 | | Journal (article/letter/editorial) | | geochemical features of the Okete Volcanics, western North Island, New Zealand Roger M. Briggs 1 and Gordon...Sciences Department, University of Waikato, Hamilton, New Zealand 2 Center for Volcanology, University...Eugene, Oregon, 97403, USA Abstract. The Okete Volcanics form small volume mono- genetic volcanoes situated...Alexandra Volcanics, in the back-arc tectonic environment of western North Island, New Zealand. The lavas...lavas and tufts of the Oketc Volcanics have compositions which include basanites, alkali olivine basalts |  | | Journal (article/letter/editorial) | | Margin and Intraplate Magmatism, North Island, New Zealand by R. M. BRIGGS 1 AND W. F. McDONOUGH 2 3 1...Department of Earth Sciences, University of Waikato, Hamilton, New Zealand Research School of Earth Sciences,...the Wadati-Benioffzone on the North Island, New Zealand. These two contrasting magma types, together...period (1-60-2-74 Ma) and constitute the Alexandra Volcanics. Field relationships indicate that these diverse...alkalic and convergent margin region. INTRODUCTION The Alexandra Volcanics consist of two contrasting magma |  | | Journal (article/letter/editorial) | | -1 ORIGINAL PAPER Intraplate volcanism in New Zealand: the role of fossil plume material and variable...2007 Abstract The geologic evolution of the New Zealand microcontinent was characterised by intermittent...evaluate the corresponding mantle evolution beneath New Zealand with a specific focus on the tectonic evolution...University of Wellington, Kelburn Campus, Wellington, New Zealand 0.7037, eHf: + 4.4, eNd: + 3.9). Whereas volcanism...is suggested by overall similarities between New Zealand intraplate volcanic rocks and volcanic rocks |  | | | | NORTH ISLAND NEW ZEALAND Poor Kn1ght1 Is • . ,, r ,n H~n & C h1ck...Rivt~r I'. MY OF East C,pe Pf.NEW PLYMO • Cil.pe Eimo C • Portl.lfld I MY Secretar)'...ISLAND f Pq,1 Pt., 1~s II t I SOUTH ISLAND NEW ZEALAND +I s University College Cardiff Library...' _____ TELE - . _, • The Geology of New Zealand Volume 2 •• J-----~---.. ~ ::,,::::j::~....Associate Editors: G. R. Stevens, M. T. Te Punga New Zealand Geological Survey, Department of Scientific and |  | | Book (volume) | | NORTH ISLAND NEW ZEALAND Poor Kn1ght1 Is • . ,, r ,n H~n & C h1ck...Rivt~r I'. MY OF East C,pe Pf.NEW PLYMO • Cil.pe Eimo C • Portl.lfld I MY Secretar)'...ISLAND f Pq,1 Pt., 1~s II t I SOUTH ISLAND NEW ZEALAND +I s University College Cardiff Library...' _____ TELE - . _, • The Geology of New Zealand Volume 2 •• J-----~---.. ~ ::,,::::j::~....Associate Editors: G. R. Stevens, M. T. Te Punga New Zealand Geological Survey, Department of Scientific and |
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