Lowe, D.J. & Hogg, A.G. (1995). Age of the Rotoehu Ash. Comment. New Zealand Journal of Geology and Geophysics, 38(3), 399-402.
Permanent Research Commons link: http://hdl.handle.net/10289/214
Suggests that the article by Whitehead & Ditchburn (1994), although presenting useful new data on 230Th/232Th analyses, is flawed and misleading in suggesting that the Rotoiti Tephra is considerably younger than c. 50 ka.
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This article has been published in the journal: New Zealand Journal of Geology and Geophysics. © 1995 The Royal Society of New Zealand. Used with permission.