The Gunflint chert (1.88 Ga) is a sequence of banded iron formation rocks that are exposed in the Gunflint Range of northern Minnesota and northwestern...

2021. Gunflint chert Archived 2005-06-12 at the Wayback Machine Biogenicity of Microfossils in the Apex Chert "Portion Of Ancient Australian Chert Microstructures...

Stromatolite structures are evident within the Gunflint Iron Formation. The cherts of the Gunflint (the Gunflint Chert) are noted for containing Precambrian microfossils...

oxygen-using organisms. It is also one of the most common fossils in the Gunflint chert. Palmer, Douglas; et al. (2009). Prehistoric Life: The Definitive Visual...

million years ago. The Gunflint Range consists of a basal conglomerate, then the Gunflint Iron formation and the Gunflint Chert with the Rove Formation...

cryptocrystalline form of the mineral quartz, categorized as the variety of chert that occurs in chalk or marly limestone. Historically, flint was widely...

microfossils reveals differential heterotrophic consumption in the ~1.9-Ga Gunflint chert PNAS 110 (20) 8020-8024 doi:10.1073/pnas.1221965110 Raiswell, R. (1997)...

Ancient microfossils have been found in the banded iron formations of the Gunflint Chert. The Boundary Waters area is near the border of the true boreal forest...

microorganism. Kakabekia umbellata was first found in the 1.88 billion year old Gunflint Chert, and in 1966, a living member of the genus, Kakabekia barghoorniana...

million years old, Diskagma was larger than coeval marine microbes of the Gunflint Chert, and more complex than stromatolites. Retallack, G.J.; Krull, E.S.;...