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Potential-field modelling of the prospective Chibougamau area (northeastern Abitibi Subprovince, Quebec, Canada) using geological, geophysical, and petrophysical constraints

Maleki, Amir ; Smith, Richard ; Eshaghi, Esmaeil ; Mathieu, Lucie ; Snyder, David ; Naghizadeh, Mostafa

Canadian journal of earth sciences, 2021-03, Vol.58 (3), p.297-312 [Periódico revisado por pares]

1840 Woodward Drive, Suite 1, Ottawa, ON K2C 0P7: National Research Council of Canada

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Título:
Potential-field modelling of the prospective Chibougamau area (northeastern Abitibi Subprovince, Quebec, Canada) using geological, geophysical, and petrophysical constraints
Autor: Maleki, Amir ; Smith, Richard ; Eshaghi, Esmaeil ; Mathieu, Lucie ; Snyder, David ; Naghizadeh, Mostafa
Assuntos: 2.5D modelling ; Abitibi Belt ; Analysis ; applied (geophysical surveys & methods) ; Bedrock ; Canada ; Canadian Shield ; Chibougamau Pluton ; Constraints ; contraintes géologiques ; Copper ; copper ores ; Cratons ; Earth science ; Eastern Canada ; Economic geology ; Environmental aspects ; Exploration ; folds ; geological ; geological modelling ; Geology ; Geology, Structural ; Geometry ; Geophysical data ; Geophysical methods ; geophysical profiles ; geophysical surveys ; Geophysics ; Gold ; gold ores ; gravity and magnetic ; Gravity data ; gravité et magnétisme ; greenstone belts ; géophysique ; hydrothermal conditions ; Igneous rocks ; intrusions ; Lithology ; magnetic anomalies ; Magnetic data ; magnetic methods ; metal ores ; metamorphic belts ; Methods ; Mineral exploration ; Mineralization ; Modelling ; modélisation du champ de potentiel ; modélisation en 2,5D ; modélisation géologique ; North America ; Orientation ; Plutons ; potential field ; potential-field modelling ; Prospecting ; Quebec ; seismic and petrophysical constraints ; seismic methods ; Seismic profiles ; sismiques et pétrophysiques ; Structural geology ; Superior Province ; surveys ; Two dimensional models ; two-and-a-half-dimensional models
É parte de: Canadian journal of earth sciences, 2021-03, Vol.58 (3), p.297-312
Descrição: This paper focusses on obtaining a better understanding of the subsurface geology of the Chibougamau area, in the northeast of the Abitibi greenstone belt (Superior craton), using geophysical data collected along a 128 km long traverse with a rough southwest-northeast orientation. We have constructed two-dimensional (2D) models of the study area that are consistent with newly collected gravity data and high-resolution magnetic data sets. The initial models were constrained at depth by an interpretation of a new seismic section and at surface by the bedrock geology and known geometry of lithological units. The attributes of the model were constrained using petrophysical measurements so that the final model is compatible with all available geological and geophysical data. The potential-field data modelling resolved the geometry of plutons and magnetic bodies that are transparent on seismic sections. The new model is consistent with the known structural geology, such as open folding, and provides an improvement in estimating the size, shape, and depth of the Barlow and Chibougamau plutons. The Chibougamau pluton is known to be associated with Cu-Au magmatic-hydrothermal mineralisation and, as the volume and geometry of intrusive bodies is paramount to the exploration of such mineralisation, the modelling presented here provides a scientific foundation to exploration models focused on such mineralisation.
Editor: 1840 Woodward Drive, Suite 1, Ottawa, ON K2C 0P7: National Research Council of Canada
Idioma: Inglês

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Potential-field modelling of the prospective Chibougamau area (northeastern Abitibi Subprovince, Quebec, Canada) using geological, geophysical, and petrophysical constraints

Maleki, Amir ; Smith, Richard ; Eshaghi, Esmaeil ; Mathieu, Lucie ; Snyder, David ; Naghizadeh, Mostafa

1840 Woodward Drive, Suite 1, Ottawa, ON K2C 0P7: National Research Council of Canada

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