Microfossil-like objects from the Archaean of Greenland: a cautionary note

Details Microfossil-like objects from the Archaean of Greenland: a cautionary note Microfossil-like objects from the Archaean of Greenland: a cautionary note

Jan 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981natur.289...51b&link_type=abstract

Nature, Volume 289, Issue 5793, pp. 51-53 (1981).

Physics

14

Scientific paper

Recent reports1-4 have described ``yeast-like microfossils'' (Isuasphaera isua Pflug2) in 3,800-Myr old5 metaquartzites from the Isua supracrustal belt of south-west Greenland. A biogenic interpretation of these objects is inconsistent with the tectonic history of the Isua region6-8, with the petrology of the metaquartzites, and with the morphology of the microstructures themselves. The putative microfossils are indistinguishable from limonite-stained fluid inclusions: microstructures which are demonstrably inorganic and post-depositional in origin. As such, we contend here that these objects should not be regarded as evidence of early Archaean life forms.

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