Precision and accuracy of nannofossil biostratigraphic correlation

Calcareous nannofossils are widely recognized to be a powerful tool for regional and worldwide biostratigraphic correlations. Recently, nannofossil biostratigraphy has been advanced by expanding the nannofossil database using a quantitative analytical approach, and by testing the reliability of bioe...

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Bibliographic Details
Published inPhilosophical transactions of the Royal Society of London. Series A: Mathematical, physical, and engineering sciences Vol. 357; no. 1757; pp. 1975 - 1993
Main Author Raffi, Isabella
Format Journal Article
LanguageEnglish
Published The Royal Society 15.07.1999
Subjects
Astronomy
Biostratigraphy
Calcareous Nannofossils
Calibration
Correlations
Drilling
Geology
Global stratotype section and point
Late Cenozoic
Oceans
Oligocene-Miocene Transition
Reliability
Sediments
Stratigraphic Correlation
Stratigraphy
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Summary:Calcareous nannofossils are widely recognized to be a powerful tool for regional and worldwide biostratigraphic correlations. Recently, nannofossil biostratigraphy has been advanced by expanding the nannofossil database using a quantitative analytical approach, and by testing the reliability of bioevents in different time-intervals. Efforts to improve nannofossil biostratigraphy have resulted in a set of reliable 'biohorizons' (biostratigraphic datums), which are correlatable across wide distances. Where dating tools such as cyclostratigraphy and magnetostratigraphy are available, calcareous nannofossil biohorizons can be used as control points for the identification of cycle numbers and polarity zones. For the Cenozoic, nannofossil biochronology can provide a basis for age models, which can then be developed into orbitally tuned cyclostratigraphies, or used for chronological revision of polarity time-scales.
Bibliography:istex:71D887A00EEB741E98D403C63F0C2DAFD80A2AA9
ark:/67375/V84-VK42T7WR-G
Discussion Meeting Issue 'Astronomical (Milankovitch) calibration of the geological time-scale' organized by N. J. Shackleton, I. N. McCave and G. P. Weedon
ISSN:1364-503X
1471-2962
DOI:10.1098/rsta.1999.0410