 | | 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 |  | 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 |  | | 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 |  | 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 |  | | Journal (article/letter/editorial) | | from volcanic and ultramafic regions on Luzon Island, the Philippines H.H. Schopka a,⇑, L.A. Derry a, C.A...Sciences, University of the Philippines, Diliman, Quezon City 1101, Philippines Received 7 April 2010; accepted...volcanic and ophiolitic rocks on Luzon Island, the Philippines. Luzon has a tropical climate and is volcanically...weathering and atmospheric carbon fluxes from Luzon, the Philippines the variables that have been investigated...tropical regions of Oceania and Central America should be high. The Philippines (Fig. 1a and b) is an ideal |  | | 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...basal basaltic Lepanto volcanic unit; the Bagon gabbro–diorite–tonalitic batholith; the epiclastic Balili...unit (Dunkley, 2015). The Bagon tonalite–diorite–gabbro complex, located to the west, intruded the Lepanto |  | | Journal (article/letter/editorial) | | S as SO2− (Fig. 2). For example, Mount Pinatubo in the 4 Philippines is well known for its anhydrite phenocrysts...its flank (Hattori & Keith, 2001). Magmas for the Pinatubo eruption products had high fO2, above FMQ + 2...geothermobarometry by Zhang and Audétat (2017); Pinatubo from Hattori (1993), Scaillet and Evans (1999)...submarine volcanic rocks, forming the Green Tuff region of propylitic alteration from Hokkaido to Kyushu...associated Lepanto high sulfidation Au deposit in Philippines, were formed at approximately 1.4 Ma (Arribas |  | Cao, MingJian, Hollings, Pete, Cooke, David R., Evans, Noreen J., McInnes, Brent I.A., Qin, KeZhang, Li, GuangMing, Sweet, Gabe, Baker, Mike (2018) Physicochemical Processes in the Magma Chamber under the Black Mountain Porphyry Cu-Au Deposit, Philippines: Insights from Mineral Chemistry and Implications for Mineralization. Economic Geology, 113 (1) 63-82 doi:10.5382/econgeo.2018.4544 | Journal (article/letter/editorial) | | under the Black Mountain Porphyry Cu-Au Deposit, Philippines: Insights from Mineral Chemistry and Implications...deposit in the Baguio district, Northern Luzon (Philippines) is associated with late Miocene to Pliocene...Introduction The Baguio district of Northern Luzon, Philippines (Fig. 1A) is considered one of the world’s...Yonsei University user 64 CAO ET AL. 18O 120O Luzon 123O Fig.B Manila 126O A 120O32' 120O34'...granodiorite Pliocene & Pleistocene intrusions Central Cordillera diorite complex Mafic Dike complex |  | | Journal (article/letter/editorial) | | enclosing anhydrous phases) and euhedral (cognate) gabbro crystals. Pristine and homogeneous amphiboles of...andesite-rhyolite 5–40 B20 B5 B25 tr Iriga Philippines Basalt-andesite 7–23 B5 B10 1–9 Btr B2...1–5 B1 11 12 Lassen Mt. Bulusan California Philippines Andesite-dacite Basaltic andesite-rhyolite ...Basalt tr-24 B4 B12 B8 B3 B1 20 Pinatubo Philippines Basalt-dacite 13–29 9–35 B6 B19 21...or equal to plagioclase are rare, Table 1) and gabbro cumulates (e.g. Fichaut et al. 1989a; Swanson et |  | Cooke, D. R., Deyell, C. L., Waters, P. J., Gonzales, R. I., Zaw, K. (2011) Evidence for Magmatic-Hydrothermal Fluids and Ore-Forming Processes in Epithermal and Porphyry Deposits of the Baguio District, Philippines. Economic Geology, 106 (8) 1399-1424 doi:10.2113/econgeo.106.8.1399 | Journal (article/letter/editorial) | | and Porphyry Deposits of the Baguio District, Philippines DAVID R. COOKE,1,† CARI L. DEYELL,1,* PATRICK...7001, Australia 2 Anglo American Exploration Philippines Inc., 1101 Pearlbank Centre Building, 146 Valero...Salcedo Village, Makati City, Metro Manila, Philippines Abstract The Baguio district contains a diverse...plate and the Scarborough Ridge beneath northern Luzon over the past 3 m.y. Rapid uplift and exhumation...sulfidation epithermal veins of the southern and central Baguio district are mostly between +1 and +6 per |  | | 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. |  | RodrÍguez, Carolina, Sellés, Daniel, Dungan, Michael, Langmuir, Charles, Leeman, William (2007) Adakitic Dacites Formed by Intracrustal Crystal Fractionation of Water-rich Parent Magmas at Nevado de Longaví Volcano (36·2°S; Andean Southern Volcanic Zone, Central Chile) Journal of Petrology, 48 (11) 2033-2061 doi:10.1093/petrology/egm049 | Journal (article/letter/editorial) | | Volcano (3628S; Andean SouthernVolcanic Zone, Central Chile) UNIVERSITE¤ DE GENE'VE, DE¤PARTEMENT DE...chemically distinct from other evolved magmas of the region in that they have high La/Yb (15^20) and Sr/Y (60^90)...plate margins originates in the high-temperature region of the asthenospheric mantle wedge as a consequence...position of the SVZ relative to the Northern, Central, and Austral Volcanic zones (NVZ, CVZ, and AVZ...primarily of thick andesitic flows that radiate from a central vent. Basalts and basaltic andesites predominate |  | Wu, Chu, Hong, Tao, Xu, Xing-Wang, Cao, Ming-Jian, Li, Hao, Ke, Qiang, Li, Hang, Dong, Lian-Hui (2019) Constraints on the formation of the Baogutu reduced porphyry copper deposit (West Junggar, NW China): Assessing the role of mafic magmas in mineralization. Lithos, 336. 112-124 doi:10.1016/j.lithos.2019.03.034 | Journal (article/letter/editorial) | | felsic shallow intrusions. A newly discovered gabbro, which contains 1182-1260 ppm Cu, PT provides...and isotopic characteristics of the Cu-bearing gabbro and granitoids in the Baogutu RPCD has been completed...spectrometry (LA-ICP-MS) U-Pb dating of zircons from a gabbro, MA diorite and porphyritic diorite are 318.2...geochemical and isotopic characteristics of the gabbro, PT E diorite, and porphyritic diorite at Baogutu...variations of major and trace elements suggest that the gabbro and diorite in the Baogutu RPCD were all derived |  | | Report (chapter) | | mineralization in the Karacaali Magmatic Complex, central Anatolia, Turkey OKAN DELIBAŞ1*, YURDAL GENÇ1...calc-alkaline Karacaali Magmatic Complex (KMC), in the Central Anatolian Crystalline Complex, is an example of...rhyolite, whilst coeval plutonic rocks range from gabbro to leucogranite. In this paper we document evidence...available at http://www.geolsoc.org.uk/SUP18434. The Central Anatolian Crystalline Complex (CACC) (Göncüoğlu...et al. 2001; İlbeyli et al. 2004) situated in central Turkey, east of Ankara (Fig. 1). This crustal segment |  | | Journal (article/letter/editorial) | | active arcs (Avacha of Kamchatka arc and Iraya of Luzon–Taiwan arc) to fertile spinel lherzolite of highpressure...replacement by the continental lherzolite at the region of backarc to continental margin. Asthenospheric...Asthenospheric upwelling beneath the continental region, which has frequently occurred at the Western Pacific, has...Continental margin 1. Introduction The Western Pacific region has been one of the most mobile zones, having had...Takahashi, 1978a; Aoki, 1987). The Western Pacific region is especially noteworthy to provide peridotite |  | | Journal (article/letter/editorial) | | proportionally longer to cool. Except for a thermal boundary region on the order of 1 m thick, silicic magmas only...thickness of silicic magma. These timescales are central to the role of magma commingling in explosive eruption...that of the magma believed to have entered the Pinatubo magma chamber in 1991 (the averaged composition...for the Pinatubo basaltic magma, the choice of intensive parameters is that of the Pinatubo chamber [35]...trend. I have considered two silicic magmas: the Pinatubo dacite (the averaged phenocryst-rich dacite of |  | | Journal (article/letter/editorial) | | , 2009). The Caraja¤s province is part of the Central Amazonian province (Tassinari & Macambira, 2004)...four localities with a portable drill core. The central parts of the cores exhibit no apparent interaction...1998). As an example, the experimental work on the Pinatubo dacite discussed below comes from a study of a...area) Synthetic granodiorite Alpine 1 Adamello Pinatubo, 1991 3 Lyngdal Layered granodiorite 4 rocks...samples selected for experimental studies of the Pinatubo dacite (Scaillet & Evans, 1999; Prouteau & Scaillet |  | Wang, Qiang, Zhao, Zhen-Hua, Bao, Zhi-Wei, Xu, Ji-Feng, Liu, Wei, Li, Chao-Feng, Bai, Zheng-Hua, Xiong, Xiao-Lin (2004) Geochemistry and Petrogenesis of the Tongshankou and Yinzu Adakitic Intrusive Rocks and the Associated Porphyry Copper-Molybdenum Mineralization in Southeast Hubei, East China. Resource Geology, 54 (2) 137-152 doi:10.1111/j.1751-3928.2004.tb00195.x | Journal (article/letter/editorial) | | porphyry Cu-Mo types have been reported in the region, most of which are related to Jurassic-Cretaceous...Yinzu pluton are plotted in the granodiorite and gabbro-diorite fields. In the Harker diagrams (Fig. 3)...01YZ-2 01YZ-4 01YZ-4-1 Rocks granodiorite porphyry Gabbro-diorite SiO2 64.20 64.28 63.28 63.68 64.53 64.10...and geochemistry of Camiguin island, southern Philippines: Insights to the source of adakites and other...662–665. Defant, M. J. and Drummond, M. S. (1993) Mount St. Helens: Potential example of the partial melting |  | | Journal (article/letter/editorial) | | investigated: (1) MSH–Yn−1 dacite (SiO2: 65 wt%) from Mount St. Helens’ voluminous Yn tephra and (2) MSH–Yn−1...indicate near-liquidus equilibrium with a cpx-free hbl-gabbro residue (hbl, plg, magnetite, ± opx, and ilmeno-hematite)...abundance. Communicated by Timothy L. Grove. Keywords Mount St. Helens · Dacite · Inverse experiments · Amphibole...large central volcanoes of the Cascades magmatic arc, USA (Hildreth 2007), particularly at Mount St. Helens...dacite (Hildreth 2007). The eruptive history of Mount St. Helens goes back ~300 ka, with smallvolume eruptions |  | Ripley, Edward M., Li, Chusi, Moore, Craig H., Schmitt, Axel K. (2010) Micro-scale S isotope studies of the Kharaelakh intrusion, Noril’sk region, Siberia: Constraints on the genesis of coexisting anhydrite and sulfide minerals. Geochimica et Cosmochimica Acta, 74 (2) 634-644 doi:10.1016/j.gca.2009.10.003 | Journal (article/letter/editorial) | | isotope studies of the Kharaelakh intrusion, Noril’sk region, Siberia: Constraints on the genesis of coexisting...sulfide-rich Ni–Cu–(PGE) deposits in the Noril’sk region 635 (Fig. 1). A detailed description of the rock...Fig. 1. (a) Simplified geologic map of the Talnakh region showing projected surface locations of underground...4700 . and K53 are taxitic (variable–textured) gabbro and samples K58, KH-1 and KH-2 are picritic (olivine)...variations in the average IMF were <1&. On a second mount, we then analyzed grains of chalcopyrite (Noril’sk; |  | | Journal (article/letter/editorial) | | plagioclase from andesitic magma in the source region of porphyry intrusions at 250 MPa, 950 C and water...(Fig. 2). Volcanic units dip away from a large central stock (Alto de la Blenda) such that the present...is apparent in the volcanic stratigraphy. The central Alto de la Blenda stock is considered as the principal...as intrusions were emplaced randomly around the central Alto de la Blenda stock but rather suggests that...found in samples from volcanic rocks and in the central Alto de la Blenda stock (sample ML9). Pyroxene |  | Wright, Heather Michelle, Bacon, Charles R., Vazquez, Jorge A., Sisson, Thomas W. (2012) Sixty thousand years of magmatic volatile history before the caldera-forming eruption of Mount Mazama, Crater Lake, Oregon. Contributions to Mineralogy and Petrology, 164 (6) 1027-1052 doi:10.1007/s00410-012-0787-8 | Journal (article/letter/editorial) | | history before the caldera-forming eruption of Mount Mazama, Crater Lake, Oregon Heather Michelle Wright...the developing shallow magma storage and conduit region. Dissolved H2O concentrations form two populations...and solubility models indicate a dominant storage region at 4–7 km (up to 12 km), with drier inclusions...result from a broadening of the shallow storage region to greater than the diameter of subjacent feeders...inclusions provide a picture of a growing magma storage region, where chemical variations in melt and magma occur |  | | Book | | xvii Timeline of Disasters in the Pacific Rim Region in the Modern Era xxi 1 The Encyclopedia Bibliography...vii viii | List of Entries Hess, Harry Hood, Mount, Oregon, United States Hot Spot Hualalai, Hawaii...“Krakatoa” Eruption), Indonesia (1883) Lahar Lamington, Mount, Eruption, Papua New Guinea (1951) Lassen Peak,...Philippine Plate Philippines Phreatic Eruption Pinatubo, Mount, Eruption, Philippines (1991) Pisco Earthquake...Pyroclastic Materials Rabaul, Papua New Guinea Ranier, Mount, Washington, United States List of Entries Redoubt |  | Shen, Ping, Hattori, Keiko, Pan, Hongdi, Jackson, Simon, Seitmuratova, Eleonora (2015) Oxidation Condition and Metal Fertility of Granitic Magmas: Zircon Trace-Element Data from Porphyry Cu Deposits in the Central Asian Orogenic Belt. Economic Geology, 110 (7) 1861-1878 doi:10.2113/econgeo.110.7.1861 | Journal (article/letter/editorial) | | Trace-Element Data from Porphyry Cu Deposits in the Central Asian Orogenic Belt Ping Shen,1,* Keiko Hattori...Sciences, Almaty 050010, Kazakhstan Abstract The Central Asian Orogenic Belt (CAOB) hosts a number of porphyry...Zhejiang districts (Qiu et al., 2013) in China. The Central Asian Orogenic Belt (CAOB) has a number of porphyry...deposit is situated in the northwestern part of central Kazakhstan (Fig. 1) with contained metal of 4.1...Pacific margin assemblage Pre-Baikalides Margin of Central Asian Orogenic Belt Tethysides Craton or micro-continent |  | | Journal (article/letter/editorial) | | along sinistral strike–slip fault systems in the central to southwestern part of the Korean Peninsula (Figure...along sinistral strike– slip fault systems in the central to southwestern part of the Korean Peninsula (Figure...chips of of the the FC1 FC1 (Duluth (Duluth gabbro gabbro of of 1099 1099 Ma Ma [36]) [36]) and and SL13...successions in the Wido, Buan, and Haenam areas of the central to southwestern part of the Korean Peninsula are...Disturbance and Lahars on the East Side of Mount Pinatubo During the Mid-June 1991 Eruptions. In Fire |
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