| Summary: | The here presented data comprises of benthic foraminifera stable carbon (δ¹³C) and oxygen (δ¹⁸O) isotope, bulk sediment neodymium (εNd) isotope and XRF scanning data from IODP Sites U1302/03. The age model was developed by tuning the benthic δ¹⁸O record from Sites U1302/03 to the global benthic δ¹⁸O stack LR04 (Lisiecki and Raymo, 2005, doi:10.1029/2004PA001071). For the stable carbon (δ¹³C) and oxygen (δ¹⁸O) isotope records, we selected 3-8 specimens of either epifaunal living benthic foraminifera species Cibicidiodes wuellerstorfi and Hoeglundia elegans, or shallow infaunal living species Uvigerina peregrina from the >106 μm grain-size fraction. The alternating use of these three species was necessary as none of the species were consistently present throughout the studied sediment interval. Prior to measurement, the selected foraminifera tests were carefully crushed, ultrasonicated in methanol to physically remove contaminations (e.g., clays and nannofossils) and subsequently dried at 50°C. The stable isotope measurements were carried out on a MicroMass Isoprime at the GEOTOP-UQUAM. The precision of the measurements is ±0.05 ‰ for δ¹³C and δ¹⁸O, respectively. The results were calibrated using the international standard NBS-19, and two in-house standards. Isotopic values are reported in standard delta notation (δ) relative to the Vienna Pee Dee Belemnite (VPDB). Interspecies correction between the selected foraminifera species follows Shackleton and Hall (1984, doi:10.2973/dsdp.proc.81.116.1984) by applying a constant fractionation factor of +0.64 ‰ for δ¹⁸O of C. wuellerstorfi and +0.9 ‰ for the δ¹³C values of U. peregrina. H. elegans was corrected to equilibrium by applying a constant fractionation factor of -0.4 ‰ and -1.5 ‰ for δ¹³C and δ¹⁸O, respectively. The high-resolution (~1 cm interval) elemental composition of the sediments at Sites U1302/03 were obtained by non-destructive XRF core scanning at Cambridge University using the Avaatech XRF core scanner. The instrumental settings for the XRF ...
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