20220109 - Geotech · OPW23/0182

                                   PROPOSED RESIDENCE
                                   21 MAHER TERRACE, SUNSHINE BEACH

4.3          Geology
Available geological information 1 indicates that the site is underlain by Pleistocene age dune sand
(Ref: Text Figure 7). It should be noted that older late Triassic to Jurassic age sedimentary strata of the
Tiaro Coal Measures is mapped and daylights to the north/north-east of the site (Lion Rock).
Although dune sands were expected borehole drilling revealed a sedimentary profile of residual soil over
weathered sandstone. Massively bedded medium strength (or stronger) sandstone was observed in an
upslope cutting along Seaview Terrace to the north-west (Ref. Text Figure 8). The younger aeolian dune
sands may have been eroded from the site over geological time due to the close proximity to the nearby
natural drainage line.




                                                                                  Approx. Site Location




Text Figure 7: Extract of Gympie Special 1:100,000 Geology Map




Text Figure 8: Medium strength sandstone exposed on upslope side of Seaview Terrace




1
    Queensland Government, Department of Mines and Energy, 1:100,000 Gympie Special Geology Map, Sheet 9445 & Part 9545, 1999


16 July 2021
Report No. 21236-001-Rev0                                       5