Through this process, the sandstone and siltstone floors of the sea were vaulted skyward. Millions of years later it was this exposed stone that provided building materials to the Ancestral ...

Where the magma intruded at temperatures of 1,200°C, the surrounding sandstone and siltstone heated and cracked. These faults later became handy underground water reservoirs. Practically every ...

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It consists of around 50% sandstone and 50% a mix of siltstone and shale. The aquifer is a major source of water for urban water use as well as individual supply. The Yarragadee aquifer is a ...

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You don’t have to dig deep to spot sandstone, one of civilisation’s oldest building materials. The sturdy, fine-grained rock is abundant in built and natural environments, from Melbourne’s ...