Geology and geochemistry of uranium in marine black shales--A review

Abstract

uranium Continued Mechanisms of enrichment Continued Hydrogen sulfide Continued Uranium precipitated by hydrogen sulfide in Chattanooga shale____ __-_ 90 Relation of pyrite to uranium.___________ 91 Bottom water of Norwegian fjords and Baltic sea_._ _ 92 Possible extrapolations and interpretations. 93 Phosphate. ___________-_____________ 95 Relation to uranium..._____________ __ 95 Geochemical conditions for deposition....-96 Cycle of deposition__ ______ __ 97 Other chemical variables__. _______ 98 Acidity_______________