Journal article

Data reporting norms for Ar-40/Ar-39 geochronology

Paul R Renne, Alan L Deino, Willis E Hames, Matthew T Heizler, Sidney R Hemming, Kip V Hodges, Anthony AP Koppers, Darren F Mark, Leah E Morgan, David Phillips, Brad S Singer, Brent D Turrin, Igor M Villa, Mike Villeneuve, Jan R Wijbrans



Data reported in 40Ar/39Ar geochronology studies are commonly insufficient to allow computation of ages. This deficiency renders it difficult to compare ages based on different standards or constants, and often hinders critical evaluation of the results. Herein are presented an enumeration of the data that should be reported in all 40Ar/39Ar studies, including a discussion in support of these requirements. The minimum required data are identified and distinguished from parameters that are useful but may be derived from them by calculation. Finally, recommendations are made for metadata needed to document age calculations (e.g., from age spectrum or isochron analyses). © 2009 Elsevier Ltd. Al..

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University of Melbourne Researchers


Awarded by U.S. National Science Foundation

Awarded by Natural Environment Research Council

Funding Acknowledgements

We thank K.R. Ludwig for suggestions and advice, with apologies for not heeding all his recommendations, and I. McDougall for constructive review of the manuscript. We thank S.C. Chang, M.A. Cosca, B.D. Idleman, C.E. Isachsen, B.R.Jicha, K.F. Kuiper, M.J. Kunk, and M.L. Machlus for discussion at the Earthtime IV meeting, and S.J. Brownlee, W.S. Cassata, K. Fletcher, N.A. Jarboe and J.I. Simon for additional discussion with the senior author. We are grateful to the U.S. National Science Foundation (grant EAR 0451802) for funding the Earthtime meetings at which the topic of this communication was discussed.