Volcanic framework and geochemical evolution of the Archean Hope Bay Greenstone Belt, Nunavut, Canada ...

• Main Author: Shannon, Andrew J.
• Format: Text
• Language: English
• Published: University of British Columbia 2008
• Subjects: Nunavut; Canada; Hope Bay
• Online Access: https://dx.doi.org/10.14288/1.0052749; https://doi.library.ubc.ca/10.14288/1.0052749

Part of the Slave Structural Province, the Hope Bay Greenstone Belt is a 82 km long north-striking sequence of supracrustal rocks dominated by mafic volcanic rocks with lesser felsic volcanic and sedimentary rocks. Mapping of two transects in the southern section and two transects in the northern section have contributed to a robust stratigraphic framework the belt. Three recently discovered Archean lode gold deposits in the Hope Bay Greenstone belt have associations with major structures and specific lithologies (Fe-Ti enriched basalts). The Flake Lake and the Clover Transects are in the southern part of the belt and the Wolverine and Doris-Discovery Transects are in the northern part of the belt. This work subdivides the volcanic rocks into distinct suites based upon field, petrologic, geochemical, and geochronologic criteria. Some of the suites are stratigraphically continuous and can be correlated tens of kilometres along strike thereby linking the two parts of the Hope Bay Greenstone Belt. U-Pb ...