Calcareous nannofossil abundance estimates and datums of ODP Leg 189 sites

A major objective of Leg 189 was to date the opening of the Australia-Antarctic Gateway to shallow-water circulation and subsequently to deepwater circulation in the Paleogene. Calcareous nannofossils are the most consistently present, although not necessarily the most abundant fossil group in Paleo...

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Bibliographic Details
Main Authors: Wei, Wuchang, McGonigal, Kristeen L, Zhong, Shilan
Format: Other/Unknown Material
Language:English
Published: PANGAEA 2003
Subjects:
189-1168A
189-1170A
189-1170D
189-1171C
189-1171D
189-1172A
189-1172D
DRILL
Drilling/drill rig
Indian Ocean
Joides Resolution
Leg189
Ocean Drilling Program
ODP
South Pacific Ocean
Tasman Sea
Antarc*
Antarctic
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.780194
https://doi.org/10.1594/PANGAEA.780194
Description
Summary:A major objective of Leg 189 was to date the opening of the Australia-Antarctic Gateway to shallow-water circulation and subsequently to deepwater circulation in the Paleogene. Calcareous nannofossils are the most consistently present, although not necessarily the most abundant fossil group in Paleogene sections, and the shipboard study (Exon, Kennett, Malone, et al., 2001, doi:10.2973/odp.proc.ir.189.2001) showed that they generally provided the most useful age information. This report presents documentation of the stratigraphic distribution of nannofossils in the Paleogene and summarizes useful nannofossil datums, which should facilitate construction of age-depth curves and contribute to an integrated chronology for Leg 189 sediments. Previous Paleogene nannofossil study in this area is that of Edwards and Perch-Nielsen (1975, doi:10.2973/dsdp.proc.29.113.1975).

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