Planktonic foraminifera from DSDP Leg 90 holes and DSDP Site 89-586

Planktonic foraminifers from DSDP Site 586 on Leg 89 and Sites 587-594 on Leg 90, cored by the Glomar Challenger from the equator to subantarctic waters of the southwest Pacific, are recorded. Five zonal schemes were used because of latitudinal changes in faunal assemblages and these are discussed; inter site correlation was established by selected datum species. Major epoch boundaries were normally marked by the following species: Pliocene/Pleistocene, the appearance of Globorotalia truncatulinoides; Miocene/Pliocene, appearance of G. tumida in the north and the extinction of G. conomiozea in the south; Oligocene/Miocene, the appearance of Globoquadrina dehiscens at 586, 588, and 593; Eocene/Oligocene, at the extinction of Globigerinatheka index. […]

本数据集收录了在DSDP Site 586（89航次）及 Sites 587-594（90航次）采集的浮游有孔虫样本，这些样本由“格洛玛挑战者”号在赤道至西南太平洋亚南极水域进行钻探获取。鉴于动物群落的纬度变化，采用了五种不同的区域划分方案，并对之进行了详细讨论；通过选定参照物种建立了站点间的相关性。主要地质年代界线通常以以下物种为标志：上新统/更新统，Globorotalia truncatulinoides的出现；中新统/上新统，G. tumida在北方的出现与G. conomiozea在南方灭绝；渐新统/中新统，Globoquadrina dehiscens在586、588和593号站点的出现；古新统/渐新统，Globigerinatheka index的灭绝。 [...]