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TitleClay oncoids and crypto-microbial laminites from the Late Paleoproterozoic Manitou Falls Formation, Athabasca Basin, Saskatchewan
AuthorYeo, G; Percival, J BORCID logo; Jefferson, C W; Bernier, S; Hunt, P
SourceSummary of investigations, volume 2, Saskatchewan Geological Survey; Saskatchewan Energy and Mines Miscellaneous Report 2002-4.2, 2002, 9 pages Open Access logo Open Access
Alt SeriesGeological Survey of Canada, Contribution Series 2003292
PublisherGovernment of Saskatchewan
MediaCD-ROM; on-line; digital
File formatpdf
NTS74F/15; 74H/15
AreaHook Lake; McArthur River area; Read Lake
Lat/Long WENS-109.0000 -108.5000 58.0000 57.7500
Lat/Long WENS-104.5000 -104.5000 58.0000 57.7500
Subjectssurficial geology/geomorphology; general geology; laminations; stromatolites; biogenic structures; oncolites; Athabasca Basin
Illustrationsgeological sketch maps; logs; cross-sections; photographs; photomicrographs
ProgramExploration Science and Technology (EXTECH IV) Initiative, 2000-2003
Released2002 01 01
AbstractBean-sized, laminated structures from basal Manitou Falls strata near Hook Lake in the Athabasca Basin are reinterpreted to be clay oncoids which grew in ephemeral pools or lakes in a flashy river system. Comparable microlaminated structures in microcrystalline quartz from the McArthur River area are also of probable microbial origin. These structures add to a growing body of evidence for life in Proterozoic non-marine environments and contribute to our understanding of regional paleo-environments in early Manitou Falls time.

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