Middle Miocene seawater isotope evolution at IODP Site 307-U1318

DOI

Mid-Miocene (16.6 – 12.8 Ma) hydrogen isotopes of alkenones and sea temperatures are obtained from the sediment record of Integrated Ocean Discovery Program (IODP) Expedition 307, Site U1318 drilled in the Porcupine Basin, north east Atlantic at a water depth of ~ 400 m. Surface seawater isotopes are calculated based on the hydrogen isotopic compositions of C37 long chain alkenones (δ2HC37) with the environment calibration of Gould et al. (2019, doi:10.1016/j.gca.2018.12.004). The bottom seawater isotopes are based on oxygen isotopes of benthic foraminifera (record from Quaijtaal et al., 2018, doi:10.1017/S0016756816001278) and subsurface temperature (subT) estimates (TEX86H). We applied the calibration of Cramer et al. (2011, doi:10.1029/2011JC007255) and calculated subT with the 0-200 m equation of Kim et al. (2012, doi:10.1029/2012GL051157).

Identifier
DOI https://doi.pangaea.de/10.1594/PANGAEA.967156
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.967156
Provenance
Creator Hättig, Katrin ORCID logo; Varma, Devika ORCID logo; Louwye, Stephen ORCID logo; Schouten, Stefan; van der Meer, Marcel T J ORCID logo
Publisher PANGAEA
Publication Year 2024
Funding Reference European Commission https://doi.org/10.13039/501100000780 Crossref Funder ID 847504 https://cordis.europa.eu/project/id/847504 Local training network: Netherlands Earth System Science Centre: “NESSC”
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Representation
Resource Type Dataset
Format text/tab-separated-values
Size 1310 data points
Discipline Earth System Research
Spatial Coverage (-11.551W, 51.436S, -11.550E, 51.436N)