Chemical composition and isotope ratios of basalts from DSDP Sites 417 and 418, West Atlantic Ocean, supplement to: Staudigel, Hubert; Frey, Frederick A; Hart, Stanley R (1979): Incompatible trace-element geochemistry and 87/86Sr in basalts and corresponding glasses and palagonites. In: Donnelly, T, Francheteau, J., Bryan, W., Robinson, P., Flower, M., Salisbury, M., et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Government Print Office), 51,52,53, 1137-1144

Hubert Staudigel, Frederick A Frey & Stanley R Hart
Basalts from Sites 417 and 418 are relatively depleted in light REE compared to a chondritic REE distribution. In the least altered samples, K, Rb, Cs, and Sr and Ba concentrations are lower than in average mid-ocean ridge basalt (MORB). Thus, the source rock for these basalts must have been highly depleted in incompatible elements. However, 87/86Sr ratios in these basalts, even in microscopically fresh glass, are high (> 0.7030). These ratios, compared to normal...
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