Geochronology of the North Caribou greenstone belt, Superior Province Canada: Implications for tectonic history and gold mineralization at the Musselwhite mine

Interpretations and implications of LA ICP-MS analysis of chert for the origin of geochemical signatures in banded iron formations (BIFs) from the Meadowbank gold deposit, Western Churchill Province, Nunavut

“…Studies of gold deposits associated with Algoma-type BIF in Archaean cratons have shown that gold is associated with localized sulfide-facies zones within regionally extensive oxide-facies units (e.g., Kaapvaal, Zimbabwe, Superior, Slave and Churchill cratons; Phillips et al, 1984;Bleeker, 2006;Biczok et al, 2012). The depositional and geodynamic settings of these deposits are contentious due to post depositional overprinting and the absence of modern analogues.…”

Post-orogenic thermal evolution of newborn Archean continents

“…Using several review studies (Card, 1990;Moser et al, 1996;Easton, 2000;Percival et al, 2006Percival et al, , 2012Heaman et al, 2011;Biczok et al, 2012, and references therein) we have produced a simplified geological map and a schematic chronology of craton formation in the Superior Province ( Figs. 1 and 2).…”

“…Chronology of main events in the Superior Province before and just after amalgamation in five terranes from the western Superior and one representative one from the eastern Superior, culled from Easton(2000),Heaman et al (2011), Biczok et al (2012,…”

Results of LA-ICP-MS sulfide mapping from Algoma-type BIF gold systems with implications for the nature of mineralizing fluids, metal sources, and deposit models

“…Caribou greenstone belt, which is dominated by mafic to ultramafic metavolcanic rocks of the 2973-< 2967-Ma Opapimiskan-Markop assemblage and tholeiitic basalts and minor felsic volcanic rocks of the 2980-2982 Ma South Rim assemblage (Biczok et al 2012;McNicoll et al 2016). These rocks were metamorphosed at lower greenschist to low-mid amphibolite facies (Breaks et al 2001) and deformed by three events (Hall and Rigg 1986;Breaks et al 2001).…”

“…These rocks were metamorphosed at lower greenschist to low-mid amphibolite facies (Breaks et al 2001) and deformed by three events (Hall and Rigg 1986;Breaks et al 2001). Note that regional and deposit scale geological maps along with relevant discussions are documented in Biczok et al (2012) and Oswald et al (2015) and thus are not repeated here. Gold mineralization is mainly confined to silicate facies BIFs (ESM 2H, I, J) within high-strain zones along and immediately adjacent to the lower pressure areas such as steep limbs of the folded iron formation (Biczok et al 2012).…”