Gold prospectivity maps of the Red Lake greenstone belt; application of GIS technology

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doi: 10.1139/e06-020
Authors:Harris, J. R.; Sanborn-Barrie, M.; Panagapko, D. A.; Skulski, T.; Parker, J. R.
Author Affiliations:Primary:
Geological Survey of Canada, Ottawa, ON, Canada
Other:
Queen's University, Canada
Natural Resources Canada, Canada
Ontario Geological Survey, Canada
Volume Title:western Superior Province Lithoprobe and NATMAP transects--Les géotraverses des projets CARTNAT et Lithoprobe de la Province du lac Supérieur occidentale
Volume Authors:Percival, John A., editor; Helmstaedt, Herwart H.
Source:The western Superior Province Lithoprobe and NATMAP transects--Les géotraverses des projets CARTNAT et Lithoprobe de la Province du lac Supérieur occidentale, edited by John A. Percival and Herwart H. Helmstaedt. Canadian Journal of Earth Sciences = Revue Canadienne des Sciences de la Terre, 43(7), p.865-893. Publisher: National Research Council of Canada, Ottawa, ON, Canada. ISSN: 0008-4077
Publication Date:2006
Note:In English with French summary. Lithoprobe Publ. No. 1451; Geol. Surv. Can. Contrib. No. 2000209. 50 refs.; illus., incl. 7 tables, geol. sketch map
Summary:Recent advances in the use of Geographic Information Systems (GIS) software and analysis can be used in conjunction with traditional geoscience data sets to determine effective predictors for gold mineralization, from which mineral prospectivity maps can be generated that highlight potential exploration targets on a regional scale. In this paper, key components of the Archean lode gold deposit model for the Red Lake belt are selected and modeled using weights of evidence (WofE) analysis and logistic regression, leading to the creation of gold prospectivity maps. The best predictors for past and present gold producers in the Red Lake camp, according to WofE analysis include (1) elevated trace elements, Au, As, and Sb; (2) a number of alteration indices calculated from oxide geochemical data; (3) alteration characterized by pervasive and vein-style ferroan carbonate and elevated Au, As, Sb, and S anomalies; (4) proximity to the Mackenzie Island stock and diorite phases of the Dome stock; and, (5) tholeiitic basaltic flows and associated gabbroic rocks of the Balmer assemblage. Gold prospectivity maps produced by logistic regression using binary evidence maps highlight anomalous localities within known and highly prospective areas in the district (Madsen-Red Lake corridor, Balmertown - Cochenour - East Bay). In addition, a number of localities not known to contain significant deposits were also identified as prospective.
Sections:Economic minerals and ore deposits
Subsections:Exploration geochemistry
Subjects:Archean; Data processing; Geochemical indicators; Geographic information systems; Gold ores; Greenstone belts; Hydrothermal alteration; Information systems; Intrusions; Lithoprobe; Mapping; Metal ores; Metamorphic belts; Metasomatism; Mineral exploration; NATMAP; Precambrian; Regression analysis; Statistical analysis; Stocks; Trace elements; Canada; Canadian Shield; Eastern Canada; North America; Ontario; Red Lake; Superior Province; Data handling
Coordinates:N505300 N510000 W0940000 W0940000
Abstract Numbers:07M/337
Record ID:2007002792
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute.
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