This dataset is related to the manuscript: "An exceptional record of millennial-scale climate variability in the Southern Iberian margin during MIS 6: Impact on the formation of sapropel S6

This dataset contains oxygen isotope measurements in the planktic foraminifer species Globigerina bulloides and oxygen and carbon isotopes in the benthic foraminifer Cibicidoides pachyderma from IODP Site U1389 (South Iberian Margin) for the penultimate glacial period. Data of the percentage of fine sand content in the sediments from the same Site is also provided. The high resolution oxygen isotope record obtained in the planktic foraminifer species led to recognize millennial-scale climate variability during the penultimate glacial period with unprecedented resolution that could be correlated with similar records from core MD01-2444 in the western Portuguese margin and Antarctic hydrogen isotopes from Epica Dome C. A series of stadial interstadial episodes were regognized that were similar to the Dansgaard-Oestchger events during the last glacial period. Unlike the planktic d18O record that mainly reflects sea surface temperature variability in the NE Atlantic, the Cibicidoides pachyderma benthic foraminifer stable isotope record reflects millennial-scale climate variability in the Mediterranean. Changes in the percent fine sand (weight% of the fine sand fraction 62-150 microns relative to dry bulk weight) was used as a proxy for the strength of the Mediterranean Overflow Water (MOW)本数据集涵盖了采自伊比利亚南部边缘国际大洋发现计划（International Ocean Discovery Program, IODP）U1389站位、用于倒数冰期研究的浮游有孔虫（planktic foraminifer）Globigerina bulloides的氧同位素测量数据，以及底栖有孔虫（benthic foraminifer）Cibicidoides pachyderma的氧、碳同位素数据；同时提供了该站位沉积物的细砂含量百分比数据。 通过该浮游有孔虫获取的高分辨率氧同位素记录，以空前的分辨率识别出倒数冰期内的千年尺度气候变率，该信号可与葡萄牙西部边缘MD01-2444岩芯的同类记录，以及Epica Dome C冰芯的南极氢同位素记录进行对比。研究识别出一系列与末次冰期Dansgaard-Oeschger（Dansgaard-Oeschger）事件相似的冰阶-间冰阶旋回。与主要反映东北大西洋海表温度变化的浮游有孔虫d18O记录不同，Cibicidoides pachyderma底栖有孔虫的稳定同位素记录可反映地中海区域的千年尺度气候变率。细砂百分含量（62~150微米细砂组分占干样总重量的重量百分比）被用作地中海溢流水（Mediterranean Overflow Water, MOW）强度的代用指标。