Fluid evolution and diagenesis of a Carboniferous channel sandstone in the Prince Colliery, Nova Scotia, Canada
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Résumé
Research Article| June 01, 2000 Fluid evolution and diagenesis of a Carboniferous channel sandstone in the Prince Colliery, Nova Scotia, Canada M.R. Gibling; M.R. Gibling Department of Earth Sciences, Dalhousie University, Halifax, NS, B3H3J5 1mgibling@is.dal.ca Search for other works by this author on: GSW Google Scholar A.T. Martel; A.T. Martel Department of Earth Sciences, Dalhousie University, Halifax, NS, B3H3J5 2Present address: Corridor Resources Inc., 301 Cornwallis House, 5475 Spring Garden Rd., Halifax, NS B3J 3T2 Search for other works by this author on: GSW Google Scholar M.H. Nguyen; M.H. Nguyen Department of Earth Sciences, Dalhousie University, Halifax, NS, B3H3J5 Search for other works by this author on: GSW Google Scholar A.M. Kennedy; A.M. Kennedy Department of Earth Sciences, Dalhousie University, Halifax, NS, B3H3J5 Search for other works by this author on: GSW Google Scholar J. Shimeld; J. Shimeld Geological Survey of Canada (Atlantic), Box 1006, Dartmouth, NS, B2Y 4A2 Search for other works by this author on: GSW Google Scholar F. Baechler; F. Baechler ADI Limited, P.O. Box 1688, Sydney, NS B1P 6R7 Search for other works by this author on: GSW Google Scholar S. Forgeron; S. Forgeron Cape Breton Development Corporation, P.O. Box 2500, Sydney, NS ,B1P 6K9 Search for other works by this author on: GSW Google Scholar B. Mackenzie B. Mackenzie Cape Breton Development Corporation, P.O. Box 2500, Sydney, NS ,B1P 6K9 Search for other works by this author on: GSW Google Scholar Author and Article Information M.R. Gibling 1mgibling@is.dal.ca Department of Earth Sciences, Dalhousie University, Halifax, NS, B3H3J5 A.T. Martel 2Present address: Corridor Resources Inc., 301 Cornwallis House, 5475 Spring Garden Rd., Halifax, NS B3J 3T2 Department of Earth Sciences, Dalhousie University, Halifax, NS, B3H3J5 M.H. Nguyen Department of Earth Sciences, Dalhousie University, Halifax, NS, B3H3J5 A.M. Kennedy Department of Earth Sciences, Dalhousie University, Halifax, NS, B3H3J5 J. Shimeld Geological Survey of Canada (Atlantic), Box 1006, Dartmouth, NS, B2Y 4A2 F. Baechler ADI Limited, P.O. Box 1688, Sydney, NS B1P 6R7 S. Forgeron Cape Breton Development Corporation, P.O. Box 2500, Sydney, NS ,B1P 6K9 B. Mackenzie Cape Breton Development Corporation, P.O. Box 2500, Sydney, NS ,B1P 6K9 Publisher: Canadian Energy Geoscience Association Received: 21 Apr 1999 Accepted: 06 Jan 2000 First Online: 02 Mar 2017 Online ISSN: 2368-0261 Print ISSN: 0007-4802 © The Society of Canadian Petroleum Geologists Bulletin of Canadian Petroleum Geology (2000) 48 (2): 95–115. https://doi.org/10.2113/48.2.95 Article history Received: 21 Apr 1999 Accepted: 06 Jan 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 M.R. Gibling, A.T. Martel, M.H. Nguyen, A.M. Kennedy, J. Shimeld, F. Baechler, S. Forgeron, B. Mackenzie; Fluid evolution and diagenesis of a Carboniferous channel sandstone in the Prince Colliery, Nova Scotia, Canada. Bulletin of Canadian Petroleum Geology 2000;; 48 (2): 95–115. doi: https://doi.org/10.2113/48.2.95 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 SocietyBulletin of Canadian Petroleum Geology Search Advanced Search Abstract The subsea Prince Colliery of the Sydney Basin extracts coal at depths up to 330 m below sea level from beneath the Prince Sandstone, a channel body and local aquifer. The sandstone has up to 42.5 md permeability and 19.5% porosity, mainly secondary porosity generated from near-complete dissolution of early formed calcite cement, remnants of which are present locally. Some pores are partially filled with quartz overgrowths on framework grains and aggregates of kaolinite, quartz, siderite, and minor illite. Formation waters within the Prince Sandstone are Na-Ca-Cl fluids with total dissolved solids (TDS) from 7,950 to 47,840 mg/L, increasing downdip, and high Br:Cl ratios. Salinity estimates using geophysical logs on wells drilled prior to mining agree well with the TDS values, confirming that the fluid samples are relatively pristine. The saline component originated as residual evaporative brines derived from the underlying Windsor Group, and probably entered the sandstone along faults during deep Permo-Triassic burial.The saline formation waters have been diluted by fresh surficial fluids that, based on isotopic data, were warmer than present precipitation, suggesting interglacial or preglacial sources. These surficial fluids entered the Prince Sandstone aquifer along the nearby Mountain Fault and/or from the surface, and dilution may have taken place at any time since the mid-Mesozoic, when basin inversion brought the strata to a near-surface position. The dilute fluids may have promoted generation of secondary porosity within the sandstone, probably long after maturation of the coals, as there is little evidence in the coalfield that fluids released during maturation generated high porosity levels. 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 | 0,003 | 0,003 |
| Études des sciences et des technologies | 0,002 | 0,001 |
| Communication savante | 0,001 | 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) | 0,003 | 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 ».