Stable isotope ratios of benthic and planktonic foraminifera from Miocene to Pliocene sediments of DSDP Hole 7-62A on the Eauripik Rise, Pacific Ocean (Table 1) ...

Oxygen and carbon isotope analyses show that the biserial forarniniferal genus Streptochilus, which was originally described from pelagic sediments on the Eauripik Rise and Ontong Java Plateau, lived deep in the upper water column within the oxygen minimum layer. The species of Streptochilus average...

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Bibliographic Details
Main Authors: Resig, Johanna M, Kroopnick, Peter M
Format: Dataset
Language:English
Published: PANGAEA 1983
Subjects:
DEPTH, sediment/rock
AGE
Sample code/label
Epoch
Planktic foraminifera zone
Globigerinoides sacculifer, δ13C
Globigerinoides sacculifer, δ18O
Temperature, calculated
Globorotalia tumida, δ13C
Globorotalia tumida, δ18O
Streptochilus globulosum, δ13C
Streptochilus globulosum, δ18O
Foraminifera, benthic δ13C
Foraminifera, benthic δ18O
Siphouvigerina sp., δ13C
Siphouvigerina sp., δ18O
Uvigerina spp., δ13C
Uvigerina spp., δ18O
Drilling/drill rig
DSDP/ODP/IODP sample designation
Isotope ratio mass spectrometry
Calculated from stable oxygen isotopes
Leg7
Glomar Challenger
Deep Sea Drilling Project DSDP
Planktonic foraminifera
Online Access:https://dx.doi.org/10.1594/pangaea.682292
https://doi.pangaea.de/10.1594/PANGAEA.682292
Description
Summary:Oxygen and carbon isotope analyses show that the biserial forarniniferal genus Streptochilus, which was originally described from pelagic sediments on the Eauripik Rise and Ontong Java Plateau, lived deep in the upper water column within the oxygen minimum layer. The species of Streptochilus average from 4 to 19% of the foraminiferal assemblages in which benthic forms compose less than 1 or 2%. Specimens of Streptochilus are selectively dissolved when in contact with the bottom water mass. Their rapid evolutionary turnover of less than a few million years and their wide areal distribution in the equatorial Indo-Pacific are indicative of planktonic foraminifera. Aside from usefulness of the species of Streptochilus as stratigraphic indices, these Neogene biserial planktonic foraminifera are potential indices of paleoceanographic stratification. ... : Ages are approximated, Temperature calculation: T (∞C) = 16.5-4.3 * (deltaO18 O3) + 1.4 * (deltaO18 O3)**2, based on the revised paleotemperature equation of Epstein et al. (1953) ...

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