 | | Journal (article/letter/editorial) | | Petrology of Dunedin Volcano R.C. Price Department of Geology, University of Otago, Dunedin, New Zealand* B.W...that the range in rock types making up the Dunedin volcano has developed by crystal fractionation processes...variants on these series. The phonolitic rocks of the volcano are low pressure differentiates derived by fractional...outlined above. Quartz normative trachytes of the volcano appear to be differentiates from a distinct saturated...Introduction Age and History of the Volcanism The Dunedin Volcanics form a prominent massif about 30 km in |  | | Journal (article/letter/editorial) | | 1973 The Geochemistry of the Dunedin Volcano, East Otago, New Zealand: Rare Earth Elements 1~. C. Price...Price Geology Department, University of Otago, Dunedin, New Zealand S. 1%. T a y l o r Geophysics and Geochemistry...Abstract. A variety of alkaline lavas from the Dunedin Volcano have been analyzed for the rare earth elements...coupled with a sharp depletion in Eu. Removal of plagioclase from benmoreite magma is suggested for the derivation...d i n Volcano of E a s t Otago, New Zealand, is a d e e p l y dissected, comp o s i t e volcano of U p |  | Hoernle, K., White, J.D.L., van den Bogaard, P., Hauff, F., Coombs, D.S., Werner, R., Timm, C., Garbe-Schönberg, D., Reay, A., Cooper, A.F. (2006) Cenozoic intraplate volcanism on New Zealand: Upwelling induced by lithospheric removal. Earth and Planetary Science Letters, 248 (1) 350-367 doi:10.1016/j.epsl.2006.06.001 | Journal (article/letter/editorial) | | com/locate/epsl Cenozoic intraplate volcanism on New Zealand: Upwelling induced by lithospheric removal K...Geology Department, University of Otago, PO Box 56, Dunedin 9015, New Zealand c Tethys Geoconsulting GmbH,...Auckland, Campbell and Antipodes Islands of New Zealand has produced quartz tholeiitic to basanitic/nephelinitic...differentiates) monogenetic volcanic fields and large shield volcanoes. New 40Ar/39Ar ages, combined with...restricted areas over long time periods, and a lack of volcanic age progressions in the direction and at the rate |  | | Journal (article/letter/editorial) | | the Banks Peninsula Volcanoes, South Island, New Zealand R.C. Price I and S.R. Taylor 2 1 Department of...the volcanic sequence of the twin volcanoes of Lyttelton and Akaroa, Banks Peninsula, New Zealand a number...Formation, but unconformably overlain by the main volcanic dome sequence, is a unit of rhyolite (Gebbies...into the crust. Between 12 and 9.7 m.y. a large volcanic dome, composed mainly of hawaiite, was built at...Lyttelton. Dykes, which intrude the Lyttelton volcanic sequence, range in composition from basalt to |  | | Journal (article/letter/editorial) | | phonolitic lavas from Nigeria, Australia, East Germany and New Zealand ANTHONYJ. IRVING* tunar and Planetary...Phonolite Hill (northeastern Australia) and Heldbmg (East Germany) is consistent with an origin by fractional...benmoreite from Pigroot (New Zealand) to basanitic lavas of the East Otago province is not supported by major...possibly the product of melting of a mantle source region previously enriched in Sr and light rare earth...MACDONALD THERE IS considerable evidence that volcanic rocks and KATSURA,1964, p. 99; NICHOLLS and LORENZ |  | Scott, J. M., Hodgkinson, A., Palin, J. M., Waight, T. E., Van der Meer, Q. H. A., Cooper, A. F. (2014) Ancient melt depletion overprinted by young carbonatitic metasomatism in the New Zealand lithospheric mantle. Contributions to Mineralogy and Petrology, 167 (1) doi:10.1007/s00410-014-0963-0 | Journal (article/letter/editorial) | | overprinted by young carbonatitic metasomatism in the New Zealand lithospheric mantle J. M. Scott • A. Hodgkinson...from a cluster of Miocene volcanoes in southern New Zealand preserve evidence of the complex evolution of...Department of Geology, University of Otago, Leith St, Dunedin 9054, New Zealand e-mail: james.scott@otago.ac...clustered Miocene volcanoes in the South Island of New Zealand (Fig. 1). We assess the nature of the metasomatism...have been built. The intraplate Dunedin Volcanic Group in East Otago is composed of two members: the |  | | Journal (article/letter/editorial) | | Alkalic Lavas of the McMurdo Volcanic Group, Antarctica,andDunedinVolcano'New Zealand Pmlrp R. Kvlr, Departmentof...N ew Zealand tNo Rlculnn C. PnIcn' Departmentof Geology,Uniuersityof Otago, Dunedin.New Zealand Abstract...Occurrences Point Peninsula,Antarctica) and Dunedin Volcano (New Zealand).Electron microprobe analysesincreasethe...Antarcticexamples having higher TiOr, and the Dunedin examplehigherNarO than other terrestrialrhiinites'...McMurdo in the occurrence reported first is the Volcanic Grouf and also in Antarctica. In the southern |  | | Report (issue) | | NEW ZEALAND DEPARTMENT OF SCIENTIFIC AND INDUSTRIAL RESEARCH NEW ZEALAND GEOLOGICAL SURVEY 125th ANNIVERSARY...1865 -1990 NEW ZEALAND GEOLOGICAL SURVEY BULLETIN 104 ISSN 0077-9628 Minerals of New Zealand by G. L....initials should be G.T., not G.L. Lower Hutt, New Zealand 1990 I I Beach sand, alluvium, • terrace...rocka, particularly greywacke Young (Cenozoic) volcanic rocks, including 4. modern volcanoes 5. s 9...9 Iii ■ t Old (Mesozoic and Paleozoic) volcanic rocks Schist Gneiss and granulite 20 6 Figure |  | | Journal (article/letter/editorial) | | in Undersaturated Volcanic Rocks from the East Otago Volcanic Province (New Zealand) and Related Rocks...petrology of the East Otago Volcanic Province (late Miocene), including the Dunedin Complex, is dominated...range of relatively potassic volcanic rocks is also developed in the Province. The degree of undersaturation...intrusives in the Province, assessed in conjunction with similar data from other volcanic provinces, demonstrate...production of phonolite from trachyte in the East Otago Province has not been demonstrated. The mafic variants |  | | Journal (article/letter/editorial) | | Department of Geology, University of Otago, Dunedin (New Zealand) Received November 3, 1975 Revised version...Fiordland and southern Stewart Island in southern New Zealand and from Ford Range and other localities in West... extending 9 ° south and 10 ° east of the South Island of New Zealand [ 1 ], consists of continental-type...area of the Snares Islands, 120 km south o f New Zealand [8,10,11 ], and also crops out under Tertiary...discussed in the light of relevant data from New Zealand, Marie Byrd Land, and West Antarctica. 2. Snares |  | | Journal (article/letter/editorial) | | Western Otago, New Zealand by A. F. COOPER Department of Geology, University of Otago, Dunedin, New Zealand...part of a lamprophyre dyke swarm from West Otago, New Zealand comprises monchiquites and camptonites. Dykes...Terrane in South Westland and western Otago, South Island, New Zealand (Fig. 1). The swarm extends from the...FIG. 1. Locality map of the Alpine dyke swarm. New Zealand. Locations of dykes discussed in this repon are...May 12, 2015 A OCELLAR LAMPROPHYRES FROM NEW ZEALAND 141 FIG. 2. OU 27518.* Holocrystalline lamprophyre |  | | Journal (article/letter/editorial) | | com/locate/gca Petrogenesis of Cenozoic, alkalic volcanic lineages at Mount Morning, West Antarctica and...Department of Geology, University of Otago, P.O. Box 56, Dunedin, New Zealand b Science and Engineering, University...University of Waikato, Hamilton, New Zealand Received 21 July 2012; accepted in revised form 20 August...available online 30 August 2013 Abstract Two volcanic lineages are identified at Mount Morning, a Cenozoic...West Antarctica, which is part of the McMurdo Volcanic Group. Both the older (at least 18.7–11.4 Ma) |  | | Journal (article/letter/editorial) | | NarFel+Fel+SiuO20, a new member of the aenigmatitegroup from the Warrumbungle Yolcano, New South Wales, Australia...cr Wilkinsonite, ideally NarFel+Fel+Si.Oro,is a new member of the aenigmatitegroup. Its principal known...rsaturatedtrachyte from the Wamrmbungle Volcano, central New South Wales, Australia. A complete solid-solution...a relatively common constituent of peralkaline volcanic and plutonic rocks and, through the advent of...silica-undersaturatedtrachytesfrom the Warrumbungle Volcano, central New South Wales,Australia. In particular, a |  | | Journal (article/letter/editorial) | | mixing in the Puy Griou/Griounot area of the Cantal volcano (10 3 Ma). Petrographic evidence for injection...that, unlike most other fractionated magmas of the region, phonolites which show evidence for magma mixing...responsible for some of the variability observed in volcanic and plutonic rocks. Application of fluid dynamic...has been considered to be the trigger for major volcanic eruptions. Field, petrological and geochemical...curved. Geological setting The alkaline volcanic province of the French Massif Central is dominated |  | | Journal (article/letter/editorial) | | WESTLAND, NEW ZEALAND Alan F. COOPER§ and Lorraine A. PATERSON Geology Department, University of Otago, P.O...O. Box 56, Dunedin, New Zealand Abstract A late Oligocene – early Miocene alkali lamprophyre dyke swarm...swarm was emplaced in western South Island, New Zealand, during transtensional development of the Alpine...component, liquid immiscibility, South Island, New Zealand. Sommaire Un essaim de filons de lamprophyres...Introduction In the Southern Alps of northwestern Otago and south Westland, the Haast Schist basement is |  | | Journal (article/letter/editorial) | | Tsugawa and Tadami areas, although many of acid volcanic rocks in the areas consist of phenocrysts of biotite...hornblende. These perlites consist of phenocrysts of plagioclase (andesineoligoclase), ferroaugite or ferrohedenbergite...Northeast Japan, which belong to the Green Tuff region. The Middle Miocene formation named the Tsugawa...lavas with conglomerate, sandstone and mudstone. Volcanic rocks of this formation are interpreted as products...black in color and consists of phenocrysts of plagioclase (An35-43), ferroaugite, titanomagnetite (Usp |  | | Journal (article/letter/editorial) | | 94:461-471 9 Springer-Verlag 1986 Petrology of volcanic rocks from Kaula Island, Hawaii Implications for... Abstract. A compositionally diverse suite of volcanic rocks, including tholeiites, phonolites, basanites...accidental blocks, only the phonolites and a plagioclase basanite were amenable to K-Ar age dating. They...derived from a plagioclase basanite by subtraction of 27% clinopyroxene, 21% plagioclase, 16% anorthoclase...previously, had only been reported in the Honolulu volcanic rocks) and the similar age of the Kaula basanite |  | | Journal (article/letter/editorial) | | paragenesis in pyroxenite xenoliths, Mount Sidley volcano, Marie Byrd Land, West Antarctica R. H. GRAPES1...composite volcano, Marie Byrd Land, Antarctica, as a localized breakdown product, with plagioclase, clinopyroxene...kaersutite, and as microphenocrysts (with olivine, plagioclase, clinopyroxene) in pockets of basanitic melt...below the volcanic edifice. K EY WORDS : rhonöte, pyroxenite xenoliths, Mount Sidney, volcano, Antarctica...microphenocrysts) associated with olivine, Ti-Al augite, plagioclase, ; K-feldspar, kaersutite, ; nepheline, ; leucite |  | Martin, Adam P., Price, Richard C., Cooper, Alan F., McCammon, Catherine A. (2015) Petrogenesis of the Rifted Southern Victoria Land Lithospheric Mantle, Antarctica, Inferred from Petrography, Geochemistry, Thermobarometry and Oxybarometry of Peridotite and Pyroxenite Xenoliths from the Mount Morning Eruptive Centre. Journal of Petrology, 56 (1) 193-226 doi:10.1093/petrology/egu075 | Journal (article/letter/editorial) | | Department of Geology, University of Otago, PO Box 56, Dunedin, New Zealand, 2Science and Engineering, University...University of Waikato, Hamilton, New Zealand and 3Bayerisches Geoinstitut, University of Bayreuth, 95440...address: GNS Science, Private Bag 1930, Dunedin, New Zealand. Telephone: (þ64) 3 4799683. E-mail: adammartin2000@yahoo...element (and isotope) signatures seen in Cenozoic volcanic rocks from Mount Morning, elsewhere in Victoria...recorded in the harzburgites (20–30%), whereas plagioclase lherzolite mineral data suggest <15% melt depletion |  | | Journal (article/letter/editorial) | | Geochemistry of phonolites and trachytes from the summit region of Mt. Kenya R.C. Price 1, R.W. Johnson 2, C.M...set of samples from the summit region of the Plio-Pleistocene volcano, Mr. Kenya. Most of the samples...presents data for a suite of samples from the summit region of Mt. Kenya. The suite covers a range of phonolitic...summit of 5,200 m is a central volcano located to the east of the East African Rift (Fig. 1). "~~ L...O~orgesailie Fig. 1. Mt. Kenya, the Gregory Rift, and the East African Rift System. Pliocene central volcanoes |  | | Journal (article/letter/editorial) | | lavas often occurs in the sequence olivine, plagioclase, clinopyroxene, nepheline without "obvious" reaction...of multiply saturated liquids coexisting with plagioclase (_+ olivine + clinopyroxene_+ nepheline) have...comparable extent. For example, the lavas of Karisimbi, East Africa, show a range of compositions reflecting...(+olivine+leucite) projection. Compositional curvature on the plagioclase + clinopyroxene + olivine + leucite cotectic...offers a mechanism to explain resorption of plagioclase in alkalic groundmass assemblages and the incompatibility |  | | Journal (article/letter/editorial) | | processes in a peralkaline system: The Paisano volcano, west Texas WILLIAM F. MCDONOUGH* and DENNIS0....flows, exposed in the caldera wall of the Paisano volcano, west Texas, document systematic fractional crystallization...magma-mixing; similar flows occur in other parts of the volcano at the same stratigraphiclevel. This composite...trachytic magma, derived from a similar source region which yielded the earlier caldera wall flows. Trace...magma by 88% to 93% fractionation of dominantly plagioclase and alkali feldspar, with lesser amounts of clinopyroxene |  | | | | NORTH ISLAND NEW ZEALAND Poor Kn1ght1 Is • . ,, r ,n H~n & C h1ck...Mayor I WodlO(O Rivt~r I'. MY OF East C,pe Pf.NEW PLYMO • Cil.pe Eimo C • Portl...I . I SOUTH PACIFIC /ocEAN I I Chalmer,: OTAGO PENINSULA NEDIN ---- :aitangata Clvtho River...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::~. |  | | Book (volume) | | NORTH ISLAND NEW ZEALAND Poor Kn1ght1 Is • . ,, r ,n H~n & C h1ck...Mayor I WodlO(O Rivt~r I'. MY OF East C,pe Pf.NEW PLYMO • Cil.pe Eimo C • Portl...I . I SOUTH PACIFIC /ocEAN I I Chalmer,: OTAGO PENINSULA NEDIN ---- :aitangata Clvtho River...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::~. |  | | Journal (issue) | | Earth Sciences, Macquarie University, North Ryde, New South Wales 2113 Australia ABSTRACT. Cainozoic alkali...alkali baS'altic rocks from the Southern Highlands province, eastern Australia, range from olivine nephelinites...Southern Highlands province (fig. I) covers approx 50 km2 southwest of Sydney, New South Wales, Australia...Southern Highlands basaltic rocks as a discrete province is partly based on their geographical distribution...charac terize the Southern Highlands as a discrete province, to show the domi nance of primary or primitive |
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