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Microfossils and Precambrian iron-formation

Gene L. LaBerge
Microfossils and Precambrian iron-formation
Geological Society of America Bulletin (1967) 78 (3): 331-342


Petrographic studies reveal that structures of possible organic origin and those believed to be relict microfossils are extremely abundant in many Precambrian iron-formations in the United States, Canada, Australia, and South Africa. The structures are mainly spheroids and ellipsoids that range from about 5-40mu in diameter. Particular forms, however, usually have a narrower size range. Some of the structures appear to be similar to certain forms reported by Barghoorn and Tyler (1965) from the Gunflint chert; others presumably are new forms not previously reported.

ISSN: 0016-7606
EISSN: 1943-2674
Serial Title: Geological Society of America Bulletin
Serial Volume: 78
Serial Issue: 3
Title: Microfossils and Precambrian iron-formation
Author(s): LaBerge, Gene L.
Pages: 331-342
Published: 1967
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
Accession Number: 1967-016748
Categories: General paleontology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
N42°00'00" - N84°00'00", W141°00'00" - W52°00'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute. Reference includes data from Bibliography and Index of North American Geology, U. S. Geological Survey, Reston, VA, United States
Update Code: 1967
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