Hydrogen isotopic composition of alkenones and oxygen isotopes of benthic foraminifera from ODP Site 202-1235

Hydrogen isotopic compositions of C37 long chain alkenones (δ2HC37) have been proposed as a proxy for past seawater salinity and applied in several regions. However, previous studies were based solely on a single core and often suggested unlikely large changes in salinity. Here we present a new δ2HC37 record, in combination with oxygen isotopes of benthic foraminifera from the same samples, from a sediment core from the Chilean margin (ODP site 1235). The observed negative shift in δ2HC37 of 20‰ during deglaciation was identical to that of the nearby located, but deeper, ODP core 1234 (Weiss et al., 2019), suggesting a regionally consistent shift in δ2HC37. Here we present an isotope dataset spanning 0.15-94.43 mbsf. The age model of Haettig et al., 2023 covers the last 40.000 years spanning 0.15-49.50 mbfs.

Data and Resources

This dataset has no data

Cite this as

Hättig, Katrin, Varma, Devika, van der Meer, Marcel T J, Schouten, Stefan (2023). Dataset: Hydrogen isotopic composition of alkenones and oxygen isotopes of benthic foraminifera from ODP Site 202-1235. https://doi.org/10.1594/PANGAEA.958880

DOI retrieved: 2023

Additional Info

Field Value
Imported on November 30, 2024
Last update November 30, 2024
License CC-BY-4.0
Source https://doi.org/10.1594/PANGAEA.958880
Author Hättig, Katrin
Given Name Katrin
Family Name Hättig
More Authors
Varma, Devika
van der Meer, Marcel T J
Schouten, Stefan
Source Creation 2023
Publication Year 2023
Resource Type text/tab-separated-values - filename: 202-1235_isotope
Subject Areas
Name: BiologicalClassification

Name: Paleontology

Related Identifiers
Title: Glacial-interglacial sea water isotope change near the Chilean Margin as reflected by δ 2 H of C37 alkenones
Identifier: https://doi.org/10.5194/egusphere-2023-1042
Type: DOI
Relation: References
Year: 2023
Authors: Hättig Katrin , Varma Devika , Schouten Stefan , van der Meer Marcel T J , Hättig Katrin , Varma Devika , van der Meer Marcel T J , Reichart Gert-Jan , Schouten Stefan , Varma Devika , Hättig Katrin , van der Meer Marcel T J , Reichart Gert-Jan , Schouten Stefan .

Title: Age model for ODP Leg 202 Site 1235 and Site 1234
Identifier: https://doi.org/10.1594/PANGAEA.957070
Type: DOI
Relation: References
Year: 2023
Authors: Hättig Katrin , Varma Devika , Schouten Stefan , van der Meer Marcel T J , Hättig Katrin , Varma Devika , van der Meer Marcel T J , Reichart Gert-Jan , Schouten Stefan , Varma Devika , Hättig Katrin , van der Meer Marcel T J , Reichart Gert-Jan , Schouten Stefan .

Title: SST Proxies Chilean (ODP Leg 202 Site 1235 and Site 1234) and Angola Margin (ODP Leg 175 Site 1078 and Site 1079)
Identifier: https://doi.org/10.1594/PANGAEA.957090
Type: DOI
Relation: References
Year: 2023
Authors: Hättig Katrin , Varma Devika , Schouten Stefan , van der Meer Marcel T J , Hättig Katrin , Varma Devika , van der Meer Marcel T J , Reichart Gert-Jan , Schouten Stefan , Varma Devika , Hättig Katrin , van der Meer Marcel T J , Reichart Gert-Jan , Schouten Stefan .