(Table 1) Oxygen and carbon isotope ratios of benthic foraminifera of DSDP Holes 12-119 and 48-401

We present here oxygen and carbon isotopic records of Eocene to Oligocene benthic foraminifera from two Bay of Biscay Deep Sea Drilling Project (DSDP) sites (119 and 401). d18O of benthic foraminifera increases 1.9 per mil from a middle Eocene minimum (Zones P10-P11) to an earliest Oligocene maximum...

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Bibliographic Details
Main Authors: Miller, Kenneth G, Curry, William B
Format: Dataset
Language:English
Published: PANGAEA 1982
Subjects:
12-119
48-401
AGE
Biozone
Catapsydrax spp.
δ13C
δ18O
Cibicidoides spp.
Deep Sea Drilling Project
DRILL
Drilling/drill rig
DSDP
DSDP/ODP/IODP sample designation
Event label
Glomar Challenger
Gyroidinoides spp.
Isotope ratio mass spectrometry
Leg12
Leg48
North Atlantic/SEAMOUNT
North Atlantic/TERRACE
Sample code/label
North Atlantic
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.770304
https://doi.org/10.1594/PANGAEA.770304
Description
Summary:We present here oxygen and carbon isotopic records of Eocene to Oligocene benthic foraminifera from two Bay of Biscay Deep Sea Drilling Project (DSDP) sites (119 and 401). d18O of benthic foraminifera increases 1.9 per mil from a middle Eocene minimum (Zones P10-P11) to an earliest Oligocene maximum (Zone NP21). Approximately 1.4 per mil of the increase in benthic foraminiferal d18O occurs during the late Eocene to earliest Oligocene (Zones P15/16-NP21). Previous results from other North Atlantic DSDP sites (400A and 398) have significantly lower d18O values of benthic foraminifera, some by as much as 2 per mil (Vergnaud-Grazzini et al., 1978; 1989, doi:10.2973/dsdp.proc.48.119.1979; Vergnaud-Grazzini, 1979, doi:10.2973/dsdp.proc.47-2.117.1979 ). We believe that these differences result from diagenetic alteration of the sediments in the deeper-buried Sites 400A and 398.

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