Application of combined U-Th-disequilibrium/U-Pb and (U-Th)/He zircon dating to tephrochronology
The combination of U-Th disequilibrium/U-Pb and (U-Th)/He dating of zircon (ZDD) has provided a relatively new radiometric approach suitable for dating Quaternary zircon-bearing volcanic and pyroclastic deposits. This approach permits the dating of zircon as young as ca. 2.5 ka and has huge potentia...
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| Main Authors: | , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
2017
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| In: |
Quaternary geochronology
Year: 2016, Volume: 40, Pages: 23-32 |
| ISSN: | 1871-1014 |
| DOI: | 10.1016/j.quageo.2016.07.005 |
| Online Access: | Verlag, Volltext: http://dx.doi.org/10.1016/j.quageo.2016.07.005 Verlag, Volltext: http://linkinghub.elsevier.com/retrieve/pii/S1871101416301157 
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| Author Notes: | Martin Danišík, Axel K. Schmitt, Daniel F. Stockli, Oscar M. Lovera, István Dunkl, Noreen J. Evans |
| Summary: | The combination of U-Th disequilibrium/U-Pb and (U-Th)/He dating of zircon (ZDD) has provided a relatively new radiometric approach suitable for dating Quaternary zircon-bearing volcanic and pyroclastic deposits. This approach permits the dating of zircon as young as ca. 2.5 ka and has huge potential for tephrochronology and other fields of Quaternary science. Its applicability range covers the critical time-window in Quaternary geochronology beyond the range of 14C and below the limit of routine Ar/Ar dating (i.e. between ca. 50 ka and 1.5 Ma). The combined U-Th disequilibrium/U-Pb and (U-Th)/He dating approach can also be applied to other actinide-rich minerals such as allanite or monazite. In <1 Ma young volcanic samples, the integration of the low-temperature (U-Th)/He geochronometer with the hightemperature U-Th disequilibrium/U-Pb geochronometers is essential in order to correct for disequilibrium in the U-decay chains which, when ignored, may result in erroneous underestimation of true eruption ages. |
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| Item Description: | Gesehen am 06.08.2018 Available online 7 September 2016 |
| Physical Description: | Online Resource |
| ISSN: | 1871-1014 |
| DOI: | 10.1016/j.quageo.2016.07.005 |