes in grain size, water depth, storm reworking of sediments, and the nature of the skeletal mass bored. These factors regulated exposure time of the host-substrate surface to the watermass and thus influenced bioerosion. Bored specimens are most common in muddy off-reef facies, moderate in sandy off-reef facies, and less common in reefs. In off-reef facies, storm-enhanced deposition and reworking of sediments were most important in the burial of eligible host substrates. In reefs, the high competition for space by encrusting epizoans, combined with sedimentation, limited macroborers that preferred to excavate dead skeletal substrates. Skeletal density was the most important property of the host substrate in controlling boring frequency. Macroborers favored a dense host skeleton likely for its enhanced mechanical strength and adaptability for unlined borings, despite requiring greater energy for excavation. High-relief host skeletons were bored more frequently than tabular forms, since their greater capacity to shed sediment would have resulted in more prolonged exposure above the seafloor. The probable bivalve boring Petroxestes pera is rare. Temporal changes in boring frequency appear to reflect local shifts in facies and relative sea level. Mass-extinction events near the O/S boundary, which eliminated some host corals and stromatoporoids, had no apparent effect on boring frequency. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
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Comment cette classification a été obtenuedéplier
Prédiction machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,001 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,004 | 0,009 |
| Études des sciences et des technologies | 0,002 | 0,000 |
| Communication savante | 0,002 | 0,000 |
| Science ouverte | 0,001 | 0,001 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,011 | 0,001 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule source (Gemma direct ou Codex distillé), pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».