Neogene diatom biostratigraphy of ODP Leg 113, supplement to: Gersonde, Rainer; Burckle, Lloyd H (1990): Neogene diatom biostratigraphy of ODP Leg 113, Weddell Sea (Antarctic Ocean). In: Barker, PF; Kennett, JP; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 113, 761-790

Diatom assemblages recovered during ODP Leg 113 at eight sites in the Weddell Sea (Atlantic sector of the circum-Antarctic Ocean) provide new insights into southern high-latitude Neogene diatom biostratigraphy. The excellent sections recovered by ODP Leg 113 Sites 689 and 690 (Maud Rise, southeast W...

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Bibliographic Details
Main Authors: Gersonde, Rainer, Burckle, Lloyd H
Format: Article in Journal/Newspaper
Language:English
Published: PANGAEA - Data Publisher for Earth & Environmental Science 1990
Subjects:
Online Access:https://dx.doi.org/10.1594/pangaea.726496
https://doi.pangaea.de/10.1594/PANGAEA.726496
Description
Summary:Diatom assemblages recovered during ODP Leg 113 at eight sites in the Weddell Sea (Atlantic sector of the circum-Antarctic Ocean) provide new insights into southern high-latitude Neogene diatom biostratigraphy. The excellent sections recovered by ODP Leg 113 Sites 689 and 690 (Maud Rise, southeast Weddell Sea, Antarctic Ocean) were chosen for the establishment of a revised Neogene Antarctic diatom zonation. Altogether, 16 diatom zones are described as well as several stratigraphically useful diatom datums of late early Miocene to Pleistocene age. Six zones established by previous authors are partly modified or renamed, and 10 new zones are proposed. The zones are calibrated directly to the geomagnetic time scale, which provides a chronological framework for the zones and permits comparisons of Neogene Antarctic diatom events with events described from the low and northern high latitudes. This is the first attempt at direct calibration of Miocene Antarctic diatom zones with the geomagnetic time scale.