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TitleIntegrated methodology for determining provenance of detrital quartz using optical petrographic microscopy and cathodoluminescence (CL) properties
AuthorSales de Oliveira, C; Pe-Piper, G; Piper, D J W; Zhang, Y; Corney, R
SourceMarine and Petroleum Geology vol. 88, 2017 p. 41-53,
Alt SeriesNatural Resources Canada, Contribution Series 20170016
Mediapaper; on-line; digital
File formatpdf
ProvinceEastern offshore region
NTS10; 20; 21A; 21B; 21G; 21H; 21P; 21I; 21J; 21O; 11; 1; 2; 12; 22A; 22B; 22G; 2HH; 22J; 22I; 22O; 22P
AreaScotian Basin
Lat/Long WENS -65.0000 -55.0000 53.0000 45.0000
Subjectsquartz; provenance; detrital minerals; metamorphism; quartz crystals; Bandol-1; panchromatic cathodoluminescence (CL); scanning electron microscope (SEM); Cretaceous; Jurassic
Illustrationslocation maps; stratigraphic columns; tables; photomicrographs; histograms; pie charts
ProgramFrontier basin analysis, Geoscience for New Energy Supply (GNES)
AbstractThe provenance of detrital quartz is a useful predictor in frontier basin sandstone reservoirs of the availability of coarse-grained quartz grains of plutonic or high grade metamorphic origin. The standard approach is to use scanning electron microscope (SEM) panchromatic cathodoluminescence (CL) imagery and observations from an optical petrographic microscope. We describe a work flow, modified from previous literature proposals, to determine quartz provenance in detrital grains using optical petrographic microscopy and CL properties from both a hot-cathode cathodoluminescence microscope attachment (HCMA) and panchromatic SEM-CL. HCMA analysis permits better discrimination of different types of metamorphic quartz. This method is applied to a Middle Jurassic to Lower Cretaceous section in the Bandol-1 wildcat well, located in the Laurentian sub-basin south of Newfoundland. Two types of high-grade metamorphic quartz are distinguished, one with low luminescence as described in previous literature and one with medium blue CL colour and a moderate colour shift that is also known from granulite in the hinterland. Three phases of detrital supply are identified, suggesting progressive unroofing of higher grade metamorphic sources through the middle Jurassic and major input of plutonic quartz in the early Cretaceous.
Summary(Plain Language Summary, not published)
This study provides a work-flow for identifying the source of quartz in offshore petroleum sandstone reservoirs. The method is applied to the Bandol-1 well in the Laurentian sub-basin offshore Newfoundland.