Neogene diatoms from the western Antarctic Peninsula@en

During Ocean Drilling Program Leg 178 we cored nine sites on the continental rise (Sites 1095, 1096, and 1101), continental shelf (Sites 1097, 1100, 1102, and 1103), and in an inner shelf basin, Palmer Deep (Sites 1098 and 1099), along the Pacific margin of the Antarctic Peninsula. Fossil diatoms are a key group that provides age constraint for these shelf site sediments to allow reconstruction of Antarctic Peninsula glacial history. This paper provides the systematic paleontology of diatoms applied in biostratigraphic and paleoceanographic studies and includes a total of 33 plates. Taxonomic confusion in previous reports, including biostratigraphically useful species such as Thalassiosira inura and Thalassiosira complicata, is discussed. These systematics and taxonomic discussions help to provide a reference for Neogene diatoms in the Southern Ocean.本研究在大洋钻探计划第178航次期间，于南极半岛太平洋陆缘的9个钻探站位获取岩芯，站位分布涵盖大陆隆（1095、1096、1101站位）、大陆架（1097、1100、1102、1103站位）以及陆架内海盆帕默海槽（Palmer Deep，1098、1099站位）。化石硅藻是为上述陆架站位沉积物提供年代约束的关键类群，可用于重建南极半岛的冰川演化历史。本文系统阐述了应用于生物地层学与古海洋学研究的硅藻系统古生物学内容，全文共计33幅图版。本研究还讨论了既往报道中存在的分类学混淆问题，其中涵盖具有生物地层学应用价值的扭曲海链藻（Thalassiosira inura）与复杂海链藻（Thalassiosira complicata）等物种。上述系统学与分类学讨论可为南大洋新近纪硅藻的相关研究提供参考依据。