Planktic foraminiferal faunal turnovers in the subtropical Pacific during the late Paleocene to early Eocene

TitlePlanktic foraminiferal faunal turnovers in the subtropical Pacific during the late Paleocene to early Eocene
Publication TypeJournal Article
Year of Publication1995
AuthorsLu, G, Keller, G
JournalThe Journal of Foraminiferal Research
Volume25
Pagination97–116
Date Publishedapr
Abstract

Planktic foraminiferal analysis of sedimentary samples at 25-cm intervals (81 k.y.) at DSDP Site 577 provides a high resolution data base for deep-sea biostratigraphy and faunal changes during the late Paleocene to early Eocene. There are three major faunal turnovers, each of which occurred over a time period of 200 to 400 k.y., near the P3a/P3b, P6a/P6b and PSIP9 boundaries. These turnovers are characterized by rapid changes in species richness, large numbers of first and last appearances, and significant changes in the relative abundances of species. A chronological sequence of datum levels and faunal events of foraminifera tied to magnetostratigraphy provides biostratigraphic control at 1 m.y. intervals for the late Paleocene to early Eocene, with faunal and isotopic events near the PaleoceneiEocene boundary providing isochronous stratigraphic markers.   PDF

URLhttps://doi.org/10.2113/gsjfr.25.2.97
DOI10.2113/gsjfr.25.2.97