Stable carbon and oxygen isotope ratios across the Cretaceous/Tertiary boundray on the Walvish Ridge, supplement to: Alcalá-Herrera, Javier A; Grossman, Ethan L; Gartner, Stefan (1992): Nannofossil diversity and equitability and fine-fraction d13C across the Cretaceous/Tertiary boundary at Walvis Ridge Leg 74, South Atlantic. Marine Micropaleontology, 20(1), 77-88

Javier A Alcalá-Herrera, Ethan L Grossman & Stefan Gartner
The isotopic composition and diversity of nannofossils were studied in cores from the Deep Sea Drilling Project (DSDP) Sites 525A, 527, 528, and 529 from the Walvis Ridge, South Atlantic to better understand the changes which occurred across the Cretaceous/Tertiary boundary (K/T boundary). The stratigraphic range of the samples is from the Arkhangelskiella cymbiformis Zone in the Maastrichtian to the Heliolithus kleinpelli Zone in the Danian. Nannofossil diversity was high (Shannon-Weaver diversity index, 'H= 2.5-3)...
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