 | | Journal (article/letter/editorial) | | of Porphyry Cu Deposits of the Western Luzon Arc, Philippines: K-Ar ages, SO3 Contents of Microphenocrystic...the following porphyry Cu deposits in the western Luzon arc are determined: Lobo-Boneng (10.5±0.4 Ma), Santo...associated with porphyry Cu deposits in the western Luzon arc contains sulfur as SO3 detectable by electron...magmatism of the western Luzon arc, from tonalitic rocks of the Luzon Central Cordillera of about 15 Ma...Ma to an active magmatism at Mount Pinatubo. Thus, the western Luzon arc has been generating porphyry |  | | Journal (article/letter/editorial) | | (southwestern Hokkaido through northeastern Honshu to central Honshu), Izu-Bonin arc, Kyushu-Palau ridge, Southwest...were compared to those from the Western Luzon arc, Philippines, to better understand the metallogenesis...associated with porphyry Cu deposits in the Western Luzon arc contain >0.1 wt% S as SO3. Such high SO3 contents...in the Western Luzon arc, from 15 Ma old tonalitic plutonic rocks of the Luzon Central Cordillera to present-day...present-day volcanism at Mount Pinatubo. The accessory apatite in intrusive rocks associated with porphyry |  | | Journal (article/letter/editorial) | | porphyry Cu-Au mineralization at the Dizon mine, Philippines William P. Midea1 | Keiko Hattori1 | Gabriel...Sciences, University of the Philippines Diliman, Quezon City, Philippines Correspondence William P. Midea...geothermobarometry, Fe-Ti oxide geothermobarometry, Luzon arc, magma oxidation, magmatic hydrothermal activity...Au-rich porphyry Cu deposit in the Luzon arc, Philippines. The Luzon arc hosts many young, <10 Ma, porphyry...the water contents. 2 | R EGIONAL G EOLOG Y The Luzon arc formed in response to the eastward subduction |  | Jego, Sebastien, Maury, René C., Polvé, Mireille, Yumul, Graciano P., Bellon, Herve, Tamayo, Rodolfo A., Cotten, Joseph (2005) Geochemistry of Adakites from the Philippines: Constraints on Their Origins. Resource Geology, 55 (3) 163-188 doi:10.1111/j.1751-3928.2005.tb00239.x | Journal (article/letter/editorial) | | 163–187, 2005 Geochemistry of Adakites from the Philippines: Constraints on Their Origins Sebastien JEGO...Sciences, University of the Philippines, Diliman, 1101 Quezon City, Philippines **** Philippine Council for...Development-DOST, Gen. Santos Avenue, Bicutan, 1631 Taguig, Philippines Received on April 1, 2005; accepted on July 12...along the Manila Trench (Batan, Northern Luzon, Central Luzon), the Negros and Sulu Trenches (Negros and...Philippine Trench (Eastern Mindanao). Lavas from Central Mindanao overlie the deep remnants of the Molucca |  | | Journal (article/letter/editorial) | | Oxidized sulfur-rich mafic magma at Mount Pinatubo, Philippines Received: 16 January 2003 / Accepted:...early stages of the 1991 eruption of Mount Pinatubo, Philippines, contain amphiboles that crystallized...releasing sulfur from the melt are not applicable to Pinatubo. Instead, the oxidized state of the dacitic magma...reflects that of parental mafic magma and the source region in the sub-arc mantle. Our results fit a model in...disproportionate sulfur output during the 1991 Mt. Pinatubo eruption suggests that oxidized mafic melt is an |  | Payot, Betchaida, Arai, Shoji, Yoshikawa, Masako, Tamura, Akihiro, Okuno, Mitsuru, Rivera, Danikko (2018) Mantle Evolution from Ocean to Arc: The Record in Spinel Peridotite Xenoliths in Mt. Pinatubo, Philippines. Minerals, 8 (11) 515 doi:10.3390/min8110515 | Journal (article/letter/editorial) | | Record in Spinel Peridotite Xenoliths in Mt. Pinatubo, Philippines Betchaida D. Payot 1, *, Shoji Arai 2 ,...Sciences, University of the Philippines, Diliman, Quezon City 1101, Philippines Department of Earth Sciences...Volcanology and Seismology, Diliman, Quezon City 1101, Philippines; danikkorivera@gmail.com Correspondence: bdpayot@up...flow deposits located close to the summit of Mt. Pinatubo. Spinel harzburgite is the most dominant lithology...mantle wedge. Keywords: xenoliths; Mt. Pinatubo; Philippines; mantle wedge; abyssal lherzolite; arc harzburgite |  | Yoshikawa, Masako, Tamura, Akihiro, Arai, Shoji, Kawamoto, Tatsuhiko, Payot, Betchaida D., Rivera, Danikko John, Bariso, Ericson B., Mirabueno, Ma. Hannah T., Okuno, Mitsuru, Kobayashi, Tetsuo (2016) Aqueous fluids and sedimentary melts as agents for mantle wedge metasomatism, as inferred from peridotite xenoliths at Pinatubo and Iraya volcanoes, Luzon arc, Philippines. Lithos, 262. 355-368 doi:10.1016/j.lithos.2016.07.008 | Journal (article/letter/editorial) | | peridotite xenoliths at Pinatubo and Iraya volcanoes, Luzon arc, Philippines Masako Yoshikawa, Akihiro...peridotite xenoliths at Pinatubo and Iraya volcanoes, Luzon arc, Philippines, LITHOS (2016), doi: 10...R Philippines IP as inferred from peridotite xenoliths at Pinatubo and Iraya volcanoes, Luzon arc...Volcanology and Seismology (PHIVOLCS), Quezon City, Philippines d Faculty of Science, Fukuoka University, Fukuoka...Sciences, University of the Philippines, Diliman, Quezon City 1101, Philippines Christchurch City Council |  | Borisova, Anastassia Yu., Pichavant, Michel, Polvé, Mireille, Wiedenbeck, Michael, Freydier, Remi, Candaudap, Frédéric (2006) Trace element geochemistry of the 1991 Mt. Pinatubo silicic melts, Philippines: Implications for ore-forming potential of adakitic magmatism. Geochimica et Cosmochimica Acta, 70 (14) 3702-3716 doi:10.1016/j.gca.2006.04.030 | Journal (article/letter/editorial) | | element geochemistry of the 1991 Mt. Pinatubo silicic melts, Philippines: Implications for ore-forming potential...form 13 April 2006 Abstract The dacite pumice erupted from Mt. Pinatubo on June 15, 1991 (whole-rock, rhyolitic...minimum of 100 t Au and 5 · 105 t Cu from the Mt. Pinatubo magma. Our data suggest that intrusives having...Cl, Sr/Y, Pb/Ce, Mo/Ce, As/Ce and Sb/Ce in Mt. Pinatubo melts reflect the contribution of deep fluids derived...from subducted sediments and altered MORBs in the dacite genesis. The slab-derived fluids carrying mobile |  | | Journal (article/letter/editorial) | | copper mineralization: evidence from Mount Pinatubo, Philippines, and Bingham Canyon, Utah, USA Received:...2001 Ó Springer-Verlag 2001 Abstract Mount Pinatubo in the Philippines, known for its cataclysmic eruption...caused purging of the sulphur-rich ¯uid from the dacite to the atmosphere and extensive fracturing. Similar...isotope values of 0& for large deposits. Mount Pinatubo is famous for the cataclysmic eruption of June...melt Pinatubo Mount Pinatubo is located in the Bataan arc in western Luzon Island, Philippines (Fig. |  | | Journal (article/letter/editorial) | | Southeast Porphyry Cu-Au Deposit, Mankayan, Philippines Akira IMAI Abstract: The Lepanto Far Southeast...Cu-Au deposit in Mankayan, Benguet Province, Philippines. The principal orebody consists of potassic alteration...heterogeneous entrapping in the two-fluid unmixing region. Sulfur isotopes of aqueous sulfide and sulfate...associated magmatic hydrothermal deposits in the western Luzon arc. The Lepanto Far Southeast (FSE) porphyry Cu-Au...Mineral District, Benguet Province, northern Luzon, Philippines (e.g., Gonzalez, 1956; Garcia, 1991). A set |  | | Journal (article/letter/editorial) | | and one calc-alkaline composition) from the Philippines. The experiments were performed over a fO2 range...and epithermal and porphyry-type deposits is the central question addressed in this paper. We approach the... (2005; see below), all from the North Luzon arc, Philippines (Fig. 1a; bulk rock compositions in Table...Table 1). Recent (<20 Ma) magmatism in the North Luzon arc is linked to the current subduction of the South...rocks selected all come from this recent North Luzon magmatism. They have ages < 3 Ma (Table 1). Diorite |  | Jakubowski, Ryan T., Fournelle, John, Welch, Sue, Swope, R. J., Camus, Patrick (2002) Evidence for magmatic vapor deposition of anhydrite prior to the 1991 climactic eruption of Mount Pinatubo, Philippines. American Mineralogist, 87 (8) 1029-1045 doi:10.2138/am-2002-8-901 | Journal (article/letter/editorial) | | prior to the 1991 climactic eruption of Mount Pinatubo, Philippines RYAN T. JAKUBOWSKI,1,* JOHN FOURNELLE...ABSTRACT Anhydrite (CaSO4) phenocrysts from Mount Pinatubo pumices show evidence of having responded dynamically...the magma at depth. At least a portion of the Pinatubo anhydrite phenocrysts provided substrates for...such as Nevado del Ruiz (Fournelle 1990) and Mount Pinatubo. It has been predicted experimentally that...Dorais 2000). Phenocrystic anhydrite in andesite or dacite pumices is rarely observed owing to rapid sub-aerial |  | Gregoire, M., Jego, S., Maury, R.C., Polve, M., Payot, B., Tamayo, R.A., Yumul, G.P. (2008) Metasomatic interactions between slab-derived melts and depleted mantle: Insights from xenoliths within Monglo adakite (Luzon arc, Philippines) Lithos, 103 (3) 415-430 doi:10.1016/j.lithos.2007.10.013 | Journal (article/letter/editorial) | | Insights from xenoliths within Monglo adakite (Luzon arc, Philippines) M. Gregoire a,⁎, S. Jego b , R.C. Maury...Sciences, University of the Philippines, Diliman, 1101 Quezon City, Philippines f Philippine Council for...Development-DOST, Gen. Santos Avenue, Bicutan, 1631 Taguig, Philippines Received 21 June 2007; accepted 24 October 2007...supra-subduction zone ophiolitic complex located within the Luzon arc crust. Spinel-bearing dunites are dominant among...All rights reserved. Keywords: Mantle xenoliths; Luzon arc; Metasomatism; Dunite; Trace elements; Adakite |  | | Journal (article/letter/editorial) | | Porphyry and Lepanto Epithermal Cu–Au Deposits, Philippines Jeffrey W. HEDENQUIST,1,2 Antonio ARRIBAS R.1...world-class Far Southeast (FSE) porphyry system, Philippines, includes the FSE Cu–Au porphyry deposit, the...the Mankayan mineral district of northern Luzon, Philippines (Hedenquist et al., 1998). The Lepanto high-sulfidation...Bato pyroclastic units and related intrusions of dacite to andesite composition. Much of the porphyry deposit...is hosted by an intrusive complex of diorite and dacite intrusions, and was cut locally by phreatomagmatic |  | | Journal (article/letter/editorial) | | Eruption of Mount Pinatubo. I. Phase Equilibria and Pre-eruption P–T–f O2–f H2O Conditions of the Dacite Magma...of the crystal-rich dacite ejected during the 15 June 1991 eruption of Mt Pinatubo, to define the pre-eruption...(including the same melt H2O content) as the erupted dacite to preserve the linear relationship observed between...must have occurred when the dacite was already oxidized. KEY WORDS: Pinatubo; sulfur; arc-magmas; f O2;...Mt) ejected in the 15 June 1991 eruption of Mount Pinatubo and the ensuing climatic effects (Bluth et |  | Reich, Martin, Parada, Miguel A., Palacios, Carlos, Dietrich, Andreas, Schultz, Frank, Lehmann, Bernd (2003) Adakite-like signature of Late Miocene intrusions at the Los Pelambres giant porphyry copper deposit in the Andes of central Chile: metallogenic implications. Mineralium Deposita, 38 (7) 876-885 doi:10.1007/s00126-003-0369-9 | Journal (article/letter/editorial) | | giant porphyry copper deposit in the Andes of central Chile: metallogenic implications Received: 12 November...the Los Pelambres giant porphyry copper deposit, central Chile (32S). Located within the southern portion...Keywords Adakites Æ Giant porphyry copper deposits Æ Central Andes Introduction The genetic link between magmatism...crust (Cathles 1981; Sawkins 1990). The Andes of central Chile host some of the world’s largest porphyry...black line), and the volcanic gap separating the Central Volcanic Zone (CVZ) and the Southern Volcanic Zone |  | | Report (chapter) | | a function of the pressure in the magma storage region, the physical properties of the magma, such as...volcanoes there is good evidence for a magma storage region in the crust, a magma reservoir from which the... including Mount St. Helens (Scandone and Malone 1985), Mount Pinatubo in the Philippines (Pallister...such reservoirs did exist at 3-5 and >8 km under Mount Rainier at the time of its most recent (2,200 years...seismic evidence generally indicates a magma storage region in the crust or near the crustmantle boundary. |  | Oyarzun, Roberto, Márquez, Alvaro, Lillo, Javier, López, Ivan, Rivera, Sergio (2002) Reply to Discussion on "Giant versus small porphyry copper deposits of Cenozoic age in northern Chile: adakitic versus normal calc-alkaline magmatism" by Oyarzun R, Márquez A, Lillo J, López I, Rivera S (Mineralium Deposita 36:794–798, 2001) Mineralium Deposita, 37 (8) 795-799 doi:10.1007/s00126-002-0286-3 | Journal (article/letter/editorial) | | Lomas Bayas; LE La Escondida; SG Sierra Gorda. Mount Pinatubo: average 1991 pumice (after Bernard et al.... the Andean chain should be wider in southern central Chile, and obviously this is not the case. Magma... and the Ollague and Pinatubo volcanoes. (i) Initial Ollague Volcano Pinatubo Volcanoa Chuquicamatab...know that the major thickening process in the Central Andes took place during the Late Cenozoic, i.e...geochemical data from 15 andesite–dacite stratovolcanoes from central Chile, which suggest melting, assimilation |  | | Journal (article/letter/editorial) | | understanding volatile enrichment mechanisms is central to understanding the driving forces of explosive...by the eruptions of El Chichón in 1982 and Mount Pinatubo in 1991. In both of these events, gases and...(Williams et al. 1990), or Mount Pinatubo (Westrich and Gerlach 1992). Mount Pinatubo injected an estimated...systems such as El Chichón, Nevado del Ruiz, and Mount Pinatubo. GEOLOGY OF GRANITIC ROCKS IN THE CAJON PASS...Scientific Drillhole (Federal 2-26) was drilled in the central Transverse Ranges of southern California. The Transverse |  | | Journal (article/letter/editorial) | | by Jones et al. (1967). Igneous activity in the region began in the Late Cretaceous with the intrusion...intergrowths similar to those described from Mt. Pinatubo (Baker and Rutherford, 1996; Pallister et al....laboratory experiment of anhydrite-saturated Pinatubo dacite at 760 jC, 2200 bar, and MNO-buffered oxygen...‘‘SR8’’-similar experimental run products of Mt. Pinatubo dacite with the assemblage hornblende + magnetite...comparison, the sulfur-rich magmas erupted from Mt. Pinatubo and El Chichón contained 1000– 4000 and 5000 |  | Mungall, J. E., Brenan, J. M., Godel, B., Barnes, S. J., Gaillard, F. (2015) Transport of metals and sulphur in magmas by flotation of sulphide melt on vapour bubbles. Nature Geoscience, 8 (3) 216-219 doi:10.1038/ngeo2373 | Journal (article/letter/editorial) | | co-erupted excess sulphur vapour at Soufriere and Pinatubo volcanoes was probably supplied previously by...Hydrothermal porphyry deposits of Cu and/or Au at Pinatubo as well as Bingham Canyon, Utah19 and Bajo de...vapour is able to leave the system. The mineralized dacite porphyry stocks at Alumbrera were derived from...magmas at Pinatubo, Bingham Canyon, Merapi, Popocatepetl, Satsumi-Iōjima, Clear Lake and Mount St Helens4...SO2 cloud from the June 15, 1991, eruption of Mount Pinatubo. Geology 20, 867–870 (1992). 4 13. Gerlach |  | de Ignacio, Cristina, Castiñeiras, Pedro, Márquez, Álvaro, Oyarzun, Roberto, Lillo, Javier, López, Iván (2003) El Chichón Volcano (Chiapas Volcanic Belt, Mexico) Transitional Calc-Alkaline to Adakitic-Like Magmatism: Petrologic and Tectonic Implications. International Geology Review, 45 (11) 1020-1028 doi:10.2747/0020-6814.45.11.1020 | Journal (article/letter/editorial) | | much resembling adakitic magmas (e.g., the 1991 Pinatubo eruption). We propose that these rocks were generated... 1987; Fig. 1A). In contrast with the typical Central America volcanic arc, the Chiapas volcanic belt...0020-6814/03/700/1020-9 $25.00 canic belt from the westernmost Central American volcanoes and from the Mexican volcanic...the atmosphere (compared with 20 Mt of SO2 by Mount Pinatubo in 1991; Pasteris, 1996). Another remarkable...setting of volcanic belts in southern Mexico and Central America. See location of the Chiapas volcanic belt |  | | Journal (article/letter/editorial) | | the Dizon Porphyry Cu-Au Deposit, Zambales, Philippines Akira IMAI* Department of Earth and Planetary...porphyry Cu-Au deposit in western central Luzon, Zambales, Philippines, is documented in terms of mineral...system. Keywords: Dizon, porphyry Cu deposit, Philippines, Luzon, fluid inclusion, hydrothermal system, sulfur...Au-rich porphyry Cu deposits in the western Luzon arc, Philippines (Bureau of Mines and Geosciences (BMG)...western flank of the Philippine Central Cordillera in northern Luzon, the Dizon deposit (Malihan, 1982 |  | | Journal (article/letter/editorial) | | km3 of dacitic tephra at Pinatubo Volcano on the Philippine island of Luzon ( Scott et al., 1996; Wolff...Wolff and Hoblitt, 1996). Based on TOMS data, the Pinatubo SO2 cloud was estimated at 14 to 26 Mt (Krueger...temperature of 800 to 850°C. In the case of the 1991 Pinatubo dacites, conventional sulfur isotopic measurements...anhydrite and chalcopyrite crystals from the 1991 Pinatubo eruption by ion microprobe. For the andesitic...Mexican Volcanic Belt, the northwestern end of the Central American Volcanic Belt, and principal plate-tectonic |  | | Journal (article/letter/editorial) | | with calc-alkaline compositions (from basalt to dacite; Fig. 1). Crystallization experiments assure the...Olv Cpx Opx Oxides Bi 1 Aoso Japan Basalt-dacite 7–33 B5 B1 B10 B4 tr-2 2 Batur Indonesia...5–10 2–3 B5 4 Cerro Negro Ecuador Basalt-dacite 8–28 B7 B7 B12 B4 tr-3 B5 5 Colima Mexico...andesite-andesite 5–30 3–8 7 El Reventador Ecuador Basalt-dacite 5–20 tr-4 B1 5 1–6 tr-2 2–4 1–2 B2 8 ...andesite-rhyolite 5–40 B20 B5 B25 tr Iriga Philippines Basalt-andesite 7–23 B5 B10 1–9 Btr B2 |
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