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Ishikawa index

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Journal Article
Journal: GSA Bulletin
Published: 12 November 2019
GSA Bulletin (2019)
... to subduction: Paleostress analysis of dike swarms during the subduction initiation in the Oman Ophiolite Susumu Umino1 Yuki Kusano2 Atsushi Yamaji3 Takahiro Fudai4 Akihiro Tamura5 and Shoji Arai6,§ 1 College of Science and Engineering, Kanazawa University, Kakuma-machi, Kanazawa, Ishikawa 920-1192, Japan...
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Downhole variation of modified alteration <b>index</b> (MAI), <b>Ishikawa</b> alteration ...
Published: 01 May 2019
Fig. 16. Downhole variation of modified alteration index (MAI), Ishikawa alteration index (AI), and chlorite-carbonate-pyrite index (CCPI) values in rocks from A. Gränsgruvan (drill core GGR 137), B. Gränsgruvan (drill core GGR125), and C. Dammberget (drill core SSF26). Drill core logs showing
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F ig . 14. Alteration <b>index</b> ( <b>Ishikawa</b> et al., 1976 ) vs.
      chlorite-ca...
Published: 01 August 2001
F ig . 14. Alteration index ( Ishikawa et al., 1976 ) vs. chlorite-carbonate-pyrite index ( Large et al., 2001a ) for the three compositional groups recognized in the Mount Black and Sterling Valley Volcanics. A. Group 1. B. Group 2. C. Group 3. The least altered fields
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F ig . 8. Plot of <b>Ishikawa</b> alteration <b>index</b> vs. chlorite-carbonate-pyrite (...
Published: 01 August 2001
F ig . 8. Plot of Ishikawa alteration index vs. chlorite-carbonate-pyrite (CCP) index for samples from the principal alteration zones (A) and spatially relative to ore (B). Abbreviations as for Table 1 .
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F ig . 15. Alteration <b>index</b> (AI;  <b>Ishikawa</b> et al., 1976 ) vs. K 2 O&#x2F;K 2 O +...
Published: 01 August 2001
F ig . 15. Alteration index (AI; Ishikawa et al., 1976 ) vs. K 2 O/K 2 O + Al 2 O 3 for back-arc-related Mount Read Volcanics dacites, Tasmania, Australia. Data is derived from numerous published and unpublished sources and is collated in a database at the Centre for Ore Deposit Research
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F ig . 12. Contoured geochemical <b>indexes</b> for section 1700 mN: (a) <b>Ishikawa</b> ...
Published: 01 August 2001
F ig . 12. Contoured geochemical indexes for section 1700 mN: (a) Ishikawa alteration index; (b) Ba/Sr. Geology key is same as Figure 2 .
Journal Article
Journal: Economic Geology
Published: 01 August 2001
Economic Geology (2001) 96 (5): 957–971.
...Ross R. Large; J. Bruce Gemmell; Holger Paulick; David L. Huston Abstract Zonal alteration is a common feature in volcanic rocks surrounding sea-floor massive sulfide deposits. Alteration indexes, such as the Ishikawa alteration index (AI) and the chlorite-carbonate-pyrite index (CCPI), have been...
FIGURES | View All (17)
Journal Article
Journal: Economic Geology
Published: 01 August 1962
Economic Geology (1962) 57 (5): 785–798.
...Hideo Ishikawa; R. Kuroda; T. Sudo Abstract "The distribution of the minor elements in the altered zones with respect to the distance from the ore deposit indicates a remarkable regularity. Silver, copper, nickel, barium, chromium, vanadium, cobalt and lead decrease regularly as the distance from...
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Binary plots of the <b>Ishikawa</b> alteration indices (AI) and the modified alter...
Published: 01 May 2019
Fig. 13. Binary plots of the Ishikawa alteration indices (AI) and the modified alteration index (MAI) versus TiO 2 /Zr for whole-rock analyses from selected deposits in the Stollberg ore field (modified from Allen and Svenson, 2004 ). A. MAI, Gränsgruvan. B. AI, Gränsgruvan. C. MAI, Dammberget
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Hydrothermal alteration in the study area. A. and B. Maps of the <b>Ishikawa</b> a...
Published: 01 January 2014
Fig. 13 Hydrothermal alteration in the study area. A. and B. Maps of the Ishikawa alteration index (AI; Ishikawa et al., 1976 ) for surface and drill core samples, respectively. Geologic boundaries are provided for reference. Note that for simplicity, core samples are projected vertically from
Journal Article
Published: 06 September 2017
Geological Magazine (2018) 155 (8): 1742–1760.
... of the Yatsuo Formation, east of Kanazawa City, Ishikawa Prefecture . Japanese Journal of the Geology and Geography 34 , 19 – 34 . Ishizaki , K. 1966 . Miocene and Pliocene Ostracodes from the Sendai area, Japan . Science Reports of the Tohoku University, Second Series (Geology) 37 , 131...
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Journal Article
Published: 01 October 2000
Clays and Clay Minerals (2000) 48 (5): 511–520.
... (DO), and electrical-conductivity (EC) conditions ( Tazaki et al. , 1998 ). Figure 1. Index maps: (A) Japan showing the location of southern Kyushu. (B) Southern Kyushu showing location of Satsuma-Iwo Jima and Kikai Caldera. (C) Map of Satsuma-Iwo Jima showing the location of Akayu Hot...
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Journal Article
Published: 01 May 2009
Seismological Research Letters (2009) 80 (3): 458–464.
...Hiroyuki Fujiwara; Nobuyuki Morikawa; Yutaka Ishikawa; Toshihiko Okumura; Jun'ichi Miyakoshi; Nobuoto Nojima; Yoshimitsu Fukushima © 2009 by the Seismological Society of America 2009 Using the strong-motion database developed by Kanno et al. (2006), Morikawa, Kanno et al. ( 2007...
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Journal Article
Journal: Lithosphere
Published: 01 December 2012
Lithosphere (2012) 4 (6): 497–510.
...Soichi Osozawa; Ryuichi Shinjo; Ching-Hua Lo; Bor-ming Jahn; Nguyen Hoang; Minoru Sasaki; Ken’ichi Ishikawa; Harumasa Kano; Hiroyuki Hoshi; Costas Xenophontos; John Wakabayashi Abstract New trace-element, radiogenic isotopic, and geochronologic data from the Troodos ophiolite, considered in concert...
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Series: Geological Society, London, Special Publications
Published: 01 January 2008
DOI: 10.1144/SP.308.16
EISBN: 9781862395565
... on the eastern Prince Olav Coast are exceptional, belonging to the granulite facies as revealed by Hiroi et al. (2006) . At least two major deformation stages are recognized throughout the complex ( Yoshida 1978 ; Ishikawa et al. 1994 ; Motoyoshi & Ishikawa 1997 ; Ikeda & Kawakami 2004...
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Series: GSA Special Papers
Published: 01 January 2006
DOI: 10.1130/2006.2413(05)
... learners in an educational context, we refer the reader to Kastens and Ishikawa (2004) and Ishikawa and Kastens (2005) . For additional insights into spatial thinking across a range of disciplines, we recommend National Research Council (2006) . Kastens originally...
Journal Article
Published: 28 March 2016
Canadian Journal of Earth Sciences (2016) 53 (5): 506–527.
... peri-continental arc). The host rocks of the Boundary deposit contain elevated alteration indices, including high Ba/Sr, Hg/Na 2 O, chlorite–carbonate–pyrite index, and Ishikawa alteration index values. The mobile element geochemistry effectively differentiates between three distinct hydrothermal...
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Journal Article
Journal: Economic Geology
Published: 01 August 2001
Economic Geology (2001) 96 (5): 1133–1148.
...F ig . 8. Plot of Ishikawa alteration index vs. chlorite-carbonate-pyrite (CCP) index for samples from the principal alteration zones (A) and spatially relative to ore (B). Abbreviations as for Table 1 . ...
FIGURES | View All (9)
Journal Article
Journal: Economic Geology
Published: 01 May 2019
Economic Geology (2019) 114 (3): 473–512.
...Fig. 16. Downhole variation of modified alteration index (MAI), Ishikawa alteration index (AI), and chlorite-carbonate-pyrite index (CCPI) values in rocks from A. Gränsgruvan (drill core GGR 137), B. Gränsgruvan (drill core GGR125), and C. Dammberget (drill core SSF26). Drill core logs showing...
FIGURES | View All (24)
Journal Article
Journal: Economic Geology
Published: 01 August 2001
Economic Geology (2001) 96 (5): 1055–1072.
...F ig . 12. Contoured geochemical indexes for section 1700 mN: (a) Ishikawa alteration index; (b) Ba/Sr. Geology key is same as Figure 2 . ...
FIGURES | View All (23)