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The 29 pages that link to Banded iron formation, each with the reason it gives.

• OxygenRelated: These deposits preserve evidence of changing oxygen levels in ancient oceans.

• Great Oxidation EventRelated: Its iron oxidation records oxygen reacting with dissolved iron in ancient oceans.

• Iron oreBroader topic: These deposits host much of the world’s large iron ore resources.

• ArcheanRelated: Its formation records interactions between dissolved oceanic iron and changing oxygen availability.

• Snowball EarthRelated: Neoproterozoic iron deposits have been interpreted as evidence of unusual ocean chemistry under extensive ice.

• Iron oxideRelated: Its iron-rich layers preserve major deposits of iron oxides, especially hematite and magnetite.

• MagnetiteRelated: Magnetite is a common iron-bearing mineral in these major iron deposits.

• HematiteBroader topic: These formations contain vast deposits of hematite-bearing iron ore.

• Mineral explorationBroader topic: Its characteristic geology and magnetic signature can guide iron-ore exploration.

• Ore depositBroader topic: Ancient chemical sedimentation produced vast iron resources that later became ore.

• PrecambrianBroader topic: Its deposits record interactions among oceans, iron, and changing oxygen levels.

• Greenstone beltBroader topic: These chemical sediments occur among the volcanic and sedimentary rocks of many belts.

• Pilbara CratonNarrower topic: The Hamersley Basin contains some of the world’s largest and best-known examples.

• Iron(III) oxideRelated: Many large hematite deposits formed through geological alteration of these iron-rich rocks.

• Isua Greenstone BeltNarrower topic: Isua’s iron formations preserve clues about ancient seawater and oxidation.

• PaleoproterozoicRelated: Its iron chemistry records interactions between rising oxygen and dissolved oceanic iron.

• Faint young Sun paradoxRelated: Its formation records changing ocean chemistry and oxygenation during the Sun’s faint era.

• Oxygenation of Earth's atmosphereBroader topic: Its iron oxides record oxygen reacting with dissolved iron in ancient oceans.

• ChertBroader topic: Their silica-rich layers commonly consist of chert interbedded with iron minerals.

• Nuvvuagittuq Greenstone BeltRelated: The belt’s iron formations contribute evidence about early ocean chemistry and oxygenation.

• SideriteRelated: Iron carbonate minerals including siderite occur in some iron formations and inform debates about ancient oceans.

• Archean tectonicsBroader topic: Seafloor hydrothermal sources associated with Archean tectonics supplied their iron.

• Huronian glaciationRelated: Its formation reflects changes in ocean chemistry during the broad interval of atmospheric oxygenation.

• Iron(II,III) oxideRelated: Magnetite is a common iron mineral in these major geological iron deposits.

• Oxygen cycleRelated: These deposits preserve evidence of oxygen reacting with dissolved iron in early oceans.

• MesoarcheanBroader topic: Some Mesoarchean deposits record interactions among iron, ocean water, and microbial activity.

• NeoarcheanBroader topic: These deposits record changing ocean chemistry as oxygen began reacting with dissolved iron.

• Geological history of oxygenRelated: Dissolved iron consumed oxygen and left a geological record of early ocean chemistry.

• Western PlateauRelated: These deposits host much of the region’s exceptionally rich iron ore.