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Geology and petrology of Ruapehu volcano and associated vents.
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Petrochemical and Sr isotope studies of lavas and xenoliths from Tongariro Volcanic Centre - implications for crustal contamination in calc-alkaline magmas.
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The stratigraphy, petrography and glass chemistry of some mid-late Pleistocene tephras, eastern Wairarapa.
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Geology, petrography and geochemistry of Mt Titiraupenga, northwest Taupo, 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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The characterisation and correlation of the late Cenozoic tuffs in southeastern North Island, 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.
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A study of some aspects of the volcanic history of the Lake Taupo area, North Island, New Zealand.
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Revision of the distribution of Papanetu Tephra, and establishment of its stratigraphic relationship to Karapiti Tephra, central North Island.