Near Penrith, since 1971 numerous Aboriginal stone tools were found in Cranebrook Terraces gravel sediments deposited by the Nepean River 40,000 to 50,000 years ago, according to repeated, revised and corroborated radiocarbon and thermoluminescence dating.
Radiocarbon dating | radiocarbon dating | Ang Dating Daan | Radiometric dating | radiometric dating | Uranium-thorium dating | uranium-thorium dating | Thermoluminescence dating | thermoluminescence dating | Rubidium-strontium dating | Optical dating | Obsidian hydration dating | ''Dating in the Dark'' | Blind Dating | Badger Books SF-58 and SF-61, both dating from 1961 and bearing the byline "John E. Muller" -- but "The Mind Makers" is by Lionel Fanthorpe |