Life on land in the Precambrian

Robert J. Horodyski, L. Paul Knauth

Research output: Contribution to journalArticlepeer-review

173 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)494-498
Number of pages5
Issue number5146
StatePublished - 1994

ASJC Scopus subject areas

  • General


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