Os and Re concentrations and Os isotope ratios for DSDP and ODP metalliferous sediments from the Pacific Ocean (Table 1), supplement to: Peucker-Ehrenbrink, Bernhard; Ravizza, Gregory E; Hofmann, Albrecht W (1995): The marine 187Os/186Os record of the past 80 million years. Earth and Planetary Science Letters, 130(1-4), 155-167

Bernhard Peucker-Ehrenbrink, Gregory E Ravizza & Albrecht W Hofmann
We report new 187Os/186Os data and Re and Os concentrations in metalliferous sediments from the Pacific to construct a composite Os isotope seawater evolution curve over the past 80 m.y. Analyses of four samples of upper Cretaceous age yield 187Os/186Os values of between 3 and 6.5 and 187Re/186Os values below 55. Mass balance calculations indicate that the pronounced minimum of about 2 in the Os isotope ratio of seawater at the K-T boundary probably reflects...
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