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Studies of the Earthquake Flat Breccia Formation and other unwelded pyroclastic flow deposits of the Central Volcanic Region, New Zealand.
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Contributions to the geology of Mt Ruapehu, New Zealand.
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Physical volcanology of Pukeonake Scoria Cone, Tongariro Volcanic Centre, central North Island, New Zealand.
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Late Quaternary geology of Whangaparaoa area, East Cape, New Zealand.
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Some studies of the geology, volcanic history, and geothermal resources of the Okataina Volcanic Centre, Taupo Volcanic Zone, New Zealand.