OPW052025 Report - Part 2

                                   Text Figure 7: Looking north over proposed house site


4.2               Geology
4.2.1             Regional Geology
A published geological map for the region1 indicates that the site is underlain by the middle Triassic age
Kin Kin Beds, which are described as “strongly cleaved and commonly kinked mudstone with thin siltstone
laminae, minor volcaniclastic sandstone.” It is noted that some peaks in the wider area are ‘capped’ with
Tertiary age “olivine basalt flows,” which are shown on the regional mapping in areas such as Black
Mountain, about 2.5 km to the south/south-east. An extract of the published mapping is given in Text
Figure 8.




1
    State of Qld., Dept. of Natural Resources, Mines and Energy, 1:100,000 Gympie Surface Geology Map, Sheet 9445, 2018


Geotechnical Investigation & Slope Stability Assessment
9 April 2025 | 25050-001-Rev0                                                                                             7