Fluid evolution and diagenesis of a Carboniferous channel sandstone in the Prince Colliery, Nova Scotia, Canada
Bibliographic record
Abstract
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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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.003 | 0.003 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.001 | 0.000 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.003 | 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".