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Abstract We report 143 Nd/ 144 Nd and 87 Sr/ 86 Sr isotopic data for Lower Paleozoic phosphatic brachiopod and conodont fossils. The data appear to represent the isotopic values of Early Paleozoic… (More)
We report initial 87Sr/86Sr values from an Upper Proterozoic carbonate succession from Svalbard and East Greenland. This succession, now tectonically separated into three sequences, is thick,… (More)
Abstract The size of various Phanerozoic paleoceans, determined from paleogeographic maps, provides a framework for assigning e Nd measurements of primary authigenic marine minerals to individual… (More)
The authors are presenting the results of a steady-state geochemical model for the inputs of Sr to the ocean with time. This model uses as data the /sup 87/Sr//sup 86/Sr and /sup 143/Nd//sup 144/Nd… (More)