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A review of calcareous nannofossil astrobiochronology encompassing the past 25 million years

Record type: Article

This paper presents a review of (astrobiochronological) calibration of Recent to late Oligocene calcareous nannofossil datum events. Biohorizons included in the paper are those of the widely used “standard” nannofossil zonations of Martini, E. [1971. Standard Tertiary and Quaternary calcareous nannoplankton zonation. In: Farinacci, A. (Ed.), Proceedings of the Second International Conference on Planktonic Microfossils Roma. Rome, Ed. Tecnosci. vol. 2, pp. 739–785], and Okada, H., and Bukry, D. [1980. Supplementary Modification and Introduction of Code Numbers to the Low-Latitude Coccolith Biostratigraphy Zonation (Bukry, 1973, 1975). Marine Micropaleontology 51, 321–325], as well as supplementary biohorizons proposed in the literature. The biohorizons have been selected on the basis of the unambiguous taxonomy of the index taxa and their biostratigraphic usefulness. We emphasise the application of rigorous methodology in nannofossil studies which permits an evaluation of biohorizons in terms of reliability, and calibrates their potential correlatability. Astrochronological age estimates rely on the Geologic timescale developed by the ICS in 2004, with some new calibrations included. We provide an overview of the relative position of biohorizons versus the astronomically calibrated ages of magnetic reversals and reference isotope stratigraphies. Surprisingly, there are still few high-resolution quantitative biostratigraphic studies of astrochronologically tuned sections in spite of the central role of such studies in addressing fundamental problems such as the tempo and mode of plankton evolution.

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Citation

Raffi, I., Backman, J., Fornaciari, E., Pälike, H., Rio, D., Lourens, L. and Hilgen, F. (2006) A review of calcareous nannofossil astrobiochronology encompassing the past 25 million years Quaternary Science Reviews, 25, (23-24), pp. 3113-3137. (doi:10.1016/j.quascirev.2006.07.007).

More information

Submitted date: 18 November 2005
Published date: December 2006

Identifiers

Local EPrints ID: 41543
URI: http://eprints.soton.ac.uk/id/eprint/41543
ISSN: 0277-3791
PURE UUID: a543f42e-dc5e-493c-bd17-8a17f82e132b

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Date deposited: 25 Sep 2006
Last modified: 17 Jul 2017 15:29

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Contributors

Author: I. Raffi
Author: J. Backman
Author: E. Fornaciari
Author: H. Pälike
Author: D. Rio
Author: L. Lourens
Author: F. Hilgen

University divisions


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