Oligocene diatom biostratigraphy for the Labrador Sea

The Oligocene diatom assemblage observed in samples from Hole 647A consists of a mixture of species characteristic of the low latitudes, the high southern latitudes, and the...从647A钻孔（Hole 647A）的样品中观测到的渐新世（Oligocene）硅藻组合，由低纬度特征物种、南纬高纬度特征物种以及……混合构成。