1. Eastern Uplands (EU)
1.2.1 Plateaux and broad ridges (Straghbogie, Koetong-Shelly, Errinundra, Kinglake, Olinda)
1.2.2 Enclosed landscapes of low relief (Fraser Tableland, Benambra)
These landscapes appear to be generally of similar age to those described in Tier 1.1 but occur at intermediate elevations (500-1200 m). They are generally characterised by undulating to low hilly areas and low-gradient streams. On the northern side of the Great Divide, the Tawanga fault has created an abrupt termination of the Kiewa valley landscape at Tawonga, and a major break between Tiers 1.1 and 1.2. The Koetong-Shelly plateau and the Strathbogie tablelands at elevations about 600 – 1 100 m are formed on granite. The Beechworth - Stanley uplands (600 – 700 m) are partly granitic and partly Palaeozoic sediments, the latter also having areas of late Tertiary alluvium which have been sluiced for alluvial gold. The Wabonga and Toombullup uplands are separated by the deeply incised valley of the King River. The former occurs on relatively flat bedded non-marine Carboniferous sediments that overlie the Devonian acid volcanic rocks that form the plateau surface of the latter. There are numerous small basaltic residuals on the Toombullup surface. There are also numerous broad ridges that appear to represent the same surface but lack width because of encroachment of the steep slopes of the major drainage systems. |