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During DSDP Leg 74 in the South Atlantic, 11 holes were drilled at 5 sites (525-529) on the eastern end of Walvis Ridge. The sediments recovered range in age from late Campanian or early Maestrichtian to Holocene. This chapter deals only with the Neogene to Holocene interval. The calcareous nannofossils over this interval have been corroded as well as overgrown, but a precise biostratigraphy is possible at all sites because most of the key index species are present.

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