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Topic: Miscellaneous
Number of pages / Number of words: 5 / 1262
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These deposits of marine hematite and quartz represent a precipitation of dissolved iron from sea water as the dissolved oxygen content of the water increased. After 1800 mya, Banded iron formations are rare, but terrestrial red beds are common for the first time suggesting that iron is being oxidised and precipitated in soils and rocks on land in the source area of sediments instead of being dissolved and carried into the oceans in its unoxidised form...


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Thus, it has been reasoned that the BIF-red bed transition marks the rise of atmospheric oxygen. Complimentary information comes from detrital uraninite in Archean and earliest Proterozoic alluvial rocks. Because this uranium mineral can survive prolonged transport only in media containing little or no oxygen, the lack of detrital uraninite deposits younger than 2300 ma also points towards a significant environmental transition (Roscoe,1969)...


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The Iron Heel Iron Shamrock Mrwhy Do Sales Of Bottled Water Grow Every Year Despite Of The Well-Known Fact That It Is Produced From The Same Tap Water? Of Iron and Men Banded Iron Formations And The Pumpin Iron Civilization and the importance of iron and oxygen Element IRON Faster Dissolved Oxygen Test Kit Iron Pyrite Iron modified winkler method for dissolved oxygen determination Phosphates and dissolved oxygen More urgent action needs to be taken by the Australian people and all levels of government to preserve Australia’s scarce water resources, replenish its natural aquifers and promote subsidies to encourage rain water tank collection and water rec... Water; How Much Fresh Water is Available for Human Drinking Needs

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