TY - JOUR
T1 - Life on land in the Precambrian
AU - Horodyski, Robert J.
AU - Knauth, L. Paul
PY - 1994
Y1 - 1994
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0028181517&partnerID=8YFLogxK
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U2 - 10.1126/science.263.5146.494
DO - 10.1126/science.263.5146.494
M3 - Article
C2 - 17754880
AN - SCOPUS:0028181517
SN - 0036-8075
VL - 263
SP - 494
EP - 498
JO - Science
JF - Science
IS - 5146
ER -