(Table T1) Stable carbon and oxygen isotope ratios of benthic foraminifera in the Late Pliocene-Pleistocene section of ODP Site 181-1123 in the Southwest Pacific

Stable isotope records were generated for a late Pliocene-early Pleistocene interval from Ocean Drilling Program (ODP) Site 1123 in the southwest Pacific (41°47 S, 171°30 W; 3290 m water depth). Based on these data, new revisions were made to the shipboard splice and composite section. The isotope records will be used to evaluate the influence of North Atlantic and Southern Ocean deepwater masses on water entering the Pacific in the Deep Western Boundary Current. Three holes were cored at Site 1123, yielding a complete composite section over approximately the last 4.7 m.y. A representative spliced record (“the splice”) was developed aboard ship based on magnetic susceptibility, gamma ray attenuation bulk density, and percent reflectance data from the three adjacent holes (Carter, McCave, Richter, Carter, et al., 1999, doi:10.2973/odp.proc.ir.181.2000). No gaps in the sedimentary record were detected for the multiple-cored section of Site 1123. In addition to the isotope data, postcruise revisions to the splice and composite section based on stable isotope data are described here.

本研究为西南太平洋（南纬41°47′，西经171°30′；水深3290米）大洋钻探计划（Ocean Drilling Program, ODP）1123站位的上新世晚期-更新世早期时段生成了稳定同位素记录（stable isotope records）。基于上述数据，研究人员对船上拼接剖面与复合沉积剖面开展了全新修订。该稳定同位素记录将用于评估北大西洋与南大洋深水团对西边界深层流输入太平洋水体的影响。1123站位共钻取3个钻孔，获得了近470万年的完整复合沉积剖面。研究人员基于3个相邻钻孔的磁化率（magnetic susceptibility）、伽马射线衰减体密度（gamma ray attenuation bulk density）及反射率百分比数据，在船上构建了代表性拼接记录（即“拼接剖面”；Carter、McCave、Richter、Carter等，1999，doi:10.2973/odp.proc.ir.181.2000）。经检测，1123站位多钻孔段的沉积记录未发现间断。除稳定同位素数据外，本文还阐述了基于稳定同位素数据完成的航后拼接剖面与复合沉积剖面修订工作。