 | | Journal (article/letter/editorial) | | isotope evidence for the formation of silicic Kermadec island arc and HavreâLau backarc magmas by fractional...material. Andesitic to rhyolitic samples from two Kermadec island arc volcanoes and basalts to dacites from...2009). Similarly, many volcanoes in the TongaâKermadec island arc erupt dacitic to rhyolitic lavas that...have very different ÎŽ 18O values. Here we provide new O isotope and Cl concentration data on a set of volcanic...volcanic glasses from different volcanoes in the Kermadec island arc and LauâHavre backarc basin. We show |  | Caratori Tontini, F., Davy, B., De Ronde, C. E. J., Embley, R. W., Leybourne, M., Tivey, M. A. (2012) Crustal Magnetization of Brothers Volcano, New Zealand, Measured by Autonomous Underwater Vehicles: Geophysical Expression of a Submarine Hydrothermal System. Economic Geology, 107 (8) 1571-1581 doi:10.2113/econgeo.107.8.1571 | Journal (article/letter/editorial) | | 1571â1581 Crustal Magnetization of Brothers Volcano, New Zealand, Measured by Autonomous Underwater Vehicles:... Science, P.O. Box 30-368, Lower Hutt 5040, New Zealand Marine Environmental Laboratory, National Oceanic...autonomous underwater vehicles at Brothers volcano, southern Kermadec arc, New Zealand. Crustal magnetization for...of hydrothermal activity at Brothers volcano (Fig. 1). Brothers volcano is one of many volcanoes that...that make up the active arc front of the Kermadec intraoceanic arc and is host to a large hydrothermal system |  | Keith, Manuel, Haase, Karsten M., Klemd, Reiner, Smith, Daniel J., Schwarz-Schampera, Ulrich, Bach, Wolfgang (2018) Constraints on the source of Cu in a submarine magmatic-hydrothermal system, Brothers volcano, Kermadec island arc. Contributions to Mineralogy and Petrology, 173 (5) doi:10.1007/s00410-018-1470-5 | Journal (article/letter/editorial) | | submarine magmatichydrothermal system, Brothers volcano, Kermadec island arc Manuel Keith1 · Karsten M...continental or oceanic arc magmas are barren, and hence new methods have to be developed to distinguish between...an economically valuable deposit. Brothers volcano in the Kermadec island arc is one of the best-studied...chemical and mineralogical composition of the Brothers seafloor massive sulphides and the associated...from LâEsperance volcano may represent a parental analogue to the more evolved Brothers lavas. Copper-rich |  | Timm, C., de Ronde, C. E. J., Leybourne, M. I., Layton-Matthews, D., Graham, I. J. (2012) Sources of Chalcophile and Siderophile Elements in Kermadec Arc Lavas. Economic Geology, 107 (8) 1527-1538 doi:10.2113/econgeo.107.8.1527 | Journal (article/letter/editorial) | | Sources of Chalcophile and Siderophile Elements in Kermadec Arc Lavas* CHRISTIAN TIMM,1,â CORNEL E. J. DE...GNS Science, PO Box 30-368, Lower Hutt 5040, New Zealand of Geological Sciences and Geological Engineering...associated (host) magmatic rocks. Here, we combine new and published trace element data for lavas recovered...recovered from 15 volcanic centers along the Kermadec arc. The data show that mafic back-arc and arc-front... Sb, and Pb)/(MREE, HREE) in basalts from the Kermadec back arc (Havre Trough) when compared to the arc |  | Gruen, G., Weis, P., Driesner, T., de Ronde, C. E. J., Heinrich, C. A. (2012) Fluid-Flow Patterns at Brothers Volcano, Southern Kermadec Arc: Insights from Geologically Constrained Numerical Simulations. Economic Geology, 107 (8) 1595-1611 doi:10.2113/econgeo.107.8.1595 | Journal (article/letter/editorial) | | 1595â1611 Fluid-Flow Patterns at Brothers Volcano, Southern Kermadec Arc: Insights from Geologically Constrained... Science, P.O. Box 31-312, Lower Hutt 5010, New Zealand Abstract Numerical, multiphase pure-water simulations...hydrothermal venting at Brothers volcano, southern Kermadec arc, New Zealand. By comparing the results...mineral pairs from different vent sites at Brothers volcano. Direct measurements of vent fluids at the...hydrothermal evolution and fluid-flow patterns at Brothers volcano are controlled by episodes of varying magmatic |  | | Report (chapter) | | Felsic volcanism in the Kermadec arc, SW Pacific: crustal recycling in an oceanic setting I A N E . M...University of Auckland, PB 92019, Auckland, New Zealand (e-mail ie.smith@auckland.ac.nz) 2present address:...North, New Zealand 4School of Science and Technology, University ofWaikato, PB 3105, Hamilton, New Zealand...dacites and rhyolites relatively uncommon. The Kermadec arc is an intraoceanic convergent system in the...is widespread. In the Kermadec Islands, Macauley Volcano is a basaltic volcano that produced a large |  | Leybourne, M. I., Schwarz-Schampera, U., de Ronde, C. E. J., Baker, E. T., Faure, K., Walker, S. L., Butterfield, D. A., Resing, J. A., Lupton, J. E., Hannington, M. D., Gibson, H. L., Massoth, G. J., Embley, R. W., Chadwick, W. W., Clark, M. R., Timm, C., Graham, I. J., Wright, I. C. (2012) Submarine Magmatic-Hydrothermal Systems at the Monowai Volcanic Center, Kermadec Arc. Economic Geology, 107 (8) 1669-1694 doi:10.2113/econgeo.107.8.1669 | Journal (article/letter/editorial) | | Magmatic-Hydrothermal Systems at the Monowai Volcanic Center, Kermadec Arc MATTHEW I. LEYBOURNE,1,â ,* ULRICH SCHWARZ-SCHAMPERA...Pacific Science, P.O. Box 30-368, Lower Hutt, New Zealand of Earth Sciences, University of Ottawa, Ottawa...Atmospheric Research, Greta Point, Wellington 6241, New Zealand 11 National Oceanography Centre, Southampton...at the midpoint along the ~2,530-km-long Tonga-Kermadec arc system. The Monowai volcanic center is comprised...this nested caldera system is a large composite volcano, Monowai cone, which rises to within ~100 m of |  | Wang, Zaicong, Park, Jung-Woo, Wang, Xia, Zou, Zongqi, Kim, Jonguk, Zhang, Pingyang, Li, Ming (2019) Evolution of copper isotopes in arc systems: Insights from lavas and molten sulfur in Niuatahi volcano, Tonga rear arc. Geochimica et Cosmochimica Acta, 250. 18-33 doi:10.1016/j.gca.2019.01.040 | Journal (article/letter/editorial) | | Insights from lavas and molten sulfur in Niuatahi volcano, Tonga rear arc Zaicong Wang, Jung-Woo Park, Xia...Insights from lavas and molten sulfur in Niuatahi volcano, Tonga rear arc, Geochimica et Cosmochimica Acta...Insights from lavas and molten sulfur in Niuatahi volcano, Tonga rear arc Zaicong Wanga*, Jung-Woo Parkb...basalts, dacites and molten sulfur in Niuatahi volcano, Tonga rear arc to address the issue. These samples...Niuatahi magma became sulfide saturated after magnetite crystallization during magma differentiation from |  | Berkenbosch, H. A., de Ronde, C. E. J., Paul, B. T., Gemmell, J. B. (2015) Characteristics of Cu isotopes from chalcopyrite-rich black smoker chimneys at Brothers volcano, Kermadec arc, and Niuatahi volcano, Lau basin. Mineralium Deposita, 50 (7) 811-824 doi:10.1007/s00126-014-0571-y | Journal (article/letter/editorial) | | black smoker chimneys at Brothers volcano, Kermadec arc, and Niuatahi volcano, Lau basin H. A. Berkenbosch...chimneys collected from Brothers volcano, Kermadec arc, and Niuatahi volcano, Lau backarc basin. This...Science, 1 Fairway Drive, Avalon, Lower Hutt 5010, New Zealand B. T. Paul School of Earth Sciences, University...for periodic release of magmatic volatiles at Brothers, we believe vapour transport of Cu is responsible...sulphide deposits . Intraoceanic arc . Brothers volcano . Niuatahi volcano Introduction Research on copper |  | Yeats, C. J., Parr, J. M., Binns, R. A., Gemmell, J. B., Scott, S. D. (2014) The SuSu Knolls Hydrothermal Field, Eastern Manus Basin, Papua New Guinea: An Active Submarine High-Sulfidation Copper-Gold System. Economic Geology, 109 (8) 2207-2226 doi:10.2113/econgeo.109.8.2207 | Journal (article/letter/editorial) | | Knolls Hydrothermal Field, Eastern Manus Basin, Papua New Guinea: An Active Submarine High-Sulfidation Copper-Gold...Resource Engineering, P.O. Box 136, North Ryde, New South Wales, Australia 1670 3 Research 4 ARC 5 Marine...opening backarc basin in the Bismarck Sea, Papua New Guinea (PNG; Fig. 1). Significant hydrothermal activity...the eastern Manus basin by the PACMANUS I (Papua New Guinea Australia Canada Manus basin) expedition with...overrides the Australian plate to the south at the New Britain trench. and Scott, 1993). The site, also |  | de Ronde, C. E. J., Walker, S. L., Ditchburn, R. G., Tontini, F. C., Hannington, M. D., Merle, S. G., Timm, C., Handler, M. R., Wysoczanski, R. J., Dekov, V. M., Kamenov, G. D., Baker, E. T., Embley, R. W., Lupton, J. E., Stoffers, P. (2014) The Anatomy of a Buried Submarine Hydrothermal System, Clark Volcano, Kermadec Arc, New Zealand. Economic Geology, 109 (8) 2261-2292 doi:10.2113/econgeo.109.8.2261 | Journal (article/letter/editorial) | | Submarine Hydrothermal System, Clark Volcano, Kermadec Arc, New Zealand C.E.J. de Ronde,1,â S.L. Walker,2...Drive, Avalon, PO Box 30-368, Lower Hutt 6315, New Zealand Marine Environmental Laboratory, National Oceanic...Victoria University of Wellington, Wellington 6012, New Zealand 6 National Institute of Water and Atmospheric...Atmospheric Research, PO Box 14-901, Wellington, New Zealand 7 IFREMER, Centre de Brest, Department of Marine Geosciences...Pacific Abstract Clark volcano of the Kermadec arc, northeast of New Zealand, is a large stratovolcano |  | Caratori Tontini, F., Bortoluzzi, G., Carmisciano, C., Cocchi, L., de Ronde, C. E. J., Ligi, M., Muccini, F. (2014) Near-Bottom Magnetic Signatures of Submarine Hydrothermal Systems at Marsili and Palinuro Volcanoes, Southern Tyrrhenian Sea, Italy. Economic Geology, 109 (8) 2119-2128 doi:10.2113/econgeo.109.8.2119 | Journal (article/letter/editorial) | | 1 GNS Science, P.O. Box 30368, Lower Hutt, New Zealand 2 CNR, 3 INGV, Ismar, via Gobetti, 101, 40129...hydrothermal activity and altered host rocks. At Marsili volcano, a large elliptical area of reduced magnetization...cone and perpendicular to the trend of Marsili volcano itself. This confirms the presence of a large hydrothermal...dissolve and/or replace magnetic minerals, such as magnetite and titanomagnetite, with less magnetic and nonmagnetic...low-temperature (60°C) hydrothermal discharge at Palinuro volcano. The first systematic survey aimed at finding evidence |  | | Journal (article/letter/editorial) | | amount in modern arcs, they are olivine-rich, not magnetite-rich, and that numerical, petrological and field...field evidence indicates that the high oxidation/magnetite subtraction hypothesis of orogenic andesite genesis...Less abundant and sporadic as phenocrysts are magnetite (particularly in some basaltic andesites), biotite...Bougainville Island, a component of the Solomon Islands volcanic arc (open squares, lavas with SiO2 > 52...(Sinton et al. 2003), a component of the nearby New Britain volcanic arc system (crosses). relative |  | Fouquet, Y., Pelleter, E., Konn, C., Chazot, G., DuprĂ©, S., Alix, A.S., ChĂ©ron, S., Donval, J.P., Guyader, V., Etoubleau, J., Charlou, J.L., Labanieh, S., Scalabrin, C. (2018) Volcanic and hydrothermal processes in submarine calderas: The Kulo Lasi example (SW Pacific) Ore Geology Reviews, 99. 314-343 doi:10.1016/j.oregeorev.2018.06.006 | Journal (article/letter/editorial) | | N-S oriented Alofi ridge. In 2010, the active volcano Kulo Lasi, which represents the most recent volcanic...volcanic zone. Kulo Lasi is a 20 km diameter shield volcano that rises 400 m above the seafloor. It is composed...distinguished at Kulo Lasi caldera. In stage 1, the shield volcano is built. Annular reverse faults develop at the...lowtemperature Fe/Mn mineralization at the summit of the volcano. During stage 2, the caldera collapse, gradually...estimated to be 1.6 km. Annular dykes feeding the new lava flows are controlled by the deep reverse faults |  | | Journal (article/letter/editorial) | | Conical Seamount and the Ladolam Gold Deposit, Papua New Guinea J. BRUCE GEMMELL,â ROBINA SHARPE, Centre for...basalt volcano situated 10 km south of Lihir Island in the Tabar-Feni island chain, Papua New Guinea...and precious metal precipitating event (stage 2). New sulfur isotope data allow a reinterpretation of this...subaerial Ladolam gold deposit on Lihir Island, Papua New Guinea. Petersen et al. (2002) published initial...report new laser-ablation and conventional sulfur isotope data for Conical seamount, as well as new conventional |  | Keith, Manuel, HĂ€ckel, Florian, Haase, Karsten M., Schwarz-Schampera, Ulrich, Klemd, Reiner (2016) Trace element systematics of pyrite from submarine hydrothermal vents. Ore Geology Reviews, 72. 728-745 doi:10.1016/j.oregeorev.2015.07.012 | Journal (article/letter/editorial) | | the Indian and Mid-Atlantic Ridges, the TongaâKermadec intra-oceanic arc, the Lau back-arc and the central...represented by samples from Brothers volcano and Volcano 19 from the TongaâKermadec arc. 2.1. Mid-ocean ridges...Jade (Izena hole) Kermadec Brothers (caldera) Tonga Volcano 19 (cone) Volcano 19 (caldera) 1-2 ...3. Intra-oceanic arcs Samples from Volcano 19 and Brothers volcano were studied as examples for hydrothermal...hydrothermal activity at intra-oceanic arc volcanoes. Volcano 19 is located at the southernmost part of the Tonga |  | | Journal (article/letter/editorial) | | hydrothermal system in the caldera of a submarine volcano in an island arc. The model is simulated in a number...selected based on data on fumaroles at Kudryavyi volcano [3] with a correction for the degassing pressure...Kings TJ N. Fiii West Mata Volcano O Volcano 1 Vai Lili Hine Hina Monowai Brothers 30° Calypso 30° 0° 30°...Americanâ New Zealand expeditions that worked at submarine volcanoes in the Mariana and TongaKermadec island...and 13° N Seamount in EPR) and Loihi subma rine volcano. As was demonstrated in [12 and others], the tactics |  | Iizasa, Kokichi, Asada, Akira, Mizuno, Katsunori, Katase, Fuyuki, Lee, Sangkyun, Kojima, Mitsuhiro, Ogawa, Nobuhiro (2019) Native gold and gold-rich sulfide deposits in a submarine basaltic caldera, Higashi-Aogashima hydrothermal field, Izu-Ogasawara frontal arc, Japan. Mineralium Deposita, 54 (1) 117-132 doi:10.1007/s00126-018-0808-2 | Journal (article/letter/editorial) | | grows predominantly beneath the basaltic volcanic islands of Aogashima, Hachijojima, and Oshima compared...submarine hydrothermal fields, and 11 volcanic islands in the northern arc. The hydrothermal fields occur...sulfide particles (48 wt%) with lesser amounts of magnetite and silicates (0.1 wt% each). Parts of the surface...cessation of sediment supply. This was followed by new metalliferous sediment deposition that formed layers...island arc seafloor massive sulfides from Brothers Volcano (de Miner Deposita Fig. 6 Photomicrographs |  | Agangi, Andrea, Reddy, S. M., Plavsa, D., Vieru, C., Selvaraja, V., LaFlamme, C., Jeon, H., Martin, L., Nozaki, T., Takaya, Y., Suzuki, K. (2018) Subsurface deposition of Cu-rich massive sulphide underneath a Palaeoproterozoic seafloor hydrothermal systemâthe Red Bore prospect, Western Australia. Mineralium Deposita, 53 (8) 1061-1078 doi:10.1007/s00126-017-0790-0 | Journal (article/letter/editorial) | | surrounded by discontinuous brecciated massive magnetite, and a narrow (< 2 m) alteration halo, which suggests...Formation within the Bryah Basin (Fig. 1). The volcano-sedimentary Bryah and Padbury Groups were deposited...mineralisation containing massive chalcopyrite and massive magnetite. The mineralisation does not extend along strike...m) in the centre and a discontinuous massive magnetite zone at the margin (see ESM E-2 for drill hole...[CuS]. The marginal zone is composed of massive magnetite (> 90%) with minor chalcopyrite and pyrite, and |  | | Journal (article/letter/editorial) | | exhibiting strong magmatic signatures, such as the Kermadec Arc and the PACMANUS field. By contrast, vent...values of fO2-fS2 near the pyrrhotite-pyrite-magnetite equilibrium point for vent fluids in basalt-hosted...Ridge systems NU are calculated to be in the magnetite stability field at 350°C rather than in the pyrite...arc-backarc vent systems, such as the Brothers Volcano in the Kermadec MA Arc (de Ronde et al., 2005, 2011)...predicting relatively high fO2-fS2 conditions in the Kermadec Arc, the PACMANUS field, the Mariner field in |  | | Journal (article/letter/editorial) | | AuHS° complex at low ÆO2 (buffered by fayalite, magnetite, and quartz) results in gold deposition at > 250...of Au and Ag grades difficult. However, important new data are coming to light on the actual concentrations...different types of seafloor hydrothermal have provided new clues to the causes of Au enrichment, with important...the calderas of arc-front volcanoes (Sunrise, Brothers); large CuâZn deposits in earlystage arc rifts...also have been documented in massive sulfides at Brothers, Palinuro Seamount, and in deposits on the Izu-Bonin |  | | Journal (article/letter/editorial) | | the past to explain this paradox as the Japanese islands sit above a subduction zone of the type widely...with the volcanoplutonic setting of the Japanese islands? In other words, is the established model for the...expedition from Spain to the West and discovery of a new, mineral-rich landmass (the Americas). Among the...with the volcanotectonic setting of the Japanese islands? If so, something may be fundamentally wrong with...potentially unfavorable factors present in the Japanese islands, such as: (i) extensional tectonics and submarine |  | Voudouris, Panagiotis, Kati, Marianna, Magganas, Andreas, Keith, Manuel, Valsami-Jones, Eugenia, Haase, Karsten, Klemd, Reiner, Nestmeyer, Mark (2020) Arsenian Pyrite and Cinnabar from Active Submarine Nearshore Vents, Paleochori Bay, Milos Island, Greece. Minerals, 11 (1) 14 doi:10.3390/min11010014 | Journal (article/letter/editorial) | | Lau Basin [12,13], the North Fiji Basin [14], the New Hebrides backâarc [15], and the Marthe Lau Basin...Basin [12,13], the North Fiji Basin [14], the New Hebrides back-arc [15], and the iana Trough [16],[16], as...Examplesinclude include TongaâKermadec intraâoceanic arc [9,20â23] 200 and thethe Tonga-Kermadec intra-oceanic arc...Kolumbo volcano in theinHellenic continental volcanic arc [24]. hydrothermal and the Kolumbo volcano the...Concepcion, Mexico [32â35]; Ambitle Island,New Papua New [29â31]; Guinea [29â31]; Punta and Bahia Concepcion |  | Keith, Manuel, Haase, Karsten M., Klemd, Reiner, Schwarz-Schampera, Ulrich, Franke, Henrike (2017) Systematic variations in magmatic sulphide chemistry from mid-ocean ridges, back-arc basins and island arcs. Chemical Geology, 451. 67-77 doi:10.1016/j.chemgeo.2016.12.028 | Journal (article/letter/editorial) | | the Raoul back-arc system separates the active Kermadec volcanic arc to the east and the remnant Colville...MANUSCRIPT volcanic ridge is located east of the New Hebrides island arc in the southern part of the Vate...volcanoes along mid-ocean ridges, such as Axial volcano and Lucky Strike on the Juan de SC R Fuca Ridge...from the Tonga-Kermadec island arc and the submarine caldera of Epi volcano of the New D Hebrides arc...Magmatic sulphide-bearing samples from the TE Kermadec arc include a gabbroic xenolith from Raoul Island |  | Dekov, Vesselin M., Garbe-Schönberg, Dieter, Kamenov, George D., GuĂ©guen, Bleuenn, Bayon, Germain, Bindi, Luca, Asael, Dan, Fouquet, Yves (2018) Redox changes in a seafloor hydrothermal system recorded in hematite-chalcopyrite chimneys. Chemical Geology, 483. 351-371 doi:10.1016/j.chemgeo.2018.02.041 | Journal (article/letter/editorial) | | Department of Geology and Geophysics, Yale University, New Haven, CT 06520, USA b A R T I C L E I N F O A...hydrothermal ïŹuid. The replacement of hematite by either magnetite or chalcopyrite at some places also suggests for...this smoker consist of chalcopyrite with rare magnetite and hematite inclusions (Petersen et al., 2009)...system and the hematite is further replaced by magnetite and later by Fe-sulïŹdes. High water/rock ratios...(B) euhedral hematite (hmt) partly altered to magnetite (mt) and late ïŹne-grained chalcopyrite (cpy) (optical |
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