(Table 1) Pore water isotopes from DSDP Hole 74-525B, with respect to the Vienna-SMOW standard

DOI

During the coring of Hole 525B with the hydraulic piston corer, a number of sediment samples were squeezed and the pore waters retained for stable isotope study. Both 18O/16O and D/H ratios were determined on the same samples. Within the limits of experimental error the measurements are consistent with the variations resulting from evaporation-precipitation processes; there is no evidence that diagenetic processes in the sediment affected the isotopic composition of the waters, which therefore reflect changes in the isotopic composition of the ocean during the Cenozoic. The data are consistent with the hypothesis that a change of about 0.9 per mil (18O/16O) occurred during the middle Miocene, reflecting the growth of the Antarctic ice sheet at that time.

Supplement to: Bath, Adrian; Shackleton, Nicholas J (1984): Oxygen and hydrogen isotope studies in squeezed pore waters, Deep Sea Drilling Project Leg 74, Hole 525B: Evidence for mid-Miocene ocean isotopic change. In: Moore, TC Jr; Rabinowitz, PD; et al. (eds.), Initial Reports of the Deep Sea Drilling Project (U.S. Govt. Printing Office), 74, 697-699

Identifier
DOI https://doi.org/10.1594/PANGAEA.810514
Related Identifier https://doi.org/10.2973/dsdp.proc.74.121.1984
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.810514
Provenance
Creator Bath, Adrian; Shackleton, Nicholas J
Publisher PANGAEA
Publication Year 1984
Rights Creative Commons Attribution 3.0 Unported; https://creativecommons.org/licenses/by/3.0/
OpenAccess true
Representation
Resource Type Supplementary Dataset; Dataset
Format text/tab-separated-values
Size 189 data points
Discipline Earth System Research
Spatial Coverage (2.985 LON, -29.071 LAT); South Atlantic/CREST