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From Slab to Sinter: The Magmatic-Hydrothermal System of Savo Volcano, Solomon Islands

By Daniel James Smith

Abstract

The SW Pacific hosts world-class alkaline-related epithermal gold deposits. Savo Island, a recently active volcano in the Solomon Islands, is dominated by alkaline, sodic (≤7.5 wt % Na2O) lavas and pyroclastic deposits and has an active hydrothermal system, with hot springs and fumaroles. It thus represents a natural laboratory for studying the magmatic and hydrothermal processes that can form epithermal mineralisation. \ud The magmatic suite is divided into mugearites (plagioclase–clinopyroxene–magnetite ± amphibole ± olivine) and trachytes (plagioclase–amphibole–magnetite ± biotite). Mineralogy, geochemistry, and cumulate xenoliths within the lavas indicate that amphibole fractionation drove magmatic differentiation. Hydrous, alkali-rich magmas were likely derived from partial melting of metasomatised mantle, but radiogenic isotope data cannot discriminate the origin of metasomatic agents. \ud Hot springs at Savo include high pH, sulphate-rich discharges (with high Na, Si, Ca, K, low Cl−); atypical for magmatic-hydrothermal systems. These fluids form by the condensation of magmatic volatiles into meteoric-derived groundwater (high Ca, Mg, HCO3−) generating acidity by SO2 disproportionation into H2SO4 and H2S. Water chemistry, δ18O, and δD data indicate that rock reaction, dilution and boiling increase the fluid pH to 7–8. H2S oxidises at the surface, producing H2SO4 and native sulphur in steam-heated springs and fumaroles. The lack of isotopic equilibrium between the various sulphur species indicates that acidity is rapidly neutralised, and that the system is dominated by high pH fluids. \ud Precipitates around hot springs include sinter, travertine and mixed silica-carbonate. These are often enriched in Au and Te, indicating potential for mineralisation at Savo. Varying contributions from meteoric and hydrothermal fluids leads to alternating carbonate and silica precipitation, underlining the importance of high rainfall to the hydrothermal system. Sinter and travertine may be useful tools for the exploration of alkaline-related epithermal deposits, as they provide preservable records of hydrothermal activity and fluid chemistry

Publisher: University of Leicester
Year: 2009
OAI identifier: oai:lra.le.ac.uk:2381/8207

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Citations

  1. (1982). 8 and 20, pyroclastic flows and surges.
  2. (1987). A geophysical survey of the Woodlark-Solomons region. In:
  3. (2004). A hornblende basalt from western Mexico: Water-saturated phase relations constrain a pressure-temperature window of eruptibility.
  4. (1984). A hydrogen and isotope study of the San Cristobal mine, Peru: implications of the role of water to rock ratio for the genesis of wolframite deposits.
  5. (1990). A laser-based microanalytical method for the in situ determination of oxygen isotope ratios of silicates and oxides.
  6. (2004). A model for hot spring silicification.
  7. (1995). A morphotectonic interpretation of SOPACMAPS 1:500 000 charts, Central Solomon Islands - Southern Tuvalu.
  8. (2004). A new graphical presentation and subdivision of potassium micas.
  9. (2005). A review of the stable-isotope geochemistry of sulfate minerals in selected igneous environments and related hydrothermal systems.
  10. (1979). A revised equation for the Na/K geothermometer.
  11. (1994). A volcano-morphological map of the Gallego volcanic field,
  12. (1980). A working terminology of pyroclastic deposits.
  13. (1998). Accelerating late Quaternary uplift of the New Georgia Island Group (Solomon island arc) in response to subduction of the recently active Woodlark spreading center and Coleman seamount.
  14. (2004). Accretion of the Ontong Java Plateau to the Solomon arc: a historical perspective.
  15. (2005). Active geothermal systems with entrained seawater as modern analogues for transitional volcanic-hosted massive sulfide and continental magmatohydrothermal mineralization: the example of Milos Island,
  16. (2003). Adakites from continental collision zones: Melting of thickened lower crust beneath southern Tibet.
  17. (2006). Adakites without slab melting: High pressure differentiation of island arc magma,
  18. (2007). Adakitic dacites formed by intracrustal crystal fractionation of water-rich parent magmas at Nevado de Longavi Volcano (36.2° S; Andean Southern Volcanic Zone, Central Chile).
  19. (2000). Adakitic lavas in the Central Luzon back-arc region, Philippines: lower crust partial melting products?
  20. (1993). Addition of magmatic volatiles into the hot spring waters of Loowit Canyon,
  21. (1996). Age and geochemistry of basement and alkalic rocks of Malaita and Santa Isabel, Solomon Islands, southern margin of Ontong Java plateau.
  22. (1995). Alkalic-type epithermal gold deposits - a review. In: J.F.H. Thompson (Editor), Magmas, Fluids, Ore Deposits.
  23. (1986). Aluminum in hornblende; an empirical igneous geobarometer.
  24. (2004). AMPH-CLASS: An Excel spreadsheet for the classification and nomenclature of amphiboles based on the
  25. (1988). An evaluation of the global variations in the major element chemistry of arc basalts.
  26. (1987). An investigation of ridge subduction in the Woodlark-Solomons region: introduction and overview.
  27. (1986). An isotopic study of siderites, dolomites and ankerites at high temperatures.
  28. (2006). An overview of adakite petrogenesis.
  29. (2002). An unusual modern silicacarbonate sinter from Pavlova spring,
  30. (2003). Anatomy of siliceous hot springs: examples from Yellowstone National Park,
  31. (1991). Anhydrite-bearing pumices from Mount Pinatubo: further evidence for the existence of sulphur-rich silicic magmas.
  32. (1998). Association of adakites with gold and copper mineralization in the Philippines.
  33. (1999). Bacterial shrubs, crystal shrubs, and ray-crystal shrubs: bacterial vs. abiotic precipitation.
  34. (1984). Bacterial sulfate reduction and pH: Implications for early diagenesis.
  35. (2002). Basement geochemistry and geochronology of central Malaita, Solomon Islands, with implications for the origin and evolution of the Ontong Java Plateau.
  36. (1997). Biogenicity of silica precipitation around geysers and hotspring vents, North Island, New Zealand.
  37. (1985). Bizarre forms of depositional and diagenetic calcite in hot spring travertine, central Italy. In:
  38. (2005). Boron isotopic variations in fumarolic condensates and thermal waters from Vulcano Island, Italy: Implications for evolution of volcanic fluids.
  39. (2000). Cadmium, indium, tin, tellurium, and sulfur in oceanic basalts: Implications for chalcophile element fractionation in the Earth.
  40. (1982). Calculation of multicomponent chemical equilibria and reaction processes in systems involving minerals, gases and an aqueous phase.
  41. (2003). Calculation of oxygen isotope fractionation in magmatic rocks.
  42. (1984). Calculation of pH and mineral equilibria in hydrothermal waters with application to geothermometry and studies of boiling and dilution.
  43. (1998). Calculation of simultaneous chemical equilibria in aqueous-mineral-gas systems and its application to modeling hydrothermal processes. In:
  44. (2000). Can slab melting be caused by flat subduction?
  45. (1994). Carbonated, alkaline hybridizing melts from a sub-arc environment: Mantle wedge samples from the Tabar-Lihir-Tanga-Feni arc,
  46. (1997). Causes and consequences of pressurisation in lava dome eruptions.
  47. (2005). Cenozoic K-rich adakitic volcanic rocks in the Hohxil area, northern Tibet: Lower-crustal melting in an intracontinental setting.
  48. (1997). Characteristics and controls of the largest porphyry copper-gold and epithermal gold deposits in the circum-Pacific region.
  49. (2000). Characteristics and genesis of epithermal gold deposits. In:
  50. (1995). Characteristics of high sulfidation epithermal deposits, and their relation to magmatic fluid. In:
  51. (1984). Chemical geothermometers for geothermal exploration. In:
  52. (1984). Chemical structure of geothermal systems. In:
  53. (1977). Chemistry and Geothermal Systems.
  54. (1997). Cocos-Nazca slab window beneath Central America.
  55. (2001). Collision tectonics in the New Hebrides arc (Vanuatu).
  56. (1987). Comparative anatomy of volcanic-hosted epithermal deposits - acid-sulfate and adularia-sericite types.
  57. (1994). Compilation of working values and sample description for 383 geostandards.
  58. (1999). Complete miscibility between silicate melts and hydrous fluids in the upper mantle: experimental evidence and geochemical implications.
  59. (1987). Complex ridge subduction and island arc magmatism; an isotopic study of the New Georgia Forearc and the Woodlark Basin. In:
  60. (2002). Compliation of minimum and maximum isotope ratios of selected elements in naturally occurring terrestrial materials and reagents.
  61. (1996). Compressive tectonism along the eastern margin of Malaita Island (Solomon Islands).
  62. (1995). Contemporaneous formation of adjacent porphyry and epithermal Cu-Au deposits over 300 ka in northern Luzon,
  63. (2008). Controls on magmatism in an island arc environment: study of lavas and sub-arc xenoliths from the Tabar-Lihir-Tanga-Feni island chain, Papua New Guinea. Contributions to Mineralogy and Petrology,
  64. (2002). Copper-gold mineralisation in New Guinea: tectonics, lineaments, thermochronology and structure.
  65. (1986). Correlation of rock units in the central and western Solomon Islands. In:
  66. (2003). Cyanobacteria associated with hot spring travertines.
  67. (1979). D-H ratios, origins, and evolution of the ore-forming fluids for the Neogene veins and Kuroko deposits of Japan.
  68. (2000). Depositional Facies and Aqueous-Solid Geochemistry of Travertine-Depositing Hot Springs (Angel Terrace, Mammoth Hot Springs, Yellowstone National Park,
  69. (1999). Deposits associated with the 1990-1995 eruption of Unzen volcano,
  70. (1990). Derivation of some modern arc magmas by melting of young subducted lithosphere.
  71. (2000). Determination of arsenic species in seawater by flow injection hydride generation in situ collection followed by graphite furnace atomic absorption spectrometry: Stability of As(III).
  72. (1994). Development of the Burnham Model for prediction of H2O solubility in magmas. In:
  73. (2003). Diagenetic transformations (opal-A to quartz) of low- and midtemperature microbial textures in siliceous hot-spring deposits, Taupo Volcanic Zone,
  74. (1978). Direct reduction of sulfates to sulfur dioxide for isotopic analysis.
  75. (2002). Discussion on "Giant versus small porphyry copper deposits of Cenozoic age in northern Chile: adakitic versus normal calc-alkaline magmatism" by Oyarzun et al.
  76. (2002). Discussion on "Giant versus small porphyry copper deposits of Cenozoic age in northern Chile: adakitic versus normal calc-alkaline magmatism" by Oyarzun et al. (Mineralium Deposita 36:794-798,
  77. (1996). Diversity of iron and silica precipitation by microbial mats in hydrothermal waters, Iceland: Implications for Precambrian iron formations.
  78. (2003). Dubious case for slab melting in the Northern volcanic zone of the Andes.
  79. (1991). Dynamic strike-slip fault systems with respect to the Solomon Islands, and their effect on mineral potential.
  80. (2000). Earthquake-induced variations in the composition of the water in the geothermal reservoir at Vulcano Island, Italy.
  81. (2001). Epithermal Au-Ag-Te mineralization, Acupan, Baguio district, Philippines: Numerical simulations of mineral deposition.
  82. (1995). Epithermal gold deposits of the southwest Pacific.
  83. (1995). Epithermal gold deposits: styles, characteristics and exploration.
  84. (1996). Epithermal gold mineralization, Acupan, Baguio district, Philippines: Geology, mineralization, alteration and the thermochemical environment of ore deposition.
  85. (1997). Equilibrium and nonequilibrium oxygen isotope effects in synthetic carbonates.
  86. (2001). Equilibrium oxygen, hydrogen and carbon isotope fractionation factors applicable to geologic systems.
  87. (1994). Erosion and collapse of volcanoes; causes of telescoping in intrusion-centered ore deposits.
  88. (1967). Estimation of mass absorption coefficient by Compton scattering: Improvements and extensions of the method.
  89. (1991). Evaluation and development of gas geothermometry for geothermal exploration in the East African Rift System. WD/91/72, British Geological Survey.
  90. (1996). Evaluation of a 202Pb-205Pb double spike for high-precision lead isotope analysis, Geophysical Monograph 95, Earth Processes: Reading the Isotopic Code,
  91. (1982). Evolution and classification of orogenic volcanic rocks. In: R.S. Thorpe (Editor), Andesites: orogenic andesites and related rocks.
  92. (1998). Evolution of an intrusion-centered hydrothermal system: Far Southeast-Lepanto porphyry and epithermal Cu-Au deposits,
  93. (1995). Evolution of hydrothermal waters at Mount St. Helens,
  94. (2002). Experimental and modeled solubilities of chlorine in aluminosilicate melts, consequences of magma evolution, and implications for exsolution of hydrous chloride melt at Mt.
  95. (1993). Experimental investigations of the role of H2O in calc-alkaline differentiation and subduction zone magmatism. Contributions to Mineralogy and Petrology,
  96. (1987). Experimental study of hydrogen isotope exchange between aluminous chlorite and water and of hydrogen diffusion in chlorite.
  97. (2000). Exploration for epithermal gold deposits. In:
  98. (1997). Explosive basaltic volcanism from Cerro Negro volcano: Influence of volatiles on eruptive style.
  99. (1997). Fluid chemistry and processes at the Porgera gold deposit,
  100. (2007). Fluid immiscibility in volcanic environments.
  101. (2003). Fluid-rock interaction at the magmatic-hydrothermal interface of the Mount Cagua geothermal system,
  102. (2007). Fluids in early stage hydrothermal alteration of high-sulfidation epithermal systems: A view from the Vulcano active hydrothermal system (Aeolian Island, Italy).
  103. (1994). Flux of volatiles and ore-forming metals from the magmatic-hydrothermal system of Satsuma Iwojima volcano.
  104. (2003). Formation of acid volcanic brines through interaction of magmatic gases, seawater, and rock within the White Island volcanichydrothermal system, New Zealand. In:
  105. (1997). Gangue mineral transport and deposition. In: H.L. Barnes (Editor), Geochemistry of Hydrothermal Ore Deposits, 3rd Edition.
  106. (1999). Generation of block and ash flows during the 1990-1995 eruption of Unzen Volcano,
  107. (1993). Generation of sodium-rich magmas from newly underplated basaltic crust.
  108. (1987). Genesis of acid-sulfate alteration and Au-Cu-Ag mineralization at Summitville,
  109. (2005). Genesis of large siliceous stromatolites at Frying Pan Lake, Waimangu geothermal field,
  110. (1998). Geochemical and isotopic evidence for seawater contamination of the hydrothermal system of Taal Volcano, Luzon, the Philippines.
  111. (2003). Geochemical confirmation of the Kula-Farallon slab window beneath the Pacific Northwest in Eocene time.
  112. (2004). Geochemical constraints on the petrogenesis of arc picrites and basalts, New Georgia Group, Solomon Islands. Contributions to Mineralogy and Petrology,
  113. (1981). Geochemical evidence for magmatic fluids in porphyry copper
  114. (2003). Geochemical evidence for mixing of magmatic fluids with seawater, Nisyros hydrothermal system,
  115. (2001). Geochemical evidence for the melting of subducting oceanic lithosphere at plate edges.
  116. Geochemical variations in Vanuatu arc lavas: the role of subducted material and a variable mantle wedge composition.
  117. (1987). Geochemistry and petrology of volcanic rocks from the Woodlark Basin; addressing questions of ridge subduction.
  118. (1987). Geochemistry of Cenezoic volcanic rocks,
  119. (1978). Geochemistry of Hakone, Yugawara and Atami hydrothermal systems.
  120. (1985). Geochemistry of Holocene volcanic rocks associated with ridge subduction in
  121. Geochemistry of magmatic gases from Kudryavy volcano, Iturup, Kuril Islands.
  122. (2000). Geochemistry of the magmatichydrothermal system of
  123. (1984). Geochemistry of the rare earth elements: meteorite studies.
  124. (1998). Geochemistry of the volcano-hydrothermal system of El Chichón Volcano,
  125. (1998). Geologic model of the magmatic-hydrothermal system of Vulcano (Aeolian Islands, Italy). Mineralogy and Petrology,
  126. (2005). Geological characteristics of epithermal precious and base metal deposits,
  127. (1999). Geological-tectonic framework of Solomon Islands, SW Pacific; crustal accretion and growth within an intra-oceanic setting.
  128. (1994). Geology, geochemistry, and origin of high sulfidation Cu-Au mineralization in the Nansatsu District,
  129. (2003). Geology, mineralization and hydrothermal evolution of the Ladolam gold deposit, Lihir Island,
  130. (2005). GeoReM: A new geochemical database for reference materials and isotopic standards.
  131. (1995). Geothermal activity of Savo Volcanic Island, Solomon Islands. A review and interpretation of temperature data obtained from geothermal vents during the period
  132. (1983). Geothermal mineralization; I, The mechanism of formation of the Beowawe, Nevada, siliceous sinter deposit.
  133. (1977). Geothermal reservoir temperatures estimated from the oxygen isotope compositions of dissolved sulfate and water from hot springs and shallow drillholes.
  134. (1988). Geothermal solute equilibria. Derivation of Na-K-Mg-Ca geoindicators.
  135. (1983). Geothermal systems ancient and modern: a geochemical review.
  136. (2005). Giant porphyry deposits: characteristics, distribution and tectonic controls.
  137. (2001). Giant versus small porphyry copper deposits of Cenozoic age in northern Chile: adakitic versus normal calc-alkaline magmatism.
  138. (1997). Gisements epithermaux et porphyriques: la connexion adakite.
  139. (2004). Global Network of Isotopes in Precipitation Database. IAEA / WMO, accessible at http:// isohis.iaea.org.
  140. (1973). Gold Abundance in Igneous Rocks; bearing on Gold Mineralization.
  141. (1986). Gold deposition from geothermal discharges in New Zealand.
  142. (2000). Gold deposits related to alkaline magmatism. In:
  143. (2006). Gold in magmatic hydrothermal solutions and the rapid formation of a giant ore deposit.
  144. (2002). Gold-copper mineralization in alkaline rocks.
  145. (1993). H2O in basalt and basaltic andesite glass inclusions from 4 subductionrelated volcanoes.
  146. (2007). High arsenic concentrations and enriched sulfur and oxygen isotopes in a fractured-bedrock ground-water system.
  147. (2006). High precision Pb and Sr-NdHf isotope constraints on mantle source variations along the Solomon arc.
  148. (2001). High δ13C fumarolic CO2 discharged from Ogasawara-Iwojima, an active volcanic island in the Izu–Bonin arc.
  149. (2007). High-magnesian andesite from Mount Shasta: A product of magma mixing and contamination, not a primitive mantle melt.
  150. (2007). High-precision Pb isotope measurements discriminate different subduction components along the Solomon island arc.
  151. (1990). High-sensitivity Nb analysis by spark source mass spectrometry (SSMS) and calibration of XRF Nb and Zr.
  152. (1996). High-temperature (>90°C) calcite precipitation at Waikite Hot Springs, North Island, New Zealand.
  153. (2003). Hot spring and geyser sinters: the integrated product of precipitation, replacement, and deposition.
  154. (2001). Hydrogen isotope analysis of natural abundance and deuterium-enriched waters by reduction over chromium on-line to a dynamic dual inlet isotope-ratio mass spectrometer.
  155. (1997). Hydrothermal alteration and its relationship to ore fluid composition. In:
  156. (1985). Hydrothermal eruptions in the Waiotapu geothermal system, New Zealand; their origin, associated breccias, and relation to precious metal mineralization.
  157. (2000). Hydrothermal minerals and precious metals in the BroadlandsOhaaki geothermal system: Implications for understanding low- sulfidation epithermal environments.
  158. (1999). Hydrothermal processes related to movement of fluid from plastic into brittle rock in the magmatic-epithermal environment.
  159. (2001). Hydrous metasomatism of oceanic sub-arc mantle, Lihir,
  160. (1993). Initial gold contents of silicic volcanic rocks: Bearing on the behavior of gold in magmatic systems.
  161. (1995). Intracrustal derivation of Na-rich andesitic and dacitic magmas - an example from Volcan Ollague, Andean Central Volcanic Zone.
  162. (1990). Intraplate-type magmatism in a continent islandarc collision zone: Porgera intrusive complex,
  163. (2003). Island arc picrites from the solomon islandsorigin by mantle matrix collapse.
  164. (1979). Isotopes of sulfur and carbon. In: H.L. Barnes (Editor), Geochemistry of Hydrothermal Ore Deposits, 2nd Edition.
  165. (2000). Isotopic and Chemical Techniques in Geothermal Exploration, Development and Use: Sampling Methods, Data Handling, Interpretation International Atomic Energy Agency,
  166. (1991). Isotopic evidence of the depositional environment of Late Proterozoic stratiform barite mineralization, Aberfeldy,
  167. (1968). Isotopic properties of sulfur compounds in hydrothermal processes.
  168. (1992). Isotopic shifts in waters from geothermal and volcanic systems along convergent plate boundaries and their origin.
  169. (1961). Isotopic variations in meteoric waters.
  170. (1987). Kavachi, an active forearc volcano in the western Solomon Islands: reported eruptions between 1950 and
  171. (1982). Kinetically Controlled Variations of Major Components and Carbon and Oxygen Isotopes in a Calcite-Precipitating Spring. Chemical Geology,
  172. (1982). Kinetics of reactions between aqueous sulfates and sulfides in hydrothermal systems.
  173. (2004). Layered lithospheric mantle beneath the Ontong Java Plateau: Implications from xenoliths in alnöite, Malaita, Solomon Islands.
  174. (1985). Light stable isotope systematics in the epithermal environment. In:
  175. (2003). Linkages between volcanotectonic settings, ore-fluid compositions, and epithermal precious metal deposits. In: S.F. Simmons and I. Graham (Editors), Volcanic,
  176. (1998). Magma Genesis in the New Britain island arc: further insights into melting and mass transfer processes.
  177. (1979). Magmas and hydrothermal fluids. In: H.L. Barnes (Editor), Geochemistry of Hydrothermal Ore Deposits, 2nd Edition.
  178. (2001). Magmatic gas scrubbing: implications for volcano monitoring.
  179. (2004). Magmatic vapor contraction and the transport of gold from the porphyry environment to epithermal ore deposits.
  180. (1978). Magmatic vapour plumes and groundwater interaction in porphyry copper emplacement
  181. (1986). Magmatic volatiles: isotopic variation of
  182. (1997). Mantle geochemistry: the message from oceanic volcanism.
  183. (1976). Matrix corrections in trace-element analysis by X-ray fluorescence: An extension of the Compton scattering technique to long wavelengths.
  184. (1997). Metal tranpsort by hydrothermal ore fluids. In: H.L. Barnes (Editor), Geochemistry of Hydrothermal ore Deposits, 3rd edition.
  185. (1991). Meteoric interaction with magmatic discharges in Japan and the significance for mineralization. Geology,
  186. (2003). Method validation for the determination of major and trace anions by Ion Chromatography (DX-600). British Geological Survey Internal Report IR/03/79.
  187. (1991). Microenvironmental controls on mineralogy and habit of CaCO3 precipitates: an example from an active travertine system.
  188. (2002). Multicollector ICP-MS analysis of Pb isotopes using a 207Pb-204Pb double spike demonstrates up to 400 ppm/amu systematic errors in Tl-normalization.
  189. (1995). Na metasomatism in the island-arc mantle by slab melt- peridotite interaction: Evidence from mantle xenoliths in the north Kamchatka arc.
  190. (1979). New basic empirical expression for computing tables of X-ray mass attenuation coefficients.
  191. (2004). Noble gas and carbon isotopes of fumarolic gas from Iwojima volcano, Izu-Ogasawara arc, Japan: implications for the origin of unusual arc magmatism.
  192. (1997). Nomenclature of amphiboles: Report of the subcommittee on amphiboles of the International Mineralogical Association, commission on new minerals and mineral names.
  193. (1976). Nuée ardente eruption from the foot of a dacite lava flow, Santiaguito volcano,
  194. (2002). Ohaaki reservoir chemistry: characteristics of an arc-type hydrothermal system in the Taupo Volcanic Zone, New Zealand.
  195. (2004). Oligocene to Recent tectonic history of the Central Solomon intra-arc basin as determined from marine seismic reflection data and compilation of onland geology.
  196. (1950). On the isotopic chemistry of carbonates and a paleotemperature scale.
  197. (1983). Ophiolite-contaminated andesites, trachybasalts, and cognate inclusions of Mount Lamington,
  198. (1994). Ore Elements in Arc Lavas. Oxford monographs on geology and geophysics; no.24.
  199. (2004). Origin of adakitic intrusives generated during mid-Miocene east-west extension in southern Tibet.
  200. (1995). Origin of carbon in fumarolic gas from island arcs.
  201. (1995). Origin of the fumarolic fluids of Vulcano Island, Italy and implications for volcanic surveillance.
  202. (1994). Origins of calcite in a boiling geothermal system.
  203. (1981). Orogenic Andesites and Plate Tectonics.
  204. (1976). Oxidation of opaque mineral oxides in basalts. In: D. Rumble III (Editor), Oxide Minerals. Reviews in Mineralogy.
  205. (2005). Partial melting of slab window margins: genesis of adakitic and non-adakitic magmas.
  206. (1994). Partial melting of subducting oceanic crust.
  207. (1985). Partitioning of 13C and 12C on the Degassing of CO2 and the Precipitation of Calcite - Rayleigh-Type Fractionation and a Kinetic-Model.
  208. (1995). Partitioning of elements between silicate melt and H2O - NaCl fluids at 1.5 and 2.0 GPa pressure: Implications for mantle metasomatism.
  209. (2003). Petrography and genesis of spicular and columnar geyserite from the Whakarewarewa and Orakeikorako geothermal areas, North Island, New Zealand.
  210. (2005). Petrological constraints on the origin of arc picrites,
  211. (1999). Petrology and geochemistry of Camiguin Island, southern Philippines: insights into the source of adakites and other lavas in a complex arc setting. Contributions to Mineralogy and Petrology,
  212. (2002). Petrology of subducted slabs.
  213. (1978). Porphyry copper mineralization at the Koloula igneous complex, Guadalcanal, Solomon Islands.
  214. (2001). Porphyry-epithermal transition: Maricunga belt, northern Chile.
  215. (2001). Potassic igneous rocks from the vicinity of epithermal gold mineralization, Lihir Island,
  216. (1998). Procedure for the analysis of rubidium-strontium and samarium-neodymium isotopes at the NERC Isotope Geosciences Laboratory.
  217. (2002). Procedures for the analysis of common lead at the NERC Isotope Geosciences Laboratory and an assessment of data quality.
  218. (1982). Processes controlling the isotopic composition of steam and water discharges from steam vents and steam-heated pools in geothermal areas.
  219. (2003). Production and loss of high-density batholithic root,
  220. (2002). PX-NOM - an interactive spreadsheet program for the computation of pyroxene analyses derived from the electron microprobe.
  221. (1975). Quantitative Preparation of Sulfur-Dioxide, for 34S-32S Analyses, from Sulfides by Combustion with Cuprous-Oxide.
  222. (2005). Re-Os isotope studies of Mindanao adakites: Implications for sources of metals and melts.
  223. (1999). Reaction between slab-derived melts and peridotite in the mantle wedge: experimental constraints at 3.8 GPa.
  224. (1979). Relationship between 13C and 18O fractionation and changes in major element composition in a recent calcite-depositing spring -- A model of chemical variations with inorganic CaCO3 precipitation.
  225. (1987). Ridge subduction and forearc volcanism; petrology and geochemistry of rocks dredged from the western Solomon Arc and Woodlark Basin. In:
  226. (2002). Roasting the mantle: Slab melting and the genesis of major Au and Au-rich Cu deposits.
  227. (2006). Sampling and analysis of geothermal fluids.
  228. (1958). Savo volcano - a potential danger to its inhabitants, The Solomon Islands - geological exploration and research,
  229. (1996). Seasonal changes in silica deposition in hot spring systems.
  230. (2004). Sequence stratigraphy, structural style, and age of deformation of the Malaita accretionary prism (Solomon arc–Ontong Java Plateau convergent zone).
  231. (2004). Silica phases in sinters and residues from geothermal fields of New Zealand. EarthScience Reviews,
  232. (2005). Silica-carbonate stromatolites related to coastal hydrothermal venting in Bahía Concepción,
  233. (2003). Siliceous shrubs in hot springs from Yellowstone National Park,
  234. (1987). Simulations of the HDO and H2 18O atmospheric cycles using the NASA GISS general circulation model: The seasonal cycle for present-day conditions.
  235. (2007). Sinter-Vein Correlations at Buckskin Mountain, National District,
  236. (1994). Solubilities of sulfur, noble gases, nitrogen, chlorine, and fluorine in magmas.
  237. (1965). Some applications of thermochemical data to problems of ore deposits; Part 2, Mineral assemblages and the composition of ore forming fluids.
  238. (1970). Some investigations of the deposition of travertine from Hot Springs—I. The isotopic chemistry of a travertine-depositing spring.
  239. (2002). Some metallogenic features of gold and copper deposits related to alkaline rocks and consequences for exploration.
  240. (1991). Sources of metals in the Porgera gold deposit,
  241. (2007). Special Paper: Adakite-like rocks: their diverse origins and questionable role in metallogenesis.
  242. (1974). Stable carbon isotope ratios and the existence of a gas phase in the evolution of carbonate ground waters.
  243. (1986). Stable isotope geochemistry of ore deposits. In:
  244. (2005). Stable isotope-based modeling of the origin and genesis of an unusual Au–Ag–Sn–W epithermal system at Cirotan,
  245. (1984). Stable isotopes in hydrothermal systems. In:
  246. (1989). Stable isotopic aspects of fluid flow in the Krafla, Namafjall and Theistareykir geothermal systems of Northeast Iceland.
  247. (2005). Stable-isotope geochemistry of the Pierina high-sulfidation Au-Ag deposit, Peru: influence of hydrodynamics on SO4 2--H2S sulfur isotopic exchange in magmaticsteam and steam-heated environments.
  248. (1999). Standardization for oxygen isotope ratio measurement -still an unsolved problem.
  249. (1969). Steam tables - thermodynamic properties of water including vapor, liquid and solid phases (International Edition - metric units).
  250. (1993). Stratigraphic and petrochemical data support subduction polarity reversal of the Cretaceous Caribbean Island Arc.
  251. (2000). Stromatolites Forming in Acidic Hot-Spring Waters,
  252. (1986). Strontium isotope stratigraphy.
  253. (1997). Structure and deformation of north and central Malaita, Solomon Islands; tectonic implications for the Ontong Java Plateau-Solomon arc collision, and for the fate of oceanic plateaus.
  254. (1994). Structure and Quaternary tectonic history of the Woodlark Triple Junction region, Solomon Islands.
  255. (1996). Subduction of diverging plates and the principles of slab window formation.
  256. (1981). Subduction without volcanism in the Solomon Islands arc.
  257. (1990). Subduction, arc reversal, and the origin of porphyry copper-gold deposits in island arcs.
  258. (1984). Sulfur and oxygen isotopic systematics of the 1982 eruptions of El Chichon volcano,
  259. (2002). Sulfur isotope systematics of the 1982 El Chichon trachyandesite: An ion microprobe study.
  260. (1986). Sulfur isotopes and pyrite-anhydrite equilibria in a volcanic-basin hydrothermal system of the Middle to Lower Yangtze River Valley.
  261. (1982). Sulfur isotopic compositions of ores from Mines Gaspe, Quebec - an example of sulfate-sulfide isotopic disequilibria in ore-forming fluids with applications to other porphyry-type deposits.
  262. (2000). Sulfur isotopic effects in the disproportionation reaction of sulfur dioxide in hydrothermal fluids: implications for the 34S variations of dissolved bisulfate and elemental sulfur from active crater lakes.
  263. (2006). Supra-subduction zone pyroxenites from San Jorge and Santa Isabel (Solomon Islands).
  264. (2003). Taxonomic fidelity of silicified filamentous microbes from hot-spring systems in the Taupo Volcanic Zone, North Island, New Zealand.
  265. (1995). Tectonic implications of the composition of volcanic arc magmas.
  266. (2003). Telluride mineralogy of the low-sulfidation epithermal Emperor gold deposit,
  267. (1984). The
  268. (1901). The a in 1568.
  269. (1985). The behaviour of silica in hydrothermal solutions.
  270. (1987). The chemistry and mineralogy of a CO2-rich travertine depositing spring in the California Coast Range.
  271. (1990). The chemistry of fumarolic vapor and thermal-spring discharges from the Nevado del Ruiz volcanic-magmatic-hydrothermal system,
  272. (1995). The composition of the continental crust.
  273. (2004). The crater lake and hydrothermal system of Mount Pinatubo, Philippines: evolution in the decade after eruption.
  274. (2007). The dynamics of travertine dams.
  275. (1994). The effect of H2O, CO2 and F on the density and viscosity of silicate melts.
  276. (1977). The effects of subsurface boiling and dilution on the isotopic compositions of Yellowstone thermal waters.
  277. (2003). The eruptive history and volcanic hazards of Savo, Solomon Islands. Bulletin of Volcanology,
  278. (1993). The evolution of magmatic fluids in the epithermal environment; the stable isotope perspective.
  279. (2004). The exsolution of magmatic hydrosaline chloride liquids.
  280. (1996). The generation of small melt-fractions in truncated melt columns: constraints from magmas erupted above slab windows and implications for MORB genesis.
  281. (2006). The genesis of intermediate and silicic magmas in deep crustal hot zones.
  282. (1980). The geology of Guadalcanal, Solomon Islands.
  283. (2005). The Gold Ridge Mine, Guadalcanal, Solomon Islands' first gold mine: a case study in stakeholder consultation. In:
  284. (2006). The gold–vanadium–tellurium association at the Tuvatu gold–silver prospect, Fiji: conditions of ore deposition.
  285. (2005). The hot spring and geyser sinters of El Tatio,
  286. (1991). The hydrothermal geochemistry of gold. In:
  287. (1998). The hydrous phase equilibria (to 3 kbar) of an andesite and basaltic andesite from western Mexico: constraints on water content and conditions of phenocryst growth. Contributions to Mineralogy and Petrology,
  288. (1993). The influence of water on the petrogenesis of subduction related igneous rocks.
  289. (1967). The iron-titanium oxides of sialic volcanic rocks and their associated ferromagnesian silicates. Contributions to Mineralogy and Petrology,
  290. (1963). The isotopic geochemistry of water and carbon in geothermal areas.
  291. (2000). The nature and genesis of gold-silver-tellurium mineralization in the Metaliferi Mountains of western Romania.
  292. (1997). The origin and evolution of fluids in magmatic-hydrothermal systems.
  293. (2005). The physical and chemical evolution of low-salinity magmatic fluids at the porphyry to epithermal transition: a thermodynamic study.
  294. (1993). The Porgera gold mine, Papua New Guinea - magmatic hydrothermal to epithermal evolution of an alkalic-type precious-metal deposit.
  295. (1993). The relationship between epithermal and porphyry hydrothermal systems within the Tavua
  296. (1994). The role of magmas in the formation of hydrothermal ore deposits.
  297. (2005). The role of preexisting geologic architecture in the formation of giant porphyry-related Cu +/- Au deposits: Examples from New Guinea and Chile.
  298. (2007). The role of slab melting in the petrogenesis of highMg andesites: evidence from Simbo Volcano, Solomon Islands. Contributions to Mineralogy and Petrology,
  299. (1966). The Solomon Islands as an island arc.
  300. (1987). The spatial distribution of earthquakes, focal mechanisms and subducted lithosphere in the Solomon Islands. In: B. Taylor and N.F.
  301. (1987). The stability of igneous anhydrite: experimental results and implications for sulfur behavior in the 1982 El Chichon trachyandesite and other evolved magmas.
  302. (1992). The stable isotope geochemistry of acid sulfate alteration.
  303. (2000). The stable isotope geochemistry of volcanic lakes, with examples from Indonesia.
  304. (1962). The system H2O-NaCl at elevated temperatures and pressures.
  305. (2007). The system H2O-NaCl. Part I: Correlation formulae for phase relations in temperature-pressure-composition space from 0 to 1000°C, 0 to 5000 bar, and 0 to 1 XNaCl.
  306. (1992). The tectonic significance of Ordovician magmatism in the eastern Lachlan Fold Belt.
  307. (1995). The use of tritium in groundwater to determine fluid mean residence times of Valles caldera hydrothermal fluids,
  308. (1979). Thermal effects of ridge subduction.
  309. (2001). Trace element and isotopic evidence for two types of crustal melting beneath a High Cascade volcanic center,
  310. (1982). Trace element characteristics of lavas from destructive plate boundaries. In: R.S. Thorpe (Editor), Andesites: Orogenic Andesites and Related Rocks.
  311. (1984). Travertines; depositional morphology and the bacterially constructed constituents
  312. (1977). Triple junctions as a cause for anomalously near-trench igneous activity between the trench and volcanic arc.
  313. (2000). Tritium and stable isotopes of magmatic waters.
  314. (2007). True and brittle micas: composition and solid-solution series.
  315. (2007). U-Pb and Re-Os geochronologic evidence for two alkalic porphyry ore-forming events in the Cadia District,
  316. (1975). Ultramafic and mafic inclusions, Kanaga Island, Alaska, and the occurrence of alkaline rocks in island arcs.
  317. (1993). Using geochemical data: evaluation, presentation, interpretation.
  318. (1999). Validation of the procedure for the determination of major and trace cations in aqueous samples by inductively coupled plasma-atomic emission spectrometry (Fisons/ARL 3580). British Geological Survey
  319. (2002). Validation report for the analysis of aqueous solutions by ICP-MS,
  320. (2005). Vapor transport of metals and the formation of magmatichydrothermal ore deposits.
  321. (1953). Variation of O18 content of waters from natural sources.
  322. (1992). Wall rock alteration and hydrothermal flow paths about the Ann-Mason porphyry copper deposit, Nevada - a 6 km vertical reconstruction.
  323. (1993). White Island, New Zealand, volcanic-hydrothermal system represents the geochemical environment of high-sulfidation Cu and Au ore deposition.
  324. (1973). X-ray fluorescence analysis applying theoretical matrix corrections. Stainless steel.

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