Geology and putative microfossil assemblage of the c. 3460 Ma 'Apex Chert', Chinaman Creek, Western Australia : a field and petrographic guide
"Between 1999 and 2004, we undertook detailed field and petrographic studies to critically assess the biogenicity of microfossil-like structures in c. 3640 Ma chert of the Apex Basalt, near Marble Bar. For almost 20 years, the scientific community had generally accepted that these carbonaceous structures were Earth's oldest known microfossils. However, the main conclusions from our study ... were that the structures interpreted to be microfossils failed to meet various key criteria required for acceptance of a biological origin. We now present additional information on the geological origin of the host rocks, plus petrographic descriptions of the thin sections that were originally used to argue for the presence of microfossils."--Abstract
Print Book, English, 2011
Geological Survey of Western Australia, East Perth, W.A., 2011