Recent diatom and foraminiferal assemblages in surficial sediments of Prydz Bay, Antarctica.

Surficial bottom sediments collected from Prydz Bay, Antarctica contain three sedimentary facies, four foraminiferal faunas, and two diatom floras. A sandy diamict (Facies Ds) is deposited by iceberg rafting and reworked by currents of the Prydz Bay Cyclonic Gyre. A massive mud (Facies Mm) represents the sediments being supplied to the Bay and could provide a high resolution record of the Quaternary in Antarctica. A carbonate sand (Facies Cs) is a modern cold water carbonate deposited under special conditions on the outer continental shelf.The presence of planktonic flora and fauna, and variations in sedimentological parameters are consistent with the physical oceanographic evidence for a large cyclonic gyre operating in the Bay.The fields in this dataset are:Sight Device CommentsDepth (m)SampleForamDiatomPercentages of Individual speciesNumber of individuals counted.Plankton

南极普里兹湾（Prydz Bay）采集的表层底质沉积物涵盖三种沉积相、四类有孔虫动物群以及两种硅藻植物群。砂质混杂堆积（沉积相Ds）由冰山浮运作用沉积，并经普里兹湾气旋环流（Prydz Bay Cyclonic Gyre）的洋流改造再沉积。块状泥质沉积（沉积相Mm）代表输入至该海湾的沉积物，可构建南极第四纪的高分辨率沉积记录。碳酸盐砂沉积（沉积相Cs）是在大陆架外缘特殊环境下形成的现代冷水碳酸盐沉积。浮游动植物的存在以及沉积学参数的变化，与该海湾内存在大型气旋环流的物理海洋学证据相吻合。本数据集包含的字段如下：观测设备备注、水深（m）、样品、有孔虫、硅藻、单个物种占比、统计个体数、浮游生物。