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={Darren M. Gravley and Colin J. N. Wilson and Michael D. Rosenberg and G. Leonard},
  journal={New Zealand Journal of Geology and Geophysics},
  year={2006},
  volume={49},
  pages={305 - 308}
}
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… 
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References

SHOWING 1-10 OF 24 REFERENCES
The Ohakuri pyroclastic deposits and the evolution of the Rotorua-Ohakuri volcanotectonic depression.
The caldera-forming Ohakuri pyroclastic deposits (~ 100 km3 magma) were erupted at ~ 240 ka from the newly defined Ohakuri caldera, which is located within the central Taupo Volcanic Zone (TVZ) of
BASEMENT GEOLOGY AND STRUCTURE OF TVZ GEOTHERMAL FIELDS, NEW ZEALAND
The basement beneath the volcanic and sedimentary deposits in geothermal fields in the Taupo Volcanic Zone is a potential, but poorly understood resource for future deep production. A basement
Double trouble: Paired ignimbrite eruptions and collateral subsidence in the Taupo Volcanic Zone, New Zealand
Large explosive eruptions are generally rare, random events in the history of any particular volcano, volcanic area, or worldwide. In the Taupo Volcanic Zone, New Zealand, temporal clustering of
Stratigraphy and structural outline of the Taupo Volcanic Zone
Abstract The Taupo Volcanic Zone is a complex basin of volcano-tectonic subsidence in the central North Island. Here eruptive activity has persisted from approximately midPliocene to the present
Chronology and dynamics of a large silicic magmatic system: Central Taupo Volcanic Zone, New Zealand
The central Taupo Volcanic Zone in New Zealand is a region of intense Quaternary silicic volcanism accompanying rapid extension of continental crust. At least 34 caldera-forming ignimbrite eruptions
The evolution of Maroa Volcanic Centre, Taupo Volcanic Zone, New Zealand
Subsurface stratigraphy and structure of the Orakeikorako and Te Kopia geothermal systems
  • 1991
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3
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