Early Eocene-early Oligocene carbon and oxygen stable isotope data of bulk carbonates from IODP Site U1558

Here, we present carbon and oxygen stable isotope data measured on bulk carbonates samples from Site U1558. The site was drilled during the International Ocean Discovery Program engineering Expedition 390C and Expedition 393 and is part of the South Atlantic Transect (SAT), a transect drilled across the western side of the southern Mid-Atlantic Ridge at ~31°S. The data set was built analyzing samples from Site U1558 Holes A and F. The data reported here span the early Eocene-early Oligocene, according to the shipboard preliminary age model for this site, and can be used to refine the age model for this site, to correlate this site with sites from other ocean basins, and could be of help in paleoceanography-related investigations.

本项研究呈现了在 Site U1558 整体碳酸盐样品中测得的碳和氧稳定同位素数据。该地点在“国际海洋发现计划”工程探险390C和393探险期间进行钻探，并构成了南大西洋横断面（SAT）的一部分，该横断面穿越了南大西洋脊西部约31°S的位置。数据集是通过分析 Site U1558 的 A 和 F 孔样品构建而成。根据该地点船载初步年龄模型，所报告的数据覆盖了始新世早期至渐新世早期，可用于细化该地点的年龄模型，将该地点与来自其他海洋盆地的地点进行对比，且可能有助于与古海洋学相关的调查研究。（Carbon and oxygen stable isotope data, bulk carbonates samples, Site U1558, International Ocean Discovery Program, engineering Expedition 390C, Expedition 393, South Atlantic Transect (SAT), southern Mid-Atlantic Ridge, early Eocene-early Oligocene, preliminary age model, refine the age model, correlate, paleoceanography-related investigations）