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.
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Research Article|
August 20, 2020
Potential-field modelling of the prospective Chibougamau area (northeastern Abitibi subprovince, Quebec, Canada) using geological, geophysical, and petrophysical constraints
Amir Maleki;
a
Mineral Exploration Research Centre, Harquail School of Earth Sciences, Laurentian University, 935 Ramsey Lake Road, Sudbury, ON P3E 2C6, Canada.Corresponding author: Amir Maleki (email: malekiamir3034@gmail.com).
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Richard Smith;
Richard Smith
a
Mineral Exploration Research Centre, Harquail School of Earth Sciences, Laurentian University, 935 Ramsey Lake Road, Sudbury, ON P3E 2C6, Canada.
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Esmaeil Eshaghi;
Esmaeil Eshaghi
a
Mineral Exploration Research Centre, Harquail School of Earth Sciences, Laurentian University, 935 Ramsey Lake Road, Sudbury, ON P3E 2C6, Canada.d
School of Natural Sciences (Earth Sciences) and ARC Centre of Excellence in Ore Deposits (CODES), University of Tasmania, Private Bag 79, Hobart, TAS, 7001, Australia.e
ExploreGeo, 10 O’Connor Way, Wangara, WA 6065, Australia.
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Lucie Mathieu;
Lucie Mathieu
c
Centre d’études sur les Ressources minérales (CERM), Département des Sciences appliquées, Université du Québec à Chicoutimi (UQAC), 555 boul. de l’université, Chicoutimi, QC G7H 2B1, Canada.
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David Snyder;
David Snyder
a
Mineral Exploration Research Centre, Harquail School of Earth Sciences, Laurentian University, 935 Ramsey Lake Road, Sudbury, ON P3E 2C6, Canada.
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Mostafa Naghizadeh
Mostafa Naghizadeh
a
Mineral Exploration Research Centre, Harquail School of Earth Sciences, Laurentian University, 935 Ramsey Lake Road, Sudbury, ON P3E 2C6, Canada.
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Canadian Journal of Earth Sciences (2021) 58 (3): 297–312.
Article history
received:
27 Nov 2019
accepted:
03 Jul 2020
first online:
10 Mar 2021
Citation
Amir Maleki, Richard Smith, Esmaeil Eshaghi, Lucie Mathieu, David Snyder, Mostafa Naghizadeh; Potential-field modelling of the prospective Chibougamau area (northeastern Abitibi subprovince, Quebec, Canada) using geological, geophysical, and petrophysical constraints. Canadian Journal of Earth Sciences 2020;; 58 (3): 297–312. doi: https://doi.org/10.1139/cjes-2019-0221
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Index Terms/Descriptors
- Abitibi Belt
- Canada
- Canadian Shield
- copper ores
- Eastern Canada
- folds
- geophysical methods
- geophysical profiles
- geophysical surveys
- gold ores
- greenstone belts
- hydrothermal conditions
- intrusions
- magnetic anomalies
- magnetic methods
- metal ores
- metamorphic belts
- mineral exploration
- mineralization
- North America
- plutons
- potential field
- Quebec
- seismic methods
- seismic profiles
- Superior Province
- surveys
- two-and-a-half-dimensional models
- Chibougamau Pluton
Latitude & Longitude
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