Geophysical Case Study of the Iso and New Insco Deposits, Quebec, Canada, Part II: Modeling and Interpretation

Abstract

Research Article| January 01, 2006 Geophysical Case Study of the Iso and New Insco Deposits, Québec, Canada, Part II: Modeling and Interpretation L.Z. CHENG; L.Z. CHENG 1Université du Québec en Abitibi-Témiscamingue, Rouyn-Noranda, Québec J9X 5E4. Search for other works by this author on: GSW Google Scholar R.S. SMITH; R.S. SMITH 2Fugro Airborne Surveys, 2060 Walkley Road, Ottawa, Ontario K1G 3P5. Search for other works by this author on: GSW Google Scholar M. ALLARD; M. ALLARD 3Noranda Inc., Division de l’Exploration, 3296 avenue Francis Hughes, Laval, Québec H7L 5A7. Search for other works by this author on: GSW Google Scholar P. KEATING; P. KEATING 4Geological Survey of Canada, Natural Resources Canada, 615 Booth Street, Ottawa, ON K1A 0E9. Search for other works by this author on: GSW Google Scholar M. CHOUTEAU; M. CHOUTEAU 5École Polytechnique de Montréal, Départment des Génies Civil, Géologique et des Mines, Montréal, Québec H3C 3A7. Search for other works by this author on: GSW Google Scholar J. LEMIEUX; J. LEMIEUX 2Fugro Airborne Surveys, 2060 Walkley Road, Ottawa, Ontario K1G 3P5. Search for other works by this author on: GSW Google Scholar M.A. VALLÉE; M.A. VALLÉE 6Fugro Airborne Surveys, 5610 Chemin Bois-Franc, St. Laurent, Montréal, Québec H4S 1A9. Search for other works by this author on: GSW Google Scholar D. BOIS; D. BOIS 1Université du Québec en Abitibi-Témiscamingue, Rouyn-Noranda, Québec J9X 5E4. Search for other works by this author on: GSW Google Scholar D.K. FOUNTAIN D.K. FOUNTAIN 2Fugro Airborne Surveys, 2060 Walkley Road, Ottawa, Ontario K1G 3P5. Search for other works by this author on: GSW Google Scholar Exploration and Mining Geology (2006) 15 (1-2): 65–74. https://doi.org/10.2113/gsemg.15.1-2.65 Article history received: 19 Jan 2005 accepted: 13 Oct 2005 first online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share MailTo Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation L.Z. CHENG, R.S. SMITH, M. ALLARD, P. KEATING, M. CHOUTEAU, J. LEMIEUX, M.A. VALLÉE, D. BOIS, D.K. FOUNTAIN; Geophysical Case Study of the Iso and New Insco Deposits, Québec, Canada, Part II: Modeling and Interpretation. Exploration and Mining Geology 2006;; 15 (1-2): 65–74. doi: https://doi.org/10.2113/gsemg.15.1-2.65 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyExploration and Mining Geology Search Advanced Search Abstract MEGATEMII airborne electromagnetic data collected over the Iso and New Insco massive sulfide deposits have been modeled using three modeling packages. The EMQ package is a quick inversion tool which indicates that the Iso body is a dipping, plate-like body. The New Insco body is inferred to have a geometry somewhere between a dipping plate and a sphere. The Maxwell package was used to refine the properties of the plate-like body at Iso. The EMIGMA package was able to identify which parts of the New Insco orebody were more conductive. It was observed that the most conductive parts correspond to copper-rich zones and the next most conductive to pyrite-rich zones. The EMIGMA package was also used to show that a thick-prism model might be more appropriate for the New Insco orebody.Gravity modeling constrained by the known geology was successful in identifying the denser sulfide zones. The densest zones appear to be pyrite rich. Magnetic modeling identified diabase dikes. Over New Insco, a small magnetic anomaly was attributed to pyrrhotite-rich sulfides. There was only a weak magnetic anomaly over the Iso body, consistent with the nonmagnetic sulfides logged in the holes drilled at that location. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.