Banded iron formation
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Banded iron formations are distinctive units of sedimentary rock consisting of alternating layers of iron oxides and iron-poor chert. They can be up to several hundred meters in thickness and extend l
Banded iron formation, Karijini National Park, Western Australia
2.1 billion year old rock from North America showing banded iron formation, displayed in Dresden, Saxony, Germany
Banded iron formation from the Barberton Greenstone Belt, South Africa
Close-up of banded iron formation specimen from Upper Michigan