Geochemistry of basal dolomitic and Fe-Mn sediments from the Tyrrhenian Sea, supplement to: Robertson, Alastair H F (1990): Pliocene basal dolomitic and Fe-Mn sediments from the Tyrrhenian Sea, western Mediterranean, ODP Leg 107. In: Kastens, KA; Mascle, J; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 107, 129-139

Alastair H F Robertson
In the Tyrrhenian Sea (Western Mediterranean), unusual reddish, soft to lithified, dolomitic sediments up to 45 m thick overlie igneous crust at the base of thick Pliocene-Quaternary deep-sea sediment successions in the Marsili (Site 650) and Vavilov (Site 651) basins. These sediments also overlie the Gortani Ridge, a basaltic Seamount near the base of the Sardinian continental margin (Site 655). At both basinal sites (650, 651), the lowest sediments are dolomitic, with manganese oxide (MnO)...
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