Diatom stratigraphy of ODP Leg 150 holes

Diatoms are present in middle to lower upper Miocene sections of all holes examined during Leg 150, but are generally absent or in low abundance in Pleistocene to middle upper...硅藻（Diatoms）广泛产出于第150航次（Leg 150）所钻探的全部井位的晚中新世中下部地层剖面中，但在更新世至中上部（原文未完整接续）地层内，硅藻通常缺失或丰度偏低。