THE third special presentation meeting of the Hamilton Field Naturalists Club for 2024 will be held at Hamilton Institute of Rural Learning on (edited) Thursday, July 18 at 7.30 pm featuring Dr Roland Maas and Andrew Prior presenting their research on the ages and geochemistry of the Grampians/Gariwerd Ranges.

This presentation will describe the geology of the Grampians Ranges, starting with the deposition of thick river and delta sandstone-mudstone formations some 430 million years ago, the subsequent period of faulting, folding, early erosion and magmatism, and finally the long history of gradual uplift and erosion which coincided with episodes of glaciation and basaltic volcanism.