Life on Land in the Precambrian

Details Life on Land in the Precambrian Life on Land in the Precambrian

Jan 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994sci...263..494h&link_type=abstract

Science, Volume 263, Issue 5146, pp. 494-498

Physics

22

Scientific paper

Microfossils have been discovered in cavity-fill and replacement silica that occurs between chert-breccia clasts in 1200-million-year-old paleokarst at the top of the Mescal Limestone, central Arizona, and in ~800-million-year-old paleokarst at the top of the Beck Spring Dolomite, southeastern California. Microbial communities on Precambrian (>550 million years ago) land may have been extensive enough to affect weathering, erosion, sedimentation, and geochemical processes.

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