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Self-assembled Silica-carbonate Structures and Detection of Ancient Microfossils

Garcia-Ruiz, Juan; Hyde, Stephen; Carnerup, Anna; Christy, Andrew; Van Kranendonk, Martin; Welham, N


We have synthesized inorganic micron-sized filaments, whose microstucture consists of silica-coated nanometer-sized carbonate crystals, arranged with strong orientational order. They exhibit noncrystallographic, curved, helical morphologies, reminiscent of biological forms. The filaments are similar to supposed cyanobacterial microfossils from the Precambrian Warrawoona chert formation in Western Australia, reputed to be the oldest terrestrial microfossils. Simple organic hydrocarbons, whose...[Show more]

CollectionsANU Research Publications
Date published: 2003
Type: Journal article
Source: Science
DOI: 10.1126/science.1090163


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