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TitreIntegrated methodology for determining provenance of detrital quartz using optical petrographic microscopy and cathodoluminescence (CL) properties
AuteurSales de Oliveira, C; Pe-Piper, G; Piper, D J W; Zhang, Y; Corney, R
SourceMarine and Petroleum Geology vol. 88, 2017 p. 41-53, https://doi.org/10.1016/j.marpetgeo.2017.07.031
Année2017
Séries alt.Ressources naturelles Canada, Contribution externe 20170016
ÉditeurElsevier
Documentpublication en série
Lang.anglais
DOIhttps://doi.org/10.1016/j.marpetgeo.2017.07.031
Mediapapier; en ligne; numérique
Formatspdf
ProvinceRégion extracotière de l'est
SNRC10; 20; 21A; 21B; 21G; 21H; 21P; 21I; 21J; 21O; 11; 1; 2; 12; 22A; 22B; 22G; 2HH; 22J; 22I; 22O; 22P
Lat/Long OENS -65.0000 -55.0000 53.0000 45.0000
Sujetsquartz; origine; minéraux détritiques; métamorphisme; cristaux de roche; Crétacé; Jurassique
Illustrationslocation maps; stratigraphic columns; tables; photomicrographs; histograms; pie charts
ProgrammeAnalyse des bassins frontaliers, Les géosciences pour les nouvelles sources d'énergie
Résumé(disponible en anglais seulement)
The 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.
Résumé(Résumé en langage clair et simple, non publié)
Cette étude présente un diagramme qui permet d¿identifier la source de quartz dans les réservoirs d¿hydrocarbures extracôtiers composés de grès. Cette méthode est appliquée au puits Bandol-1 du sous-bassin Laurentien, au large de Terre-Neuve.
GEOSCAN ID300530