权威例句
A Transmission Electron Microscopy Study of Silica andMicroorganisms from the Gunflint Chert: These structurally preserved Precambrian fossils from Ontario are the most ancient organisms...Significance of the Gunflint (Precambrian) MicrofloraSm-Nd isochron-age and provenance of the argillites of the Gunflint Iron Formation in Ontario, CanadaThe age of the Gunflint Formation, Ontario, Canada: single zircon UPb...The Gunflint microbiota ☆Petrology of the Low-Grade Rocks of the Gunflint Iron-Formation, Ontario-MinnesotaTaphonomy of very ancient microfossils from the ∼3400 Ma Strelley Pool Formation and ∼1900 Ma Gunflint Formation: New insights u...Stable isotope geochemistry of cherts and carbonates from the 2.0 Ga Gunflint Iron Formation: implications for the depositional sett...Mineralogy and Petrology of the Gunflint Iron Formation, Minnesota-Ontario: Correlation of Compositional and Assemblage Variations a...
