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https://zone.biblio.laurentian.ca/handle/10219/3756
Titre: | 3D geological modelling of the northern Swayze area of the Abitibi greenstone belt: assisting mineral exploration by mapping controls on gold (Au) deposits |
Auteurs: | Mogashoa, Lawraine Lerato |
Mots clés: | 3D geological modelling;Leapfrog Geo®;northern Swayze area;weights of evidence;gold exploration |
Date publié: | 20-aoû-2021 |
Abstrait: | A 3D geological model of the northern Swayze area is constructed through the integration of lithological, structural, geological cross-sections, and seismic information in a Leapfrog Geo® modelling software to delineate structural geometry and geological distribution of rock units in the area. Using a mineral system approach, important geological features are extracted from the 3D geological model. A log-linear 3D weights of evidence method is used to quantify the spatial association between orogenic gold (Au) mineralization and various geological features that might represent ore-controlling factors. This method reveals that the dominant controls on Au mineralization are the second and third generation of deformation zones (D2 and D3), lithological contacts, and second and third-order faults. The posterior probability model is effective in capturing most of the Au occurrences (81%) within 18% of the study area, and the predictive rate curve indicates that the model performs better than random, as it is effective in predicting 71% of the validation points within 30% of the study area. |
URI: | https://zone.biblio.laurentian.ca/handle/10219/3756 |
Apparaît dans les collections: | Geology - Master's Theses Master's Theses |
Fichiers dans cet item:
Fichier | Description | Taille | Format | |
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MSc thesis_Mogashoa_0365186.pdf | 10.4 MB | Adobe PDF | ![]() Parcourir/Ouvrir |
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