 | | Journal (article/letter/editorial) | | 95-108 Gold-SilverOre-GradePrecipitates from New Zealand Thermal Waters B. G. WEISSBERG Abstract Gold-silverore...areas along the easternmargin of the Taupo Volcanic Zone, New Zealand. They occur as red-orange amorphoussulfideswith...hydrothermalalterationprod- and Whakarewarewa,New Zealand (2 ppm Au and uctsfoundin manyepithermal ore...area is exceptionalin and the Hauraki Peninsula,New Zealand) are similar havingas muchas 6% Ag in the scaleoccurringas...amountsof metalsoccur along the easternmargin of the Taupo VolcanicZone,.at Waimangu,Waio-tapu, Ohaki-Broadlands |  | | Journal (article/letter/editorial) | | University of Auckland, Private Bag, 92019, Auckland, New Zealand Abstract The Broadlands-Ohaaki geothermal system...mineral zonation, which is the focus of this paper. New data are presented on the occurrence and abundance...side of the Taupo Volcanic Zone, is 1 of about 20 known hydrothermal systems in the region (Fig. 1). These...been drilled (Fig. 1). The A B M7 White Island Taupo Volcanic Zone 12 ikat Wa 5 24 34(M2,4) BROADLANDS/...system is located in the Taupo Volcanic Zone of the North Island, New Zealand. Widespread volcanism and |  | | Journal (article/letter/editorial) | | particularly IS epithermal orebodies in any particular district, irrespective of whether or not paleosurface features...Opal/chalcedony H2S-bearing steam and SO2- Opal, cristobalite and HCl-bearing magmatic condensates Neutral-pH...neutral-pH, alkali chloride waters along streams and on lake margins and bottoms, although shallow boiling also...level of Frying Pan Lake (6-m deep, pH 3.5, 55 °C), Waimangu geothermal system, Taupo Volcanic Zone, North...North Island, New Zealand (see Simmons et al. 1993) The reactive H2S-bearing steam condensate formed in |  | | Journal (article/letter/editorial) | | redistribution of Li, B and Cl in the Taupo Volcanic Zone, New Zealand A.G. Reyes a,â, W.J. Trompetter b...Hutt, New Zealand GNS-Science, National Isotope Centre, 30 GraceïŹeld Road, Lower Hutt, New Zealand a r...Hydrothermal waterârock interaction Taupo Volcanic Zone New Zealand a b s t r a c t Lithium, B and Cl...underlying high temperature hydrothermal systems in the Taupo Volcanic Zone (TVZ). The ïŹuid mobility of Li decreases...been evaluated using B/Li and B/Cl ratios. In the Taupo Volcanic Zone (TVZ), Cl ïŹuxes are used to estimate |  | | Journal (article/letter/editorial) | | forming at the Wairakei geothermal power plant in New Zealand are composed of noncrystalline opal-A that deposited...formed at the Wairakei geothermal power plant in New Zealand using a combination of optical microscopy and...from the Wairakei Geothermal Power Plant in New Zealand 2.1. Geological Background The Wairakei geothermal...located 8 km north of Taupo in the Taupo Volcanic Zone of North Island, New Zealand (Figure 1a). Exploration...beneath Wairakei [29]. Active extension in the Taupo Volcanic Zone (2â8 mm/year) and related fault activation |  | | 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, âą terrace...Figure 1. Simplified geological sketch-map of New Zealand. 0 20 40 60 80 100 KM l INTRODUCTION It...Morgan's "Minerals and Mineral Substances of New Zealand" was published, as NZ. Geological Survey bulletin |  | | Journal (article/letter/editorial) | | studies of the geothermal system at Wairakei, New Zealand* R. N. CLAYTON Enrico Fermi Institute, and Departments... U.S.A. and A. STEINER New Zealand Geological Survey, Lower Hutt, New Zealand (Received 27 August 1974;...phenocrysts and xenocrysts remain unexchanged, and only new hydrothermal quartz is in isotopic equilibrium with...ESLINGERand SAVIN,1973). The Wairakei ther-ma1 area of New Zealand is of particular interest for isotopic investigation...These interactions frequently lead to formation of new mineral phases, but in some cases simply involve |  | | Journal (article/letter/editorial) | | rock and intrusive lavas from the Taupo Volcanic Zone, New Zealand P. Mielke a,â, S. Weinert a, G. Bignall...Research Centre, 114 Karetoto Road - RD4, Taupo 3377, New Zealand a r t i c l e i n f o Article history:...Terrane form the basement of the Taupo Volcanic Zone (TVZ), New Zealand. Together with inferred buried...geothermal resources of New Zealand utilised for power generation are located in the Taupo Volcanic Zone (TVZ)...approximately 17% of the total electricity produced in New Zealand. Since 1988 geothermal power generation increased |  | Chambefort, I., Lewis, B., Simpson, M. P., Bignall, G., Rae, A. J., Ganefianto, N. (2017) Ngatamariki Geothermal System: Magmatic to Epithermal Transition in the Taupo Volcanic Zone, New Zealand. Economic Geology, 112 (2) 319-346 doi:10.2113/econgeo.112.2.319 | Journal (article/letter/editorial) | | Magmatic to Epithermal Transition in the Taupo Volcanic Zone, New Zealand I. Chambefort,1,â B. Lewis,1 M. P...2000, Taupo 3352, New Zealand 2 Mighty River Power Limited, PO Box 245, Rotorua 3040, New Zealand Abstract...(>225°C) geothermal systems in the Taupo Volcanic Zone, North Island, New Zealand. At shallow levels (<2 km)...hydrothermal alteration found nowhere else in the Taupo Volcanic Zone. Two separate phases of hydrothermal...Geothermal systems such as those of the Taupo Volcanic Zone, New Zealand, are responsible for the transfer |  | | Report (issue) | | from Battleship Rock, Jemez Springs quadrangle, New Mexico__________________________________________________...Photomicrograph of glassy ash -flow tuff from Arequipa region, Peru. showing; wide range in the size of the shards...Photomicrograph of glassy welded tuff from Arequipa region, Peru, showing lack of characteristic shard forms...Photomicrograph of glassy welded tuff from Lake Toba region, North Sumatra, with compressed shards molded...tomicrograph of glassy ash-flow tuff from Lake Toba region, North Sumatra, with only slight welding and |  | | Book | | Structures of High-Purity Quartz from the Southern Ural Region, Russia Reprinted from: Minerals 2017, 7, 189,...However, modern analytical methods brought a lot of new mineralogical and geochemical data concerning the...methods is illustrated by two contributions providing new data concerning thermogravimetry-massspectrometry...silica polymorphs, such as quartz, tridymite, cristobalite, coesite, stishovite, seifertite, high-pressure...Analytics; Springer Geology: Heidelberg, Germany; New York, NY, USA; Dordrecht, The Netherlands; London |  | | Book | | Structures of High-Purity Quartz from the Southern Ural Region, Russia Reprinted from: Minerals 2017, 7, 189,...However, modern analytical methods brought a lot of new mineralogical and geochemical data concerning the...methods is illustrated by two contributions providing new data concerning thermogravimetry-massspectrometry...silica polymorphs, such as quartz, tridymite, cristobalite, coesite, stishovite, seifertite, high-pressure...Analytics; Springer Geology: Heidelberg, Germany; New York, NY, USA; Dordrecht, The Netherlands; London |  | | Book | | Palmerston North, New Zealand JEROM LECONTRE Massey University, Palmerston North, New Zealand GERT LUBE Massey...Massey University, Palmerston North, New Zealand MURRAY M. MCCLINTOCK Otago University and Volcanic...Limited, Dunedin, New Zealand BOB STEWART Massey University, Palmerston North, New Zealand JAMES D. L. WHITE...WHITE Otago University, Dunedin, New Zealand Technikal editor: OLGA PIROS, DEZSĆ SIMONYI DTP: DEZSĆ...volcano in the Central North Island of New Zealand. Tama maar lake is in the foreground. Back page of cover: |  | | Book | | Series editor Karoly Nemeth, Palmerston North, New Zealand Editor-in-Chief IAVCEI, Barcelona, Spain For...Italy Bruce Christenson GNS Science Lower Hutt New Zealand Franco Tassi Earth Sciences University of Florence...Congress Control Number: 2014957163 Springer Heidelberg New York Dordrecht London © Springer-Verlag Berlin Heidelberg...evaporation, seepage and spillover). Changes in lake temperature or chemistry often, though not always...indicate changes in magma degassing; changes in lake level can indicate strain of the ediïŹce; and bubbling |  | | Book | | hydrothermal alteration convert the glass to aggregates of new mineral phases such as clays, zeolites, sericite...followed by precipitation from solution of finegrained new minerals. In many cases, silicic glass in ancient...consist of alkali feldspar and/or quartz (or cristobalite). In mafic rocks, spherulite fibres consist...rapidly devitrified, crystallized and/or altered. The new minerals may faithfully preserve the vesicular texture...electrostatic forces, particle interlocking and growth of new minerals as the condensed moisture evaporates (Reimer |  | | Journal (article/letter/editorial) | | diameter, and are common deposits in Yellowstone Lake. Domal mounds are characterized by siliceous precipitates...historical record of hydrothermal activity in the region. A wealth of information is contained in these...Yellowstone. This geyser group is located along Firehole Lake Drive. Tuft Geyser and Deerbone Spring are in very...about these springs. Thus, our observations provide new insights into these features. Deerbone, a previously...conditions, shrubs low relief pond Yellowstone Lake Spires Deerbone Spring Domal mound Terraced mound |  | | Report (issue) | | 2âČ30978752âdc22 2009034130 Cover: View looking east into Duck Lake, a 4â6-ka large hydrothermal explosion crater due...basin. Surrounding the lake is a rim of hydrothermal explosion ejecta. Duck Lake is one of at least 20... . . . . . . . 15 Northern Basin of Yellowstone Lake and Vicinity . . . . . . . . . . . . . . . . . .... . . . . . . . . . . . . . . . . . . 30 Turbid Lake . . . . . . . . . . . . . . . . . . . . . . . ....Hydrothermal Explosion Craters North of Yellowstone Lake . . . . . . . . . . . . . . . . . . . . . 45 Sulfur |  | | Book | | appointments at the Astrobiology Centre, University of New South Wales, Sydney, and the China University of...in Europe, southern Africa, South East Asia, New Zealand, the southwest Pacific, China, Greenland and... Contents 4.6.5 Candelaria, Punta Del Cobre District, Chilean Coastal Belt. . . . . . . . . . . . ...2 Ladolam Epithermal System, Lihir Island, Papua New Guinea . . . . . . . . . . . . . . . . . . . . ....3.3 Hauraki Goldfield, Coromandel Peninsula, New Zealand 5.3.4 The Epithermal Systems of the Biga Peninsula |  | | Book | | introduction to igneous petrology London LONGMAN and New York Longman Group Limited Longman House, Burnt...in the United States of America by Longman Inc., New York © Longman Group Limited 1985 All rights reserved;...petrology has expanded to accommodate a wide range of new information from both the Earth and the other terrestrial... Guttard studied the rocks of the Auvergne region of central France and recognized many recently...Fifty years after the publication of this work, a new book called The Evol- ution of the Igneous Rocks: |  | | Book | | major producing districts, or a representative district if there are many. We name the chief mining companies...graphite supply must come not merely from one district but from a single mine. Thus the physical properties...resin and maximizes dispersion. 3. Development of new applications. The market for fillers in rubber, paper...(Mann, 1983). nia; the USSR; the Italian Alps; New South Wales, Austral- ia; Cyprus). (2) Stratiform...from the Baie Verte district of Newfoundland though the Thetford Mines, Black Lake, and Asbestos districts |  | | Book (edition) | | Houghton Institute of Geology and Nuclear Science, New Zealand Stephen R. McNutt Alaska Volcano Observatory...and Technology Company San Diego San Francisco New York Boston London Sydney Toronto Academic...Earth Observatory Palisades, New York, USA Melting the Mantle JAYNE AUBELE New Mexico Museum of Natural History...History and Science Albuquerque, New Mexico, USA Volcanism on Venus PETER J. BAXTER Cambridge University...Lakes RUSSELL BLONG Macquarie University North Ryde, New South Wales, Australia Volcanic Hazards and Risk |  | | Report (issue) | | Magnetic Anomalies over the Central Volcanic Region of New Zealand Alexander Malahof . . . . . . . . . . ....University of Tokyo, Tokyo, Japan Abstract. Thirty-eight new heat flow values, obtained mainly in the western...sparse. I n this paper we present the results of 35 new measurements made after November 1965 and the three...~calaJcmsec. TABLE 2. RESULTS Table 2 gives the 38 new heat flow values, and Table 3 gives the previously...features. The geographical distributions of heat New Heat Flow Measurements Thermal Gradient Date Name |  | | Book | | M P A N Y 1982 A M S T E R D A M - O X F O R D - NEW Y O R K St. John's, ELSEVIER SCIENCE PUBLISHERS...coupled however with a slackening in the rate of new major advances in synthesis and understanding. Thus...Iceland, India, Nepal, Malaysia, Australia, New Zealand and Japan, and especially the stimulus afforded...α-quartz high-temperature or ÎČ -quartz* tridymite* cristobalite* Plagioclase feldspar anorthite ( e ) albite...that analysis is frequently required. A proposed new overall nomenclature of amphiboles (Leake, 1978) |  | | Book | | years this has lead to the establishment of many new species that are compositional and structural analogs...Subcommittee for Zeolite Nomenclature of the Commission on New Minerals and Mineral Names (CNMMN) of the International...evaluating proposed new species, it is difficult to apply them rigidly to accepted species. 1. A new zeolite mineral...must be demonstrated as a condition for approval of new species. Zeolites that have the same framework and...structure are acceptable as separate species. 2. A new zeolite mineral cannot be defined solely on the basis | | | Book | | years this has lead to the establishment of many new species that are compositional and structural analogs...Subcommittee for Zeolite Nomenclature of the Commission on New Minerals and Mineral Names (CNMMN) of the International...evaluating proposed new species, it is difficult to apply them rigidly to accepted species. 1. A new zeolite mineral...must be demonstrated as a condition for approval of new species. Zeolites that have the same framework and...structure are acceptable as separate species. 2. A new zeolite mineral cannot be defined solely on the basis |
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Lake Taupo, Taupo District, Waikato Region, New Zealand