The banded iron layers are formed in sea water when oxygen is released by photosynthetic cyano-bacteria. The oxygen then combines with dissolved iron in ocean to form insoluble iron oxides, which precipitated out, forming a thin layer of banded iron formation on ocean floor.
1.2.1 Mineral Content
Hematite, Magnetite, Quartz
1.2.2 Compound Content
Fe, Iron(III) Oxide, Silicon Dioxide
19% Sedimentary Rocks Rocks have it !
1.3.2 Types of Metamorphism
78% Sedimentary Rocks Rocks have it !
1.3.4 Types of Weathering
86% Sedimentary Rocks Rocks have it !
1.3.6 Types of Erosion
Coastal Erosion, Wind Erosion