 | | 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...fractionation trends. 'End member' series are: basalt-hawaiite-mugearite-benmoreite; basanite-nepheline hawaiitenepheline...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 |  | | Journal (article/letter/editorial) | | Springer-Verlag 1973 The Geochemistry of the Dunedin Volcano : Strontium Isotope Chemistry R. C. Price Department...Department of Geology, University of Otago, Dunedin, New Zealand W. Compston Research School of Earth...for samples from the alkaline lavas of the Dunedin Volcano covering the range basalt, basanite, intermediate...0 m.y. Introduction The Dunedin Volcano of east Otago Province, New Zealand is composed of a succession...homogeneity within the suite. The rocks of the Dunedin Volcano form a prominent massif about 30 km in diameter |  | | 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...analyzed were: basalt-hawaiite-mugearitebenmoreite; basanite, nepheline hawaiite, nepheline trachyandesitc...The series basanitc-nephcline hawaiite, and basanite-nephetine hawaiite-nepheline benmoreite appear to |  | | 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...Between 12 and 9.7 m.y. a large volcanic dome, composed mainly of hawaiite, was built at Lyttelton. Dykes...Dykes, which intrude the Lyttelton volcanic sequence, range in composition from basalt to trachyte. Late |  | | 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 |  | 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) | | 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) | | The subcontinental mantle beneath southern New Zealand, characterised by helium isotopes in intraplate...Geological and Nuclear Sciences, Lower Hutt, New Zealand Department of Earth and Environmental Sciences...Department of Geology, University of Otago, Dunedin, New Zealand 4 Department of Geological Sciences,... University of Canterbury, Christchurch, New Zealand 2 (Received June 21, 1999; accepted in revised...revised form January 19, 2000) Abstract—New helium isotope data measured in Cenozoic intraplate basalts and |  | | 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 |  | | 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 (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 |  | | Journal (article/letter/editorial) | | Geology and petrology of the McMurdo Volcanic Group at Rainbow Ridge, Brown Peninsula, Antarctica PHILIP...of Geology, Victoria University, Wellington, New Zealand PETER C. RANKIN Soil Bureau, Department of Scientific...Lower Hütt, New Zealand ABSTRACT Strongly undersaturated rocks of the McMurdo Volcanic Group of late...at Rainbow Ridge show a basanite to nepheline-hawaiite to nepheline-benmoreite and a basanite to nepheline-benmoreite...Two models can explain the basanite to nepheline-hawaiite transition. Model 1 involves fractionation of |  | | Journal (article/letter/editorial) | | 40 stratigraphic units, mainly basanite and Ne-hawaiite lava flows and associated pyroclastic rocks. DVDP...by flows and pyroclastic rocks of basanite, Ne-hawaiite, and then alternating Ne-mugearite and Ne-benmoreite...samples show a well-defined sequence of basanite-Ne-hawaiite-Ne-mugeariteNe-benmoreite-phonolite, termed the...occurs in the initial step from basanite to Ne-hawaiite, which represents a 43 per cent residual. The...20 km long, 2 to 4 km wide en echelon line of volcanic cones that extend in a south-southwest direction |  | | Journal (article/letter/editorial) | | of Late Cenozoic alkaline lavas of the McMurdo Volcanic Group, Antarctica PHILIP R. KYLE* Departments...Victoria University of Wellington, Wellington, New Zealand and PETER C. RANKIN Soil Bureau, Department...Scientific and Industrial Research, Lower Hutt, New Zealand (Received 12 January 1976; accepted in revisedfirm...representative of four lava lineages of the McMurdo Volcanic Group, Antarctica. A kaersutite and two feldspar...negative Eu anomaly (Eu/Eu* = 0.10). A nepheline hawaiite to anorthoclase phonolite lava lineage from the |  | | Journal (article/letter/editorial) | | paragenesis in pyroxenite xenoliths, Mount Sidley volcano, Marie Byrd Land, West Antarctica R. H. GRAPES1...erupted in phonolite from the Mount Sidley composite volcano, Marie Byrd Land, Antarctica, as a localized breakdown...below the volcanic edifice. K EY WORDS : rhonöte, pyroxenite xenoliths, Mount Sidney, volcano, Antarctica...xenoliths from Mount Sidley, Marie Byrd Land volcanic province, Antarctica, are compared with published data...Facility of Victoria University of Wellington, New Zealand. Operating conditions followed full ZAF corrections |  | | Journal (article/letter/editorial) | | comparable extent. For example, the lavas of Karisimbi, East Africa, show a range of compositions reflecting...responsible for diversity in the composition of alkalic volcanic and hypabassal rock suites. Introduction Despite...the late Quaternary cinder cones of the andesite volcano Colima (Luhr and Carmichael 1981), two leucite...(SSC-[I, 2]) series of lavas from the Lake Rudolf region (Brown and Carmichael 1969, 1971), a basalt glass...andesite from the floor of the caldera of the Colima volcanic complex (COL-11/10; Luhr and Carmichael 1980) |  | | 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) | | Sr VARIATION BY FRACTIONAL CRYSTALLIZATION FOR VOLCANIC ROCKS FROM ISLAND ARCS AND CONTINENTAL MARGINS...Sr variation by fractional crystallization for volcanic rocks from island arcs and continental margins...that K~r is greater than 1 in various natural volcanic rocks (Berlin and Henderson, 1968; Philpotts and...very reasonable, but its application to natural volcanic rocks cannot be accepted. The misinterpretation...quantitatively apply Banno and Yamasaki's theory to volcanic rock sequences from island arcs and continental |  | | Journal (article/letter/editorial) | | elements (Ti. Zr, Y, Nb, Ce, Ga and So) in fresh volcanic rocks cam be used to clses/fy the differentiation...variation diagrams may be used to distinguish common volcanic rock types in terms of the above elementL As these...y used t o classify fresh or slightly altered volcanic r o ck s all use d e m e n t s k n o w n t o be...reliably utilized t o i dent i fy and classify volcanic rocks which have been m e t a m o r p h o s e...chemical means o f discriminating d i f f e r e n t volcanic r o c k t y p e s and magma series which m a y |  | | Journal (article/letter/editorial) | | Springer-Verlag 1982 Petrology and Geochemistry of Hawaiite Lavas from Crater Flat, Nevada D.T. Vaniman, B...Laboratory, Los Alamos, NM 87545, USA Abstract. Hawaiite-type lavas were erupted in three cycles (3.7,...clinopyroxene, and amphibole to arrive at the more evolved hawaiite compositions. In general, fractionation of phlogopite...cycles although all cycles are consistently of hawaiite composition. Basalts of the youngest two cycles...SVSr/86Sr ratio (0.707) typical of basalts in this region. The very low Rb/Sr ratios limit processes that |  | | 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...previously, had only been reported in the Honolulu volcanic rocks) and the similar age of the Kaula basanite...light gray (phonolite) and dark gray (basalt) volcanic rocks, coralline material, coarse-grained ultramafic...geochronological data on the distinctive, accidental volcanic blocks recovered from Kaula Island and to compare |  | LeMasurier, Wesley E., Futa, Kiyoto, Hole, Malcolm, Kawachi, Yosuke (2003) Polybaric Evolution of Phonolite, Trachyte, and Rhyolite Volcanoes in Eastern Marie Byrd Land, Antarctica: Controls on Peralkalinity and Silica Saturation. International Geology Review, 45 (12) 1055-1099 doi:10.2747/0020-6814.45.12.1055 | Journal (article/letter/editorial) | | University of Otago, Dunedin, New Zealand2 Abstract In the Marie Byrd Land volcanic province, peralkaline...June 2016 Introduction THE LATE CENOZOIC volcanic province in Marie Byrd Land (MBL) lies on the Pacific...pantellerites, and comendites are a major part of the province. They occur in 18 shield volcanoes, some of which...largest volcano in the Cascade Range (Christiansen, 1990). Most felsic compositions in the province are found...ne-mugearite cone on the caldera rim of a comendite volcano. Similarly, in the chain as a whole, phonolitic |  | | Journal (article/letter/editorial) | | Netherlands 323 Petrology and geochronology of volcanic rocks from seamounts along and near the Hawaiian...Naughton, J.J .• 1987. Petrology and geochronology of volcanic rocks from seamounts along and near the Hawaiian...data base. New ages further document the linear age progression along the cham and define a new propagation...of the chain consists of seamounts (87 of I07 volcanic edifices that comprise the chain and all but four...ever been undertaken. Rocks from only 8 of the 48 volcanic edifices between Nihoa Island and the bend in |
|
