High-precision U-Pb zircon age calibration of the global Carboniferous time scale and Milankovitch band cyclicity in the Donets Basin, eastern Ukraine

High-precision U-Pb zircon age calibration of the global Carboniferous time scale and Milankovitch band cyclicity in the Donets Basin, eastern Ukraine

High‐precision ID‐TIMS U‐Pb zircon ages for 12 interstratified tuffs and tonsteins are used to radiometrically calibrate the detailed lithostratigraphic, cyclostratigraphic, and biostratigraphic framework of the Carboniferous Donets Basin of eastern Europe. Chemical abrasion of zircons, use of the i...

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Veröffentlicht in:Geochemistry, geophysics, geosystems : G3 geophysics, geosystems : G3, 2010-02, Vol.11 (2), p.np-n/a
Hauptverfasser: Davydov, Vladimir I., Crowley, James L., Schmitz, Mark D., Poletaev, Vladislav I.
Format: Artikel
Sprache:eng
Schlagworte:
Abrasion
Abrasion resistance
Age
Basins
biostratigraphy
Calibration
Carboniferous
Climate change
Conodonta
cyclostratigraphy
Eccentricity
Geological time
Ice ages
Mass spectrometry
Oceanography
Paleozoic
Strata
time scale
U-Pb geochronology
Zircon
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Zusammenfassung:High‐precision ID‐TIMS U‐Pb zircon ages for 12 interstratified tuffs and tonsteins are used to radiometrically calibrate the detailed lithostratigraphic, cyclostratigraphic, and biostratigraphic framework of the Carboniferous Donets Basin of eastern Europe. Chemical abrasion of zircons, use of the internationally calibrated EARTHTIME mixed U‐Pb isotope dilution tracer, and improved mass spectrometry guided by detailed error analysis have resulted in an age resolution of
ISSN:1525-2027
1525-2027
DOI:10.1029/2009GC002736