The Werner Lake Co-Cu-Au Deposit of the English RiverSubprovince, Ontario, Canada: Evidence for an Exhalative Origin and Effectsof Granulite Facies Metamorphism
Notice bibliographique
Résumé
Research Article| December 01, 2000 The Werner Lake Co-Cu-Au Deposit of the English River Subprovince, Ontario, Canada: Evidence for an Exhalative Origin and Effects of Granulite Facies Metamorphism Yuanming Pan; Yuanming Pan Department of Geological Sciences, University of Saskatchewan, Saskatoon, Canada S7N 5E2 †Corresponding author: e-mail, yuanming.pan@usask.ca Search for other works by this author on: GSW Google Scholar Craig Therens Craig Therens Department of Geological Sciences, University of Saskatchewan, Saskatoon, Canada S7N 5E2 Search for other works by this author on: GSW Google Scholar Author and Article Information Yuanming Pan Department of Geological Sciences, University of Saskatchewan, Saskatoon, Canada S7N 5E2 Craig Therens Department of Geological Sciences, University of Saskatchewan, Saskatoon, Canada S7N 5E2 †Corresponding author: e-mail, yuanming.pan@usask.ca Publisher: Society of Economic Geologists Received: 08 Mar 2000 Accepted: 22 Jun 2000 First Online: 02 Mar 2017 Online ISSN: 1554-0774 Print ISSN: 0361-0128 Economic Geology Economic Geology (2000) 95 (8): 1635–1656. https://doi.org/10.2113/gsecongeo.95.8.1635 Article history Received: 08 Mar 2000 Accepted: 22 Jun 2000 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Yuanming Pan, Craig Therens; The Werner Lake Co-Cu-Au Deposit of the English River Subprovince, Ontario, Canada: Evidence for an Exhalative Origin and Effects of Granulite Facies Metamorphism. Economic Geology 2000;; 95 (8): 1635–1656. doi: https://doi.org/10.2113/gsecongeo.95.8.1635 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 SocietyEconomic Geology Search Advanced Search Abstract The Werner Lake Co-Cu-Au deposit is confined to a mixed unit of orthopyroxene- bearing amphibolites, ultramafic rocks, garnetiferous biotite schists, calc-silicate rocks, and garnet-rich quartzites. Mineralization includes disseminated sulfides in the garnetiferous biotite schists and semimassive-massive cobaltite-rich orebodies. Field relationships and geochemical data suggest that the garnetiferous biotite schists were most likely derived from amphibolites, whereas the calc-silicate rocks and garnet-rich quartzites probably represent metamorphosed exhalites. Mass changes for the formation of the garnetiferous biotite schists include gains in Fe, Mn, and K but loses in Ca and Na. The garnetiferous biotite schists are also characterized by depletion in whole-rock δ18O values (4–6.5‰ V-SMOW) relative to the associated amphibolites (6.8–8.3‰) and ultramafic rocks (5.6–6.6‰), which is interpreted as an indication of high- temperature interactions with seawater. Near zero d34S values of cobaltite and sulfides indicate a juvenile source for S. These data and similarities to strata-bound Co-Cu and Cu-Co deposits suggest that the Werner Lake deposit most likely formed from syngenetic exhalative processes.The granulite facies metamorphism (680°–780°C, 4.5–6.6 kbars, and aH2O of 0.12–0.25) at the Werner Lake deposit was accompanied by penetrative deformation and was followed by retrogression and late hydrothermal alteration. However, high-grade metamorphism and deformation did not obliterate the primary metal and alteration zonation in the Werner Lake deposit. We attribute this preservation of primary features to the dry character of the granulite facies metamorphism. This is supported by the preservation of contrasting oxygen isotope signatures in the ores and associated lithologies. Localized, solid-state remobilization of cobaltite-rich ores is indicated by the presence of durchbewegung textures, the alignment of cobaltite porphyroblasts parallel to the S2 foliation and thickening of cobaltite-rich orebodies close to F2 fold hinges. Chalcopyrite-rich veins with biotite-rich selvages suggest a local, fluid- facilitated remobilization during retrogression. Granulite facies metamorphism, deformation, and subsequent retrogression might have locally upgraded the cobaltite-rich ores. Late hydrothermal alteration did not significantly affect the Co mineralization in the Werner Lake deposit. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,001 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,004 | 0,000 |
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 tête enseignante, 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 ».