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The Sand Bay and Lighthouse (Lower- and Upper-) and Armer Bay gneiss associations comprise metasupracrustal rocks within, respectively, the Shawanaga and basal Parry Sound domains – elements of deep-crustal thrust sheets of the Central Gneiss Belt of the Grenville Province in Ontario. New and published geochemical, isotope and detrital zircon data for metavolcanic and metasedimentary rocks of these...
In the southwestern Grenville Province, the Central Gneiss Belt consists of a belt of parautochthonous rocks in the north and a collage of allochthonous lithotectonic domains in the south. Near Pointe-au-Baril, Ontario, the allochthon-parautochthon boundary is marked by the Shawanaga shear zone, a northwest-directed thrust zone between the Britt and Shawanaga domains that was reactivated during ductile,...
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