The landscapes of the Moggill Creek Catchment have been developed from:
- The metamorphosed greywacke, shales, siltstones and phyllites and interbedded volcanics of the Neranleigh – Fernvale beds and Bunya Phyllites. Most of the catchment is developed on the Neranleigh – Fernvale beds, with Bunya Phyllites limited to the NE edge of the Moggill Creek Catchment.
- The Brookfield volcanics which occur mainly in the mid to lower Moggill Creek catchment.
- Alluvium that has been deposited by floods over very long time periods.
The weathering of these different rock types has resulted in a range of different soils which may occur in similar topographic positions across the landscape.