 | | 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) | | 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...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...p p e r Miocene age. The volcano a n d its rocks h a v e been described in several publications, for |  | | 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) | | 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) | | 425 The iron-titanium oxides of some Dunedin (New Zealand) lavas, in relation to their palaeomagnetic...p a r t m e n t , U n i v e r s i t y of Otago, N e w Zealand 1 [Read 8 June 1967] Summary. Earlier palaeomagnetic...palaeomagnetic studies on the Dunedin volcano showed that a portion of the sequence is reversely or anomalously...operative, the reversely magnetized part of the Dunedin sequence was probably erupted during a reversed...phonolites f r o m the Mio-Pliocene D u n e d i n volcano v a r i e d w i t h respect to their position in |  | | 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) | | 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...of the lava lineages is mildly potassic with trachyandesite to peralkaline K-trachyte lavas which have |  | | 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) | | is that they have similar slopes in the La-Sm region for differing degrees of REE enrichment (Fig. 1)...pronounced parallelism of the patterns in the La-Sm region. This feature is also displayed by individual suites...modelling of three alkali basalts from the Dunedin Volcano, New Zealand (Price and Taylor 1973). The points...orthopyroxene, 15% clinopyroxene. 1 =nepheline trachyandesite, 2=nepheline benmoreite, 3=basanite I I I...neglected. The periodicity of eruptions for an alkali volcano, which is of the order of 100 years, is consistent |  | | 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) |  | | | | 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::~. |  | Briot, D., Cantagrel, J.M., Dupuy, C., Harmon, R.S. (1991) Geochemical evolution in crustal magma reservoirs: Trace-element and SrNdO isotopic variations in two continental intraplate series at Monts Dore, Massif Central, France. Chemical Geology, 89 (3) 281-303 doi:10.1016/0009-2541(91)90021-i | Journal (article/letter/editorial) | | Ma. After erosion and basaltic eruptions, major volcanic activity resumed with trachytic pyroclastics and...providing heterogeneous and less contaminated trachyandesite magmas. For the silica-undersaturated series...lavas of alkaline intermediate composition in some volcanic districts. For instance, the Can- tal and Monts...with basalts (83%) and trachytes (10%). Other volcanic districts are 282 mainly basaltic, with rare...main geochemical and isotopic features of the volcanic rocks of the Monts Dore and discuss the origin |  | | Journal (article/letter/editorial) | | in Marlborough, New Zealand: Implications for the Long-lived HIMU Magmatic Mega-province of the SW Pacific...WELLINGTON, NEW ZEALAND 2 NATIONAL ISOTOPE CENTRE, GNS SCIENCE, PO BOX 31312, LOWER HUTT 5040, NEW ZEALAND...RESEARCH, PRIVATE BAG 14901, WELLINGTON 6041, NEW ZEALAND RECEIVED MAY 22, 2009; ACCEPTED JULY 27, 2010...HIMU-like mantle signature in the SW Pacific (e.g. New Zealand, Australia and Antarctica) have been erupted...the oldest samples of this HIMU magmatic mega-province and are remnants of extensive mid-Cretaceous (98 |  | Brenna, Marco, Nakada, Setsuya, Miura, Daisuke, Toshida, Kiyoshi, Ito, Hisatoshi, Hokanishi, Natsumi, Nakai, Shun’ichi (2015) A trachyte–syenite core within a basaltic nest: filtering of primitive injections by a multi-stage magma plumbing system (Oki-Dōzen, south-west Japan) Contributions to Mineralogy and Petrology, 170 (2) doi:10.1007/s00410-015-1181-0 | Journal (article/letter/editorial) | | is a Late Miocene (7–5 Ma) intraplate alkalic volcano composed of a central trachytic pyroclastic complex...that was intruded into the basement early Miocene volcano-sedimentary succession. In the centre of the system...and petrological data from the central trachytic volcanic complex and the intrusive syenite body, as well...basaltic succession. We also present and discuss a new set of zircon U/Pb ages collected from the central...assimilation occurred in crustal and shallow sub-volcanic magma reservoirs. In the central part of the system |  | | Journal (article/letter/editorial) | | Victoria Land: Implications for mid-Pleistocene volcanic activity in Antarctica Anastassia Y. Borisova...Victoria Land: Implications for mid-Pleistocene volcanic activity in Antarctica, Polar Science, https://doi...Victoria Land: Implications for mid-Pleistocene volcanic activity in 3 Antarctica 4 5 Anastassia Y...the currently active McMurdo volcanic group. 34 35 Keywords: volcanic tephra; Antarctica; Allan Hills;...Introduction 38 Antarctica is a volcanically active region (Kyle et al., 1990; Wörner, 1999; Van Wyk de 39 |  | | Journal (article/letter/editorial) | | lherzolite xenolith (Bri3) from Mont Briançon volcano, French Massif Central. As Bri3 contains only 100...nepheline normative and plot in the trachybasalt to trachyandesite fields. In detail, comparison of melt compositions...grid corresponds to the chemical classification of volcanic rocks, with the main fields of interest labeled...Phonolite; (3) Trachyte; (4) Trachyandesite; (5) Basaltic trachyandesite; (6) Trachybasalt; (7) Basalt;...(V) basalts (see Fig. 4 for the nomenclature of volcanic rocks). chyandesite melt for a source with 2000 |  | | Journal (article/letter/editorial) | | Intraplate Basalts in the South Auckland Volcanic Field, New Zealand: Evidence for Two Coeval Magma Suites...HAMILTON, NEW ZEALAND 2 DEPARTMENT OF GEOLOGY, UNIVERSITY OF AUCKLAND, PRIVATE BAG 92019, AUCKLAND, NEW ZEALAND...PUBLICATION NOVEMBER 26, 2004 The South Auckland Volcanic Field is a Pleistocene (159– 051 Ma) basaltic...monogenetic field situated south of Auckland City, North Island, New Zealand. Two groups of basalts are distinguished...or earlier subduction- and The South Auckland Volcanic Field is one of a number of Pliocene to Recent |  | | Journal (article/letter/editorial) | | in Africa, Hay et al., 1995; Central European volcanic complex in Germany, Wörner et al., 1985), subduction-related...2008, 2010, 2012; Scaillet et al., 2008). In some volcanic regions, phonolites are RI associated with mafic...(Legendre et MA intermediate rocks occur in volcanic provinces such as Ua Pou Island, Marquesas archipelago...and trachytes from the Dabie-Sulu orogenic belt in east-central China. The results provide insights into...Dabie orogen in the west and the Sulu orogen in the east (Fig. 1a). PT Whereas syn-exhumation alkaline |  | Wiesmaier, S., Troll, V. R., Carracedo, J. C., Ellam, R. M., Bindeman, I., Wolff, J. A. (2012) Bimodality of Lavas in the Teide-Pico Viejo Succession in Tenerife--the Role of Crustal Melting in the Origin of Recent Phonolites. Journal of Petrology, 53 (12) 2465-2495 doi:10.1093/petrology/egs056 | Journal (article/letter/editorial) | | RANKINE AVENUE, SCOTTISH ENTERPRISE TECHNOLOGY PARK, EAST KILBRIDE G75 0QF, UK 6 DEPARTMENT OF GEOLOGICAL...stratigraphic constraints has since been much improved by new radiometric dating (Carracedo et al., 2007). Systematic...investigations of the compositional bimodality of the volcanic products [the ‘Bunsen^Daly Gap’, after Bunsen...compositions of the erupted material. For example, in the east African Gregory Rift Valley the eruption of Miocene...Islands are the surface expression of a 750 km long volcanic belt that is located off Morocco (Fig. 1; see |  | | Book (volume) | | 379-4634) India Affiliated East-West Press PVT Ltd G-1/16 Ansari Road New Delhi 110 002 India (Orders:...been many improved and new techniques for investigating minerals, producing a new body of data and often...temperatures and pressures at which they were formed. New techniques have greatly extended the ranges of temperature...moreover as discrete entities, has given rise to the new biopyribole minerals, and these are treated separately...the first edition of Rock Forming Minerals, three new minerals from the Laytonville Quarry, California |  | | Journal (article/letter/editorial) | | and Ali-Abad porphyry copper deposits, Taft-Yazd Province, Central Iran B. TAGHIPOUR AND I. NOORBEHESHT...Beheshty University Northern parts of Isfahan province are included into well known Cenozoic Magmatic...Belt of Central Iran. There is extensive Eocene volcanic events. Field observation indicated that, the...of fresh and altered volcanics are determined. Volcanic rocks with chemical composition andesite to trachy-...component from the enstatite chondrite forming region has been suggested previously [e.g. 5]. Our observations |  | | Book | | the United States with John Wiley & Sons, Inc., New York Longman Scientific & Technical, Longman Group...with John Wiley & Sons, Inc., 605 Third Avenue, New York, NY 10158 © Longman Group UK Limited 1987 All...Dr J S Myers for fig 49 from fig 7 (Myers 1975); New York State Museum and Science Service for fig 350...(1981). There are two reasons for examining recent volcanic activity before turn¬ ing to the igneous rocks...provinces are more difficult. Secondly, recent volcanic rocks are obvi¬ ously magmatic, whereas ancient |  | | Report (issue) | | (Bottom) Carbonatite lava at Oldoinyo Lengai volcano, northern Tanzania. Courtesy Alexander J. Teague...in NE Africa—New data from lower-crustal and mantle xenoliths from the Bayuda volcanic field, Sudan ...Evolution of the lithospheric mantle beneath the East African Rift in Tanzania and its potential signatures...of alkaline lava series, Kilimanjaro, Tanzania: New constraints on petrogenetic processes . . . . . ...and natrocarbonatite lavas at Oldoinyo Lengai volcano, Tanzania. . . . . . . . . . . . . . . . . . . |
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