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Titre3D geological modelling of the Double Eagle-Black Thor intrusive complexes, McFaulds Lake Greenstone Belt, Ontario
TéléchargerTéléchargement (publication entière)
AuteurLaudadio, A B; Schetselaar, E; Houlé, M G; Samson, C
SourceTargeted Geoscience Initiative: 2017 report of activities, volume 2; par Rogers, N (éd.); Commission géologique du Canada, Dossier public 8373, 2018 p. 35-41, https://doi.org/10.4095/306599
Année2018
ÉditeurRessources naturelles Canada
Documentdossier public
Lang.anglais
DOIhttps://doi.org/10.4095/306599
Mediaen ligne; numérique
Référence reliéeCette publication est contenue dans Rogers, N; (2018). Targeted Geoscience Initiative: 2017 report of activities, volume 2, Commission géologique du Canada, Dossier public 8373
Formatspdf
ProvinceOntario
SNRC43D/09; 43D/16
Lat/Long OENS -86.4067 -86.1119 52.8208 52.7064
Sujetsgisements minéraux; nickel; cuivre; chrome; gîtes volcanogènes; gîtes sulfureux; genèse des minerais; minéralisation; établissement de modèles; analyses structurales; analyses texturales; analyses de carottes de sondage; interprétations géophysiques; interprétations magnétiques; magnétisme du champ complet; anastomose; ceintures de roche verte; magmatisme; intrusions; géologie du substratum rocheux; lithologie; roches ignées; roches intrusives; roches ultramafiques; roches intrusives mafiques; gabbros; roches intrusives felsiques; tonalites; granodiorites; diorites; granites; roches volcaniques; roches volcaniques felsiques; roches métamorphiques; roches volcaniques métamorphosées; roches sédimentaires métamorphosées; chromite; caractéristiques structurales; zones de cisaillement; failles mineures évasantes; failles; roches hôtes; Archéen; Province de Superior ; géologie économique; géologie structurale; Précambrien
Illustrationslocation maps; geoscientific sketch maps; 3-D images; 3-D models; photographs
Consultation
Endroit
 
Bibliothèque de Ressources naturelles Canada - Ottawa (Sciences de la Terre)
 
ProgrammeGestion de la connaissance de IGC, Initiative géoscientifique ciblée (IGC-5)
ProgrammeSystèmes de nickel-cuivre-EGP-chrome, Initiative géoscientifique ciblée (IGC-5)
Diffusé2018 03 01
Résumé(disponible en anglais seulement)
A 3D geological model is in development of the subsurface architecture and structural disposition of the Double Eagle (DEIC) - Black Thor (BTIC) intrusive complexes of the 'Ring of Fire' intrusive suite in northwestern Ontario. The 3D geological model is constrained by drillhole data from exploration claims, geological maps and a revised structural interpretation based on high resolution magnetic data. Gridded total magnetic field intensity grid was used to outline linear to curvilinear magnetic lows, defining a system of anastomosing shear zones that had previously been outlined on medium resolution magnetic data. Structural fabrics in drill core confirm that these shear zones define the contacts between ultramafic and gabbroic units within the intrusions, as well as the contacts with their felsic intrusive and volcanic host rocks. The Frank shear zone, which follows the northern margin of the ultramafic rock units in both intrusive complexes, displaces the chromite- and Ni-Cu-(PGE)-bearing ore zones within the DEIC for 1 to 1.5 km in a dextral apparent sense. To the south, the McFaulds shear zone overprinted the intrusive contact between the ultramafic rocks of the DEIC and its mafic-dominated volcanic host rocks. The 3D geological model will be used in an attempt to restore the displacement of the DEIC and BTIC with respect to their magmatic conduits in 3D space. This will ultimately provide new insights into the plumbing system associated with the Ni-Cu-(PGE) and chromite mineralization.
GEOSCAN ID306599