Geology of Australia and New Zealand, HWS/UC Great moments in Australian Geology including formation of ore deposits
Some important dates… 4.4 Ga Oldest mineral grain, zircon from sandstones in SW Australia Ga, Oldest rocks, Acosta Fm, NW Canada Ga, Oldest biomarkers (organic compounds with enriched light isotopes of C), Isua, Greenland 3.4 Ga, Oldest claimed fossils, Warrawoona Group, W. Australia 2.7 Ga, Oldest accepted fossils, South Africa 2.7 Ga, Methylhopanes, metabolic products of cyanobacteria, Pilbara, W. Australia 640 Ma, Earliest multicellular fossils, Ediacaran Hills, South Australia 580 Ma, Complex animal fossils, Burgess Shale, Canadian Rockies after ca. 550Ma, Abundant fossils (hard skeletons), widespread ca. 350Ma, Development of land plants, followed by massive coal deposition, ca Ma