Brisbane tuff

Illustrating the many natural colours of Brisbane tuff, St Mary's Anglican Church, Kangaroo Point, 2016

Brisbane tuff is a type of rock,[1] formed as a result of a volcanic eruption. As the name suggests, it is a type of tuff found in Brisbane, Queensland, Australia.[2] It is a form of welded ignimbrite.[3] Brisbane tuff comes in a variety of colours: pink, green, blue-grey, yellow and purple.[4] The different colours are due to the extent of oxidation of iron and manganese.[5]

It is often incorrectly described as porphyry.[5]

  1. ^ Briggs, Cecily (1929). "The Brisbane tuff". Proceedings of the Royal Society of Queensland. 40 (12): 147–164. doi:10.5962/p.351546. S2CID 257134865 – via Biodiversity Heritage Library.
  2. ^ Richards, H. C. and Bryan, W. H. (1933). "The problem of Brisbane tuff" (PDF). Proceedings of the Royal Society of Queensland. 45 (11): 50–65. doi:10.5962/p.351598. S2CID 140157192 – via UQ eSpace.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  3. ^ "Brisbane Tuff". Windsor and Districts Historical Society. Retrieved 2 June 2014.
  4. ^ "Products". Queensland Heritage Masonry Pty Ltd. Archived from the original on 7 June 2014. Retrieved 2 June 2014.
  5. ^ a b Thomas, Glenn S. (1999). "Porphyry, tuff and loose specifications" (PDF). Landscape Australia. 21 (2): 124–126. Retrieved 3 June 2014.