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The following is a timeline of the history of the city of Sydney, New South Wales, Australia. ==Prehistory== *50,000-45,000 BP – Near Penrith, a far western suburb of Sydney, numerous Aboriginal stone tools were found in Cranebrook Terraces gravel sediments dating to this time period; at first when these results were new they were controversial. More recently in 1987 and 2003, dating of the same strata has revised and corroborated these dates. *30,000 BP – Radiocarbon dating suggests human activity occurred in and around the Sydney basin, as evidenced by an archaeological dig in Parramatta, in Western Sydney.〔Geoffrey Blainey; A Very Short History of the World; Penguin Books; 2004; ISBN 978-0-14-300559-9〕 The finds show that the Aboriginal Australians in that region used charcoal, stone tools and possible ancient campfires.〔Mulvaney, D J and White, Peter, 1987, Australians to 1788, Fairfax, Syme & Weldon, Sydney〕 *21,100-17,800 BP – Stone artifact assemblages dating to this time period discovered in Shaws Creek (near Hawkesbury River) and in Blue Mountains. A rock shelter with flakes dating to this period discovered near Nepean River.〔V Attenbrow, G Robertson and P Hiscock, 'The changing abundance of backed artefacts in south-eastern Australia: a response to climate change?', Journal of Archaeological Science, vol 36, no 2009, pp 2765–70〕 *4,000-2,000 BC – The first backed stone artifacts developed, such as blades and spears. The stones would drill, scrape, cut and grind material. They were also associated with woodworking.〔P Hiscock, Archaeology of Ancient Australia, Routledge, New York, 2008〕 *1,000-500 BC – Bone and shell usage dating to this period discovered. They would've been attached to fishing spear prongs, which would mean that multi-pronged fishing spears occurred at this time. The evidence of spear-throwing is suggested by an excavated shell in Balmoral Beach.〔J McDonald, Dreamtime Superhighway. An Analysis of Sydney Basin Rock Art and Prehistoric Information Exchange, Terra Australis 27, ANU EPress, Canberra, 2008〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Timeline of Sydney」の詳細全文を読む スポンサード リンク
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