Element contents and isotope composition of sediments and basalts from DSDP Site 78-543, supplement to: White, William M; Dupré, Bernard; Vidal, Philipp (1985): Isotope and trace element geochemistry of sediments from the Barbados Ridge-Demerara Plain region, Atlantic Ocean. Geochimica et Cosmochimica Acta, 49(9), 1875-1886

Bernard Dupré, William M White & Philipp Vidal
Twenty-four piston core sediment samples and 13 sediments and 3 basalts from DSDP Leg 78 Site 543 were analyzed for Sr, Nd and Pb isotopic compositions. The results show sediment with highly radiogenic Pb (206Pb/204Pb up to 19.8) and rather radiogenic Sr and unradiogenic Nd has been deposited in the region since the Cretaceous. The source of this sediment is probably the Archean Guiana Highland, which is drained by the Orinoco River. Pb and Sr...
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