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

• 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

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 ...