Articles | Volume 5, issue 1
https://doi.org/10.5194/gchron-5-181-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/gchron-5-181-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
20 Apr 2023
Research article |
| 20 Apr 2023
| 20 Apr 2023
DQPB: software for calculating disequilibrium U–Pb ages
Timothy Pollard
CORRESPONDING AUTHOR
School of Geography, Earth and Atmospheric Sciences, University of Melbourne, Melbourne, Victoria 3010, Australia
EDYTEM UMR CNRS 5204, Université Savoie Mont Blanc, Le Bourget du Lac, CEDEX 73376, France
Jon Woodhead
School of Geography, Earth and Atmospheric Sciences, University of Melbourne, Melbourne, Victoria 3010, Australia
John Hellstrom
School of Geography, Earth and Atmospheric Sciences, University of Melbourne, Melbourne, Victoria 3010, Australia
John Engel
School of Geography, Earth and Atmospheric Sciences, University of Melbourne, Melbourne, Victoria 3010, Australia
Roger Powell
School of Geography, Earth and Atmospheric Sciences, University of Melbourne, Melbourne, Victoria 3010, Australia
Russell Drysdale
School of Geography, Earth and Atmospheric Sciences, University of Melbourne, Melbourne, Victoria 3010, Australia
EDYTEM UMR CNRS 5204, Université Savoie Mont Blanc, Le Bourget du Lac, CEDEX 73376, France
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Cited
16 citations as recorded by crossref.
- Carbonate 206Pb ∕ 238U problems and potential 207Pb ∕ 235U fixes P. Vermeesch et al. https://doi.org/10.5194/gchron-7-459-2025
- Radiometric dating of Middle Pleistocene carbonates: assessing consistency and performance of the U–Th and U–Pb dating methods T. Pollard et al. https://doi.org/10.5194/gchron-7-335-2025
- A matter of time: advances in isotope dilution and laser ablation U–Th and U–Pb dating of speleothems and other terrestrial carbonates R. Weij & T. Edwards https://doi.org/10.1016/j.quascirev.2025.109666
- An astronomically validated U–Pb reference material for dating Quaternary speleothems J. Wang et al. https://doi.org/10.1039/D5JA00244C
- Evolution of a fringing coral reef margin during the Mid-Pleistocene Transition: Results of the Dominican Republic Drilling Project V. Diaz et al. https://doi.org/10.1130/B38582.1
- Protracted hydrothermal alteration of the Burgundy alkalic porphyry prospect determined by in situ U-Pb and Rb-Sr petrochronology, northwestern British Columbia, Canada C. Beno et al. https://doi.org/10.1016/j.oregeorev.2025.106557
- Determining the age and origin of a Tertiary karstic system by in situ U-Pb geochronology on speleothems K. Moreau et al. https://doi.org/10.1130/G52263.1
- Hominin presence in Eurasia by at least 1.95 million years ago S. Curran et al. https://doi.org/10.1038/s41467-025-56154-9
- Improving crystallization and eruption age estimation using U-Th disequilibrium dating of young volcanic zircon Z. Moser et al. https://doi.org/10.5194/gchron-8-63-2026
- Remobilization and eruption of an upper crustal cumulate mush at the Singkut caldera (North Sumatra, Indonesia) F. Forni et al. https://doi.org/10.1016/j.jvolgeores.2023.107971
- Recurrent humid phases in Arabia over the past 8 million years M. Markowska et al. https://doi.org/10.1038/s41586-025-08859-6
- A geological record of highly explosive eruptions from Sumatra (Indonesia) F. Forni et al. https://doi.org/10.1016/j.earscirev.2025.105303
- U-Th and U-Pb geochronology of Quaternary carbonates J. Wang et al. https://doi.org/10.1093/nsr/nwaf078
- On the brink of a cataclysmic eruption: Magma reservoir dynamics and pre-caldera volcanism preceding the Kos Plateau Tuff C. Mikosch et al. https://doi.org/10.1016/j.jvolgeores.2026.108730
- Millennial-scale climate variability of the Asian summer monsoon over the last 690,000 years: insights from cave records X. Niu et al. https://doi.org/10.1016/j.scib.2025.02.011
- PyQtDZMix: A Python tool for zircon U–Pb dating and quantitative material source analysis Z. Guo et al. https://doi.org/10.1007/s12145-026-02205-8
16 citations as recorded by crossref.
- Carbonate 206Pb ∕ 238U problems and potential 207Pb ∕ 235U fixes P. Vermeesch et al. https://doi.org/10.5194/gchron-7-459-2025
- Radiometric dating of Middle Pleistocene carbonates: assessing consistency and performance of the U–Th and U–Pb dating methods T. Pollard et al. https://doi.org/10.5194/gchron-7-335-2025
- A matter of time: advances in isotope dilution and laser ablation U–Th and U–Pb dating of speleothems and other terrestrial carbonates R. Weij & T. Edwards https://doi.org/10.1016/j.quascirev.2025.109666
- An astronomically validated U–Pb reference material for dating Quaternary speleothems J. Wang et al. https://doi.org/10.1039/D5JA00244C
- Evolution of a fringing coral reef margin during the Mid-Pleistocene Transition: Results of the Dominican Republic Drilling Project V. Diaz et al. https://doi.org/10.1130/B38582.1
- Protracted hydrothermal alteration of the Burgundy alkalic porphyry prospect determined by in situ U-Pb and Rb-Sr petrochronology, northwestern British Columbia, Canada C. Beno et al. https://doi.org/10.1016/j.oregeorev.2025.106557
- Determining the age and origin of a Tertiary karstic system by in situ U-Pb geochronology on speleothems K. Moreau et al. https://doi.org/10.1130/G52263.1
- Hominin presence in Eurasia by at least 1.95 million years ago S. Curran et al. https://doi.org/10.1038/s41467-025-56154-9
- Improving crystallization and eruption age estimation using U-Th disequilibrium dating of young volcanic zircon Z. Moser et al. https://doi.org/10.5194/gchron-8-63-2026
- Remobilization and eruption of an upper crustal cumulate mush at the Singkut caldera (North Sumatra, Indonesia) F. Forni et al. https://doi.org/10.1016/j.jvolgeores.2023.107971
- Recurrent humid phases in Arabia over the past 8 million years M. Markowska et al. https://doi.org/10.1038/s41586-025-08859-6
- A geological record of highly explosive eruptions from Sumatra (Indonesia) F. Forni et al. https://doi.org/10.1016/j.earscirev.2025.105303
- U-Th and U-Pb geochronology of Quaternary carbonates J. Wang et al. https://doi.org/10.1093/nsr/nwaf078
- On the brink of a cataclysmic eruption: Magma reservoir dynamics and pre-caldera volcanism preceding the Kos Plateau Tuff C. Mikosch et al. https://doi.org/10.1016/j.jvolgeores.2026.108730
- Millennial-scale climate variability of the Asian summer monsoon over the last 690,000 years: insights from cave records X. Niu et al. https://doi.org/10.1016/j.scib.2025.02.011
- PyQtDZMix: A Python tool for zircon U–Pb dating and quantitative material source analysis Z. Guo et al. https://doi.org/10.1007/s12145-026-02205-8
Saved (final revised paper)
Latest update: 06 Sep 2026
Short summary
When using the uranium–lead (U–Pb) radiometric dating method on very young materials (e.g. Quaternary age zircon and carbonate minerals), it is important to accurately account for the production and decay of intermediate
daughterisotopes in the uranium-series decay chain. DQPB is open-source software that allows users to easily perform such calculations for a variety of sample types and produce publication-ready graphical outputs of the resulting age information.
When using the uranium–lead (U–Pb) radiometric dating method on very young materials (e.g....
