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Iron isotopic variations of the Cryogenian banded iron formations: A . . . The Fe isotope composition of banded iron formation (BIF) is regarded as a powerful tracer in paleoceanography, and the Cryogenian banded iron formation associated with “Snowball Earth Events” provides a precious record of environmental change in the Neoproterozoic
条带状铁建造消失之谜:铁-硅互层机制研究进展与展望 Banded iron formations (BIFs) are chemical sediments consisting of rhythmic Fe-rich and Si-rich laminae that are millimeters to centimeters thick BIFs not only are an important iron resource, but also record the Earth's early evolution, early microbial activity, and atmosphere-ocean redox status
Fe isotope compositions of banded iron formation from Anshan-Benxi area . . . Relative to IRMM-014, BIFs show heavy Fe isotope enrichment, implying that the Fe from hydrothermal source was only partially oxidized The variations in Fe isotope compositions may be explained in terms of different degree of precipitation
Iron and Carbon Isotope Constraints on the Formation Pathway of Iron . . . Banded iron formations (BIFs) are enigmatic chemical sedimentary rocks that chronicle the geochemical and microbial cycling of iron and carbon in the Precambrian However, the formation pathways of Fe carbonate, namely siderite, remain disputed
(PDF) Banded Iron Formation - ResearchGate Here we use the combination of geochemistry and Sm-Nd isotopes on a layer-by-layer basis to interpret the relative contributions of hydrothermal, hydrogenous and terrestrial input to one of the
Conundrum of the iron isotopic fractionation: banded iron formation . . . Using this statistic description, we evaluate the iron isotopic data of the Neoproterozoic BIF of Banda Alta Formation (Jacadigo Group), from the Urucum district, testing for anomalies values using F test, T test and ANOVA test
Banded Iron Formation - Springer Overview Banded iron formations (BIFs) comprise the largest iron resource on Earth They formed throughout much of the Precambrian ( 3,800543 Ma), reaching their maximum abundance between 2,700 and – 2,400 Ma ago Numerous examples can be found on almost every continent