Question

breif description on BANDED IRON​

Answer 1

Answer:

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 laterally for several hundred kilometers. 

Explanation:

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Answer 2

Answer:

Banded iron formation is more precisely defined as chemically precipitated sedimentary rock containing greater than 15% iron. ... In addition to the iron oxides (hematite and magnetite), the iron sediment may contain the iron-rich carbonates, siderite and ankerite, or the iron-rich silicates, minnesotaite and greenalite.

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