| Title | Sedimentary petrology of the upper Cree Member in the Cohasset A-52 well, Scotian Basin, offshore Nova Scotia |
| Download | Downloads |
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| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Pe-Piper, G; Wallace, K; Piper, D J W |
| Source | Geological Survey of Canada, Open File 8537, 2020, 532 pages, https://doi.org/10.4095/321472  Open Access |
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| Year | 2020 |
| Publisher | Natural Resources Canada |
| Document | open file |
| Lang. | English |
| Media | digital; on-line |
| Related | This publication is related to the following
publications |
| File format | readme
|
| File format | pdf; rtf; xlsx (Microsoft® Excel®); xls (Microsoft® Excel®) |
| Province | Eastern offshore region; Nova Scotia |
| Area | Scotian Basin |
| Lat/Long WENS | -61.0000 -60.0000 44.2500 43.7500 |
| Subjects | marine geology; sedimentology; mineralogy; fossil fuels; geophysics; Science and Technology; Nature and Environment; sedimentary petrology; reservoir rocks; detrital minerals; bedrock geology;
lithology; sedimentary rocks; sandstones; turbidites; diagenesis; paragenesis; wells; core samples; electron microscope analyses; depositional environment; depositional history; source rocks; provenance; fluid dynamics; salinity; feldspar;
sphalerite; quartz; glauconite; siderite; francolite; calcite; phosphates; phosphorites; paleodrainage; petroleum resources; petrographic analyses; stratigraphic analyses; lithofacies; clasts; inclusions; porosity; permeability; geophysical logging;
gamma ray logging; mineral assemblages; electron probe analyses; carbonate; Cree Member; Logan Canyon Formation; Cohasset A-52 Well; Ancestral Sable River; Ancestral Banquereau River; Appalachian Province; Grenville Province; Phanerozoic; Mesozoic;
Cretaceous |
| Illustrations | location maps; stratigraphic columns; lithologic sections; geophysical logs; photomicrographs; pie charts; geochronological charts; plots; ternary diagrams; tables; photographs |
| Program | Geoscience for New Energy Supply (GNES) Frontier basin analysis |
| Released | 2020 01 27 |
| Abstract | This report provides detailed petrological study of the upper Cree Member sandstone reservoirs in the Cohasset A-52 well of the Scotian Basin. Textures were studied from backscattered electron images
from a scanning electron microscope (SEM). Minerals were identified by their chemistry using energy dispersive spectroscopy by SEM and by electron microprobe. Reservoir sandstones comprise principally river-mouth turbidites and cross-bedded
shore-face sandstones. K-feldspar is makes up >10% of the sandstone. The sandstones show the same paragenetic sequence of diagenetic minerals as deeper in the stratigraphy, but compaction and pressure solution of quartz is less prominent. Late hot
saline fluids precipitated sphalerite. Glaucony-glauconite and coated grains with berthierine, siderite and francolite are reworked from the common transgressive units by erosion in flood-stage river channels and are deposited in river-mouth
sandstones. Glauconite is most abundant in cross-bedded shoreface sandstones. |
| Summary | (Plain Language Summary, not published)
A study of sandstones in one well in the Scotian Basin and the nature of diagenetic minerals that influence reservoir quality. |
| GEOSCAN ID | 321472 |
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