Electronic Resource
Geology, geochemistry and exploration applications for the Permo-Carboniferous redbed copper deposits of the Cumberland Basin, Nova Scotia, Canada.
| العنوان: | Geology, geochemistry and exploration applications for the Permo-Carboniferous redbed copper deposits of the Cumberland Basin, Nova Scotia, Canada. |
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| المؤلفون: | Ryan R.J., Sediment-hosted stratiform copper deposits Ottawa 17-May-8619-May-86, Boehner R.C., Rogers P.J., Stea R.R. |
| بيانات النشر: | St Johns, Newfoundland Geological Association of Canada 1989 |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | The Cu mineralisation occurs as chalcocite with pyrite and bornite near the red to grey boundaries within the strata. The depth (up to 440 m) of the mineralisation suggests that it is not shallow supergene (less than 20 m) as previously proposed. The coarse-grained redbeds are of diagenetic origin. Geochemical studies of till, stream sediment and rocks indicate that Cu may have been leached from the redbeds, probably during a late Permian-early Triassic reddening event. Oxygenated groundwater may have carried the Cu in solution from the redbeds to reducing sites, either carbon-rich lags within the channel sandstones or at the interface with reducing basinal waters, where the Cu was precipitated at a solution front. The association of extensive negative geochemical Cu anomalies with redbeds containing numerous Cu occurrences delineates potential areas of exploration for mineralisation of this type. The Cu mineralisation occurs as chalcocite with pyrite and bornite near the red to grey boundaries within the strata. The depth (up to 440 m) of the mineralisation suggests that it is not shallow supergene (less than 20 m) as previously proposed. The coarse-grained redbeds are of diagenetic origin. Geochemical studies of till, stream sediment and rocks indicate that Cu may have been leached from the redbeds, probably during a late Permian-early Triassic reddening event. Oxygenated groundwater may have carried the Cu in solution from the redbeds to reducing sites, either carbon-rich lags within the channel sandstones or at the interface with reducing basinal waters, where the Cu was precipitated at a solution front. The association of extensive negative geochemical Cu anomalies with redbeds containing numerous Cu occurrences delineates potential areas of exploration for mineralisation of this type. |
| مصطلحات الفهرس: | CANADA, COPPER, CUMBERLAND BASIN, ECONOMIC GEOLOGY, GEOCHEMISTRY, NOVA SCOTIA, ORE GENESIS, ORE PETROLOGY, STRATIFORM DEPOSITS, STRATIGRAPHY, text |
| URL: | Boyle R.W.; Brown A.C.; Jefferson C.W.; Jowett E.C.; Kirkham R.V.; (eds)%C%, proceedings |
| الاتاحة: | Open access content. Open access content |
| ملاحظة: | und |
| Other Numbers: | UKMMM oai:icon.iom3.org:78154 1309211133 |
| المصدر المساهم: | INSTITUTE OF MATS MINERALS & MINING From OAIster®, provided by the OCLC Cooperative. |
| رقم الانضمام: | edsoai.on1309211133 |
| قاعدة البيانات: | OAIster |
| الوصف غير متاح. |