U-pb geochronology and lithogeochemistry of the Hope Bay greenstone belt, Slave structural province, Northwest Territories, Canada ...

• Main Author: Hebel, Manfred U.
• Format: Text
• Language: English
• Published: University of British Columbia 2009
• Subjects: Northwest Territories
• Online Access: https://dx.doi.org/10.14288/1.0088974; https://doi.library.ubc.ca/10.14288/1.0088974

The Hope Bay greenstone belt (HBGB) is one of several Late Archean greenstone belts recognised within the Slave Structural Province (SSP) in the Northwest Territories, Canada. Unlike most other major greenstone belts in the SSP relatively little is known about the age and evolution of the HBGB. The main goal of this study was to construct a detailed chronostratigraphic and chemostratigraphic framework for the belt that would constrain the temporal and tectonic evolution and thus permit the HBGB to be placed in the regional geological context of the Slave Structural Province. A regional geochronological and lithogeochemical program was carried out in conjunction with geological mapping by BHP Minerals Canada Ltd. personnel. A total of 21 UPb age determinations, 174 major and trace element analyses, and 19 rare earth element analyses resulted from the study. U-Pb geochronology was selected as the critical tool for constraining the stratigraphic and temporal evolution of the belt because of its high blocking ...