Petrogenesis of Granitoid and Greenstone Rocks in the Yalgoo Area, Murchison Domain of the Youanmi Terrane, Yilgarn Craton, Western Australia, with Emphasis on Granitoid-Hosted Gold Mineralization
MetadataShow full item record
Two groups of mafic volcanic rocks and three types of granitoids have been identified in the Yalgoo area of Western Australia. Granodiorite records ages of ~2760 Ma and biotite monzogranite ages of 2636 Ma. A 1.85 Ga dolerite dyke is the first Paleoproterozoic dyke identified from the Yilgarn Craton. An indirect age of ~2.63 Ga is inferred for gold mineralization. Geochemical data indicate formation in a continental marginal arc with traces of Hadean crust.