Rare earth elements, iron formations and sea water

Details Rare earth elements, iron formations and sea water Rare earth elements, iron formations and sea water

Dec 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978gecoa..42.1845g&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 42, Issue 12, pp.1845-1850

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8

Scientific paper

Iron formations probably formed as chemical sediments when an Fe-rich solution entered the sedimentary environment. The REE patterns of such sediments are affected by the amount and type of precipitating and detrital phases, the REE pattern of the iron source solution, the REE pattern of the sea water into which the solution flows, and the mixing which takes place between input solution and sea water. What is known about the different types of iron formation suggests that all of these factors may vary from one type to another. Therefore, variations in REE patterns cannot be attributed solely to changes in sea water REE patterns. Comparison of the REE patterns of Archean and Ordovician iron formations of the Algoma type shows that similar iron formations have similar REE patterns regardless of age. This implies similar genetic histories.

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