Species-specific benthic foraminifera stable carbon isotope ratio offset of ODP Site 145-883 ...

Here we present stable oxygen and carbon isotope measurements of C. wuellerstorfi and U. peregrina in discrete samples from ODP site 883. Samples were freeze dried, weighed, soaked in water for 24 hours to disaggregate, and wet sieved using a 150 μm mesh sieve. Samples were then dried at 40°C. Selec...

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Bibliographic Details
Main Authors: Novak, Joseph B, Caballero-Gill, Rocio P, Rose, Rebecca, Herbert, Timothy D, Dowsett, Harry J
Format: Dataset
Language:unknown
Published: PANGAEA 2024
Subjects:
Age model
Alkenones
Benthic foraminifera assemblages
Benthic foraminiferal stable isotopes
Calcium Carbonate content
Composite splice
diatoms
ODP 883
ODP 887
stable carbon isotopes δ13C
stable oxygen isotopes
Subarctic North Pacific
Uk'37 sst and C37total
Event label
Sample code/label
DEPTH, sediment/rock
AGE
Cibicidoides wuellerstorfi
Cibicidoides wuellerstorfi, δ13C
Cibicidoides wuellerstorfi, δ18O
Uvigerina proboscidea
Uvigerina proboscidea, δ13C
Uvigerina proboscidea, δ18O
Drilling/drill rig
DSDP/ODP/IODP sample designation
Counting 150-355 µm
Mass spectrometer Finnigan MAT 252
adjusted
Leg145
Joides Resolution
Ocean Drilling Program ODP
Subarctic
Online Access:https://dx.doi.org/10.1594/pangaea.967362
https://doi.pangaea.de/10.1594/PANGAEA.967362
Description
Summary:Here we present stable oxygen and carbon isotope measurements of C. wuellerstorfi and U. peregrina in discrete samples from ODP site 883. Samples were freeze dried, weighed, soaked in water for 24 hours to disaggregate, and wet sieved using a 150 μm mesh sieve. Samples were then dried at 40°C. Select genera and species were picked and comprehensively counted from the 150–355 μm fraction. 106 samples were run in duplicate or better. Specimens selected for isotopic analysis were cleaned with 70 μL ethanol and sonicated for 30 seconds. Ethanol was drawn off with a pipette, and specimens were dried overnight at room temperature. Cibicidoides mundulus was used in 2 samples where Cibicidoides wuellerstorfi was not sufficiently abundant to provide a good signal for mass spectrometry. Isotope ratios were quantified at the Brown University stable isotope facility with a Finnigan Mat 252 with Carbonate Kiel III autosampler, in which individual samples were reacted with 70°C H3PO4. Cibicidoides δ18O values were ...

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