Sahy, D., Condon, D., Hilgen, F., Kuiper, K. 2017. U-Pb Zircon Geochronology from Volcanic Ash Beds in the Umbria-Marche Sedimentary Succession of Central Italy, Version 1.0. Interdisciplinary Earth Data Alliance (IEDA). https://doi.org/10.1594/IEDA/100732.
U-Pb Zircon Geochronology from Volcanic Ash Beds in the Umbria-Marche Sedimentary Succession of Central Italy
This dataset contains CA-ID-TIMS U-Pb zircon data from 11 volcanic ash beds from the Umbria-Marche sedimentary succession in central Italy. This includes data from volcanic ash beds previously dated using the 40Ar/39Ar method (biotite, multigrain fractions) from Massignano (Rupelian GSSP) and Monte Cagnero (proposed Chattian GSSP). The data demonstrate that previous radio-isotopic dating of the Massignano and Monte Cagnero records gave anomalously old results, and thereby eliminates the ca. 0.6 Myr discrepancy observed between radio-isotopic and astronomically tuned time scales of the Oligocene in the 2012 edition of the Geological Time Scale.
Coverage Scope: Regional (Continents, Oceans)
Geographic Location: Italy, Apennines
Sahy, D., Condon, D.J., Hilgen, F.J., Kuiper, K.F., (2017), "Reducing Disparity in Radio-Isotopic and Astrochronology-Based Time Scales of the Late Eocene and Oligocene." Paleoceanography, 32(10):1018-1035
User Contributed Keyword(s):
Eocene, Oligocene, Time Scale Calibration, EARTHTIME-EU
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