| | Journal (article/letter/editorial) | PARAGENESES OF SECONDARY MINERALS IN THE ONIKOBE GEOTHERMAL SYSTEM, JAPAN J.G. LIOU 1, Y O T A R O SEKI 2, R...Geotectonic Laboratory, Saitama University, Urawa (Japan) 3Department o f Geology, Southern Illinois University...Research Institute, University of Tokyo, Tokyo (Japan) (Accepted for publication July 16, 1984) Abstract...parageneses of secondary minerals in the Onikobe geothermal system, Japan. In: Y. Kitano (Guest-Editor), Water--Rock...minerals in many core samples of the Onikobe geothermal system, Japan, were investigated in detail in order | | | Journal (article/letter/editorial) | similar to those in New Zealand. Recent data from Japan, however, have revealed that zeolite facies metamorphism...and Seki et al. (in press) in the Onikobe active geothermal field, and by Utada (1965) in the Mogami...contain quartz (or opal). There are few reliable petrological studies of zeolites in quartz-free rocks... b) gave elaborate descriptions of zeolites in quartz-free basalt piles of eastern Iceland and Ireland...partie,.dar grade of metamorphism can coexist with quartz or not is not clearly specified in most cases. | | | Journal (article/letter/editorial) | Numerical Studies of the Hoso‐ kura Deposit, Northern Japan Hiroshi Takahashi, Shohei Albert Tomita, Katsuaki...Numerical Studies of the Hosokura Deposit, Northern Japan, Ore Geology Reviews (2020), doi: https://doi.org/10...Numerical Studies of the Hosokura Deposit, Northern Japan A Cold-Water Trap as an Essential Process for the...Numerical Studies of the Hosokura Deposit, Northern Japan 1. Introduction Epithermal deposits are equally...deposition was proposed in a study of active geothermal systems in New Zealand (Henley and Ellis, 1983) | | | Journal (article/letter/editorial) | Srodon and Ebed, 1984; Curtis et al., 1985) and in geothermal systems and hydrothermal ore deposits (Innoue...features of the complexes are outlined here to support field and mineralogical distinctions. A plot of Sit2 v...contains variable amounts of plagioclase, Kfeldspar, quartz, biotite, amphibole and chlorite. Biotite forms...alteration. (3) The high-alumina trondhjemite contains quartz and plagioclase with some K-feldspar, muscovite...The peralkaline granite (PGR) contains perthite, quartz and alkali amphibole (as the main mafic mineral) | | | Journal (article/letter/editorial) | the Del Puerto ophiolite and from some active geothermal systems. Phyllosilicates in the Point Sal remnant...Troodos ophiolite, DSDP Hole 5048, and Onikobe and Icelandic geothermal fields that has been identified with...environrnents (Hoffman and Hower, 1979), active geothermal systems (Kristmannsd6ttir, 1975;-Keith et al...between 300 and 400 'C and pressuresof 2 kbar. Both field and experimental studiesindicate that the transition...Sampleswereplated onto ceramictiles composedof quartz and mullite. Two tiles were preparedfor each sample | | | Book | paired metamorphic belts 3-4 Baric types and geothermal gradients 3-5 Temperature and pressure corresponding...Classification of burial metamorphic terranes in terms of geothermal gradients 6A-2 Zeolite and prehnite-pumpellyite... 124 130 133 Zeolite distribution in active geothermal fields Zeolite and prehnite-pumpellyite facies...minerals Prehnite and pumpellyite Opal, chalcedony and quartz 139 139 140 147 149 152 153 156 156 159 163...metapelites in the Ryoke belt and Abukuma Plateau, Japan 7A-3 Low-pressure metapelites in Australia 7A-4 | | | Book | from Tezuka, Japan (Harada et al. 1968); and even 0.299 in a mineral from Morojose, Japan (Harada et al...Kladno, Bohemia (see Foster 1965) and at Waniguchi, Japan (Harada et al. 1968) is gonnardite: this has been...assemblage of Cretaceous or Neogene formations of Japan. On the whole, natrolite seems quite rare as a sedimentary...1940); in the basalts ofVolhynia (Shashkina 1958). Japan: in the analcime-dolerite from Nemuro, Hokkaido...metasomatic action on pre-existing rocks (Judin 1963). Japan: in the metagabbros from Yani, Aichi Pref. (Matsubara |
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