banded iron formation wikipedia - EAS
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See all on Wikipediahttps://en.wikipedia.org/wiki/Banded_iron_formationBanded iron formations (also known as banded ironstone formations or BIFs) 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 laterally for several hundred kilometers. Almost all of … See more
A typical banded iron formation consists of repeated, thin layers (a few millimeters to a few centimeters in thickness) of silver to black iron oxides, either magnetite (Fe3O4) or hematite (Fe2O3), alternating with bands of iron-poor See more
• Harnmeijer, J.P. (2003). "Banded Iron Formation: A Continuing Enigma of Geology". University of Washington. Archived from the original on 8 September 2006. See more
Banded iron formations are almost exclusively Precambrian in age, with most deposits dating to the late Archean (2800-2500 Ma) with a … See more
Banded iron formation provided some of the first evidence for the timing of the Great Oxygenation Event, 2,400 Ma. With his 1968 paper on the early atmosphere and oceans of the earth, See more
• Iron-rich sedimentary rocks – Sedimentary rocks containing 15 wt.% or more iron
• Stromatolite – Layered sedimentary structure formed by … See more• Media related to Banded iron formation at Wikimedia Commons
• Banded-iron formation at the Encyclopædia Britannica
• "Jaspilite" . Encyclopedia Americana. 1920. See moreWikipedia text under CC-BY-SA license- https://nl.wikipedia.org/wiki/Banded_iron_formation
Banded iron formations (ook bekend als banded ironstone formations, banded iron beds of onder de afkorting BIF's) zijn een speciaal soort zeer oude sedimentaire gesteenten. Ze bestaan uit dunne laagjes ijzeroxiden (magnetiet of hematiet) afgewisseld met vuursteen of schalieachtige lagen. Banded iron formations komen voor in een aantal van de oudste geologische formaties, so…
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- https://simple.wikipedia.org/wiki/Banded_iron_formation
WebThe formations are abundant around the time of the Great Oxygenation Event, 2,400 mya. [4] They become less common after 1,800 mya. The total amount of oxygen locked up in …
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- https://commons.wikimedia.org/wiki/Category:Banded_iron_formation
WebBanded iron formation (Biwabik Iron-Formation, Paleoproterozoic, ~1.878 Ga; Mesabi Iron Range, northeastern Minnesota, USA) 3 (23400739032).jpg 4,000 × 3,000; 3.7 MB …
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WebBanded iron formation (BIF) consists of finely interstratified chemical sediments rich in iron oxides, carbonates, and/or silicates that are precursor deposits to the world's largest iron …
- https://tok.fandom.com/wiki/Banded_iron
WebBanded iron formations (also known as banded ironstone formations or BIF s) are distinctive units of sedimentary rock consisting of alternating layers of iron oxides and …
- https://en.wikipedia.org/wiki/Iron-rich_sedimentary_rocks
WebIron-rich sedimentary rocks are sedimentary rocks which contain 15 wt.% or more iron. However, most sedimentary rocks contain iron in varying degrees. The majority of these …
- https://de.wikipedia.org/wiki/Bändererz
WebBändererze entstanden im Archaikum (vor 3800 bis 2500 Mio. Jahren) und im Proterozoikum (vor 2500 bis 1800 Mio. Jahren). Das im Zuge untermeerischen …
- https://en.wikipedia.org/wiki/Animikie_Group
WebThese iron compounds precipitated from the sea water in varying proportions with chert, producing banded-iron formations. Banded-iron formations occur in several ranges around the margins of this basin, five …
- https://en.wikipedia.org/wiki/Gunflint_Chert
WebThe Gunflint chert is a sequence of banded iron formation rocks that are exposed in the Gunflint Range of northern Minnesota and northwestern Ontario along the north shore of Lake Superior. The Gunflint Chert is of …
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