The nature and age of Ohakuri Formation and Ohakuri Group rocks in surface exposures and geothermal drillhole sequences in the central Taupo Volcanic Zone, New Zealand

@article{Gravley2006TheNA,
  title={The nature and age of Ohakuri Formation and Ohakuri Group rocks in surface exposures and geothermal drillhole sequences in the central Taupo Volcanic Zone, New Zealand},
  author={D. Gravley and C. Wilson and M. D. Rosenberg and Graham Leonard},
  journal={New Zealand Journal of Geology and Geophysics},
  year={2006},
  volume={49},
  pages={305 - 308}
}
  • D. Gravley, C. Wilson, +1 author Graham Leonard
  • Published 2006
  • Geology
  • New Zealand Journal of Geology and Geophysics
  • Abstract The name “Ohakuri” has been applied both as formation and group names to surface deposits and deeply buried deposits recorded in geothermal drillholes in the central Taupo Volcanic Zone (TVZ) of New Zealand. The surface deposits are dated at 240 ± 10 ka (1 SD) and cap sequences that postdate the 320–340 ka Whakamaru group ignimbrites, whereas the buried deposits demonstrably predate the Whakamaru group ignimbrites. The Ohakuri Formation is here redefined to refer only to the surface… CONTINUE READING
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