This group of units consists of undulating and rolling hills, and with one gorge unit (E/HvG) within granitic terrain north and south of Genoa. There are a number of units within this group but the variation is attributable to a climatic (rainfall) range within the area. Climate influences many soil properties and the range of vegetation in these units which ranges from drier Lowland Sclerophyll Forest to Wet Temperate Rainforest. There are some minor Plains units within this land system grouping. A number of prominent hills (e.g. Maramingo Hill) have resistant granitic crests but generally most of the units consist of well weathered mantles all with a quartz component. There are some Tertiary/Quaternary cappings of aeolian sand on some ridges, particularly south of the Princes Highway. The more humid, sheltered areas have more friable subsoils but still have paler less structured or massive A2 horizons. The vegetation is dominated by mixed species of Stringybarks and Silvertop with other species in drainage lines and moister (southerly and easterly) aspects. Geology: Dgl2; Devonian Granite (Maramingo Granite). Predominantly granite and granodiorite with some other granitic rocks. Rainfall: 700 to greater than 1200 mm per annum, generally less than 1000 mm per annum. Slope: 3-100%; generally 10-32%. Dominant landform element: Slope. Minor landform element: Drainage depressions open and closed. |