Particle-size distributions of Eocene-Oligocene sediment from ODP Site 739, Prydz Bay

This dataset contains measurements of terrigenous particle-size distributions on Eocene-Oligocene sediment from Ocean Drilling Program Site 739 in Prydz Bay. Carbonate, and organic matter were removed through addition of 10mL aliquots of 30% H2O2, 2mL aliquots of 10% HCl to ~50-100mL suspension on a hot plate. Dispersion was through heating with sodium pyrophosphate. Samples were measured on a Malvern Mastersizer 2000 with a Hydro 2000MU (A) accessory, using a Refractive index of 1.544 (Quartz) and an absorption coefficient of 0.9. Results are in (vol. %) per size class, with diameter range equivalent to the diameter of spheres with the same volume as measured particles.本数据集包含南极普里兹湾（Prydz Bay）大洋钻探计划（Ocean Drilling Program）739站位的始新世-渐新世沉积物陆源颗粒粒径分布测量数据。实验前通过向约50~100mL的样品悬浮液中依次加入10mL体积分数为30%的过氧化氢（H₂O₂）、2mL体积分数为10%的盐酸（HCl），并置于电热板上加热，以去除样品中的碳酸盐与有机质；随后通过焦磷酸钠加热处理实现颗粒分散。样品使用搭载Hydro 2000MU（A）附件的马尔文Mastersizer 2000激光粒度仪进行测量，测量时设定折射率为1.544（对应石英）、吸收系数为0.9。最终结果以各粒径等级的体积百分比（vol.%）表示，粒径范围等同于与被测颗粒体积相同的球体直径。