Early Eocene-early Oligocene carbon and oxygen stable isotope data of bulk carbonates from IODP Site U1557

Here, we present carbon and oxygen stable isotope data measured on bulk carbonates samples from Site U1557. This site was drilled during the International Ocean Discovery Program engineering Expedition 390C 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 spans the early Eocene-early Oligocene, according to the shipboard preliminary age model for this site. The data reported here 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.

本处呈现了从 Site U1557 的整体碳酸盐样品中测得的碳和氧稳定同位素数据。该地点是在国际海洋发现计划工程探险390C期间进行钻探的，并构成了南大西洋横切带（SAT）的一部分，该横切带穿过南大西洋脊西部的约31°S位置。根据该地点船载初步年龄模型，数据集涵盖了始新世至渐新世的早期阶段。所报告的数据可用于完善该地点的年龄模型，并与其他海洋盆地的地点进行对比，并在古海洋学相关研究中提供辅助。