Subdivisions
Broad subdivisions are the Western Lachlan, which lies in Victoria including the Stawell and Melbourne Zones. The eastern boundary is the Mount Wellington—Mount Useful Fault Zone (east of Melbourne). The Central Lachlan includes the Tabberabbera Zone and the Wagga-Omeo Metamorphic Belt. The Eastern Lachlan extends to the east of the Gilmore Fault Zone, a shear zone on the edge of the WOMB.
The Macquarie Volcanic Arc formed about 1000 km off the coast. The Yarrimbah Formation is exposed west of Parkes. It consists of siliceous siltstones, formed in deep water. It is the most western part of the Arc. The Rockley–Gulgong Volcanic Belt. Budhang Chert Member is found near Oberon. The Molong Volcanic Belt lies between Cowra and Boorowa. The Adaminaby Group, from another terrane, was thrust northwards over the top of the Molong Volcanic Belt. The Kenyu Formation is from Late Ordovician and contains conglomerate. The Wagga Belt rocks are thrust eastwards over the top of the Junee-Narromine Volcanic Belt of the Macquarie arc.
Read more about this topic: Lachlan Fold Belt