Structural controls on the Cowarra gold deposit near Bredbo, southeastern New South Wales

Early recumbent fold hinge in the Bradleys Creek Metamorphic Complex, near Canberra, Australia

“…The eastern metamorphic complexes have similar structural associations; early folds are closely associated with the formation of each of them and the higher grade rocks all show an Si cleavage, commonly of segregated type, and preserve Si cleavage as inclusion trails in porphyroblasts (personal observation at the Jerangle and Cambalong Metamorphic Complexes;Hayden 1980;McQueen et al 1986;VandenBerg et al 1992;Rickard et al 1996).…”

“…The complex is surrounded by low-greenschist facies to unmetamorphosed Ordovician turbidites. The metamorphic boundary is gradational with no apparent structural break, as with the Jerangle Metamorphic Complex to the south (Hayden 1980;Rickard et al 1996); there is no evidence for a thrust boundary as interpreted for the Jerangle Metamorphic Complex by Glen and Lewis (1994), although there may be other thrusts in the section (Hayden 1980;Glen 1992).…”