Stromatolites 3,400-3,500 Myr old from the North Pole area, Western Australia

Details Stromatolites 3,400-3,500 Myr old from the North Pole area, Western Australia Stromatolites 3,400-3,500 Myr old from the North Pole area, Western Australia

Apr 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980natur.284..443w&link_type=abstract

Nature, Volume 284, Issue 5755, pp. 443-445 (1980).

Mathematics

Logic

49

Scientific paper

Stromatolites are the least controversial evidence of early life; they are organosedimentary structures resulting from the growth and metabolic activity of microorganisms1. Before this report, however, the oldest well established occurrence was in the 2,900-3,000 Myr Pongola Supergroup of South Africa2; five or six additional occurrences are known from the later Archean3. The only proposed example from older rocks is of a possibly stromatolitic microfabric from 3,500 Myr cherts in South Africa4; as yet that interpretation has not been supported by the discovery of macroscopic stromatolites. Here we describe stromatolites 3,400-3,500-Myr old from the Pilbara Block of Western Australia. These are the oldest firmly established biogenic deposits now known from the geological record.

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