 | | Journal (article/letter/editorial) | | GEOLOGISTS 1987 NO. 5 The RotokawaGeothermalSystem,New Zealand:An Active Epithermal Gold-DepositingEnvironment...Scientificand Industrial Research,PrivateBag,Petone,New Zealand Abstract The Rotokawageothermalsystemis lessthan...underlyingMesoziocgraywackebasementin the Taupo volcaniczone, a region dominatedby extensionaltectonics.At...060 yrs ago and is presently occupiedby an acid lake (LakeRotokawa)with a pH • 2. Significantbeddedsulfurdeposits...Significantbeddedsulfurdeposits which formed in an earlier crater lake existbeneaththe presentlake. The deep fluidsare |  | | Journal (article/letter/editorial) | | Tectonic Controls on Hydrothermal Flow, Taupo Volcanic Zone, New Zealand: Implications for the Formation of...Auckland, New Zealand 2 Hot Solutions Ltd, PO Box 32-125, Devonport, Auckland, New Zealand Abstract...scales for geothermal systems of the Taupo Volcanic Zone, New Zealand. Most geothermal systems occur within...(Ohakuri) and six active (Broadlands-Ohaaki, Waiotapu, Rotokawa, Waimangu, Te Kopia, and Orakeikorako) geothermal...shearing, caused by low differential stresses. The Taupo Volcanic Zone is highly prospective for epithermal-style |  | Harvey, M.C., Rowland, J.V., Chiodini, G., Rissmann, C.F., Bloomberg, S., Fridriksson, T., Oladottir, A.A. (2017) CO2 flux geothermometer for geothermal exploration. Geochimica et Cosmochimica Acta, 213. 1-16 doi:10.1016/j.gca.2017.06.025 | Journal (article/letter/editorial) | | Environment, University of Auckland, Auckland, New Zealand, 2Istituto Nazionale di Geofisica e Vulcanologia...Diocleziano, Napoli 32880124, Italy, 3GNS Science, New Zealand, 4Department of Geology, Mines, and Water Resources...author: mhar098@aucklanduni.ac.nz Key Points • A new geothermometer is proposed based on soil diffuse...with geothermometry estimates for systems in New Zealand, Iceland and Argentina • 1 Geothermometer...useful for geothermal exploration Abstract A new geothermometer (TCO2 Flux) is proposed based on soil |  | | 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...temperatureargillic alteration to montmorilloniteand illite mineral assemblages.Pyrite, calcite,and chlorite...106 kg/hr, Wairakei system,1951) combinedwith long lifetimes (e.g., 5 X .105yr, Wairakei) are adequateto...hydrothermalalterationprod- and Whakarewarewa,New Zealand (2 ppm Au and uctsfoundin manyepithermal ore |  | | 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...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) | | particularly IS epithermal orebodies in any particular district, irrespective of whether or not paleosurface features...disseminated bodies Silicification, quartz-sericite/illite Main gangue minerals Steep and shallowly inclined...magmatic condensates Neutral-pH chloride water Illite, smectite IS, LS Commonly proximal 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 |  | Djokic, Tara, Van Kranendonk, Martin J., Campbell, Kathleen A., Havig, Jeff R., Walter, Malcolm R., Guido, Diego M. (2021) A Reconstructed Subaerial Hot Spring Field in the ∼3.5 Billion-Year-Old Dresser Formation, North Pole Dome, Pilbara Craton, Western Australia. Astrobiology, 21 (1) 1-38 doi:10.1089/ast.2019.2072 | Journal (article/letter/editorial) | | overlies a hydrothermally influenced volcanic caldera lake facies, with shoreline stromatolites. Hot spring...facies that are characteristic of those from New Zealand, Yellowstone National Park, USA, and Argentina...Environmental Sciences, University of New South Wales, Kensington, New South Wales, Australia. 2 Australian...Questions Institute, University of New South Wales Australia, Kensington, New South Wales, Australia. 4 Pheasant...Ao Marama, University of Auckland, Auckland, New Zealand. 6 Department of Earth Sciences, University of |  | | Book | | Originally published by Springer-Verlag Berlin Heidelberg New York in 1990. The use of registered names, trademarks...which speculation is idle, but within which useful new insights regarding the relationship of certain ores...application of plate tectonic concepts can pinpoint new metal deposits. The main tool available to the exploration...more limited utility in terms of the search for new mineral districts. The problem of the geographic...Panguna Porphyry Copper Deposit, Bougainville, Papua New Guinea ......... . Genetic Models for Porphyry Copper |  | | Book (edition) | | have incorporated into Chapter 1. Apart from the new material discussed above I have included a description...and epithermal gold mineralization and introduced new material into most chapters of this book. This work...places as far apart as France, California, Japan, New Zealand and Spain and the offers to translate it into...Some chapters have been considerably expanded and new sections added; in particular on disseminated gold...perennial complaint of industrial employers, that the new graduate has little or no commercial awareness, such |
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