Publication Date:
2023-05-12
Description:
Rhenium contents were determined in 12 samples of oceanic phosphorites using kinetic and ICP-MS techniques, the latter of which appeared to be more correct. Rhenium contents in phosphorites from the ocean floor varied from 3 to 50 ppb, whereas that in phosphorites from the Christmas and Nauru islands are 1.3 and less 〈1 ppb, respectively and are similar to average rhenium content in sedimentary rocks (about 1 ppb). Rhenium does not show any relationship with phosphorus, aluminosilicates, or iron and manganese oxyhydroxides, but a correlation trend with organic carbon and total sulfur (partially bound in pyrite) is revealed. Enclosing reduced biogenic sediments enriched in hydrogenic rhenium serve as a primary rhenium source for phosphorites. Rhenium concentration in phosphorites possibly depends on duration of their presence in reduced environment and on conditions of their subsequent exposure on the ocean floor.
Keywords:
Archive of Ocean Data; ARCOD; Bat-2001-1215; Bat-2001-195; Bat-2001-2046; Bat-2001-250; Bat-2001-3150; Bat-2001-540; Bat-2001-770; Bat-2001-L-412; Bat-2001-N-3; Blake Plateau, Atlantic Ocean; Chile shelf; Christmas Island; Inner Namibia shelf; Morocco shelf; Nauru Island; Outer Namibia shelf; Yamato Rise, Sea of Japan
Type:
Dataset
Format:
application/zip, 2 datasets
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