Editing Geology of Victoria (section)

===Moyston Fault===
[[File:Island Archway, Great Ocean Rd, Victoria, Australia - Nov 08.jpg|thumb|right|350px|Island Archway on the [[Great Ocean Road]] in [[Victoria, Australia]]. Taken as a 6 segment panorama showing the surrounding coastline.]]
The Moyston Fault is the most important fault as it forms the terrane boundary between the Delamerian and Lachlan fold belts. These twofold belts show important differences. The Delamerian Fold Belt is mainly composed of Neoproterozoic-[[Cambrian]] rocks and was deformed in the Late Cambrian Delamerian [[Orogeny]] whereas the Lachlan Fold Belt contains mainly Cambrian-[[Devonian]] rocks with the main deformations occurring in the late [[Ordovician]] to early Carboniferous interval. The first regional deformation to affect the Lachlan Fold Belt was the Benambran Orogeny, about 450 [[mya (unit)|MYA]], after the Delamerian Orogeny.<ref name="geol_of_vic"/> [[Granite]]s comprise 20% of the total exposed area of the Lachlan Fold Belt and fall within an age range of 440 to 350 MYA. Volcanics associated with the granites are also widespread and cover an additional 5%. Blocks of older [[Crust (geology)|crust]] consisting of Neoproterozoic-Cambrian rocks, such as the '''Selwyn Block''' in central Victoria, were deformed during the late Cambrian Tyennan Orogeny prior to being incorporated into the Lachlan Fold Belt.