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H ISOTOPE FRACTIONATION DUE TO HYDROGEN-ZINC REACTIONS AND ITS IMPLICATIONS ON DH ANALYSIS OF WATER SAMPLES

Demeny A. (1995)

After conversion of water to H2 gas with zinc for DH ratio determination, hydrogen gas can be absorbed by the zinc during cooling, resulting in H isotope fractionation. Thermal release and subsequent DH ratio determination ...

H2O ACTIVITY IN CONCENTRATED NACL SOLUTIONS AT HIGH PRESSURES AND TEMPERATURES MEASURED BY THE BRUCITE-PERICLASE EQUILIBRIUM

Aranovich L.Ya.; Newton R.C. (1996)

Активность H2O в концентрированных NaCl р-рах измерялась при 600-900°C и 2-15 кбар и при концентрациях NaCl до насыщения по галиту при снижении равновесной дегидратации в бинарной системе синтетических брусит-периклаз. ...

H2O ACTIVITY IN H2O-N2 FLUIDS AT HIGH PRESSURE AND TEMPERATURE MEASURED BY THE BRUCITE-PERICLASE EQUILIBRIUM

Haefner A.; Aranovich L.Y.; Connolly J.A.D.; Ulmer P. (2002)

We present experimental results constraining water activity in H2O-N2 fluids containing 40–90 mol% water at pressures of 6–13 kbar and temperatures of 680–840 °C. In the experiments, the displacement of the brucite dehydration ...

H2O CONCENTRATIONS IN PRIMARY MELTS FROM SUPRA-SUBDUCTION ZONES AND MID-OCEAN RIDGES: IMPLICATIONS FOR H2O STORAGE AND RECYCLING IN THE MANTLE

Sobolev A.V.; Chaussidon M. (1996)

A total of 145 inclusions, trapped and isolated in Mg-rich olivine phenocrysts (Fo0.87–0.94) from basalts and ultramafic lavas, and representing the most primitive mantle melts known, have been analysed by ion microprobe ...

H2O DIFFUSION IN DACITIC AND ANDESITIC MELTS

Behrens H.; Zhang Y.; Xu Z. (2004)

The diffusion of water in dacitic and andesitic melts was investigated at temperatures of 1458 to 1858 K and pressures between 0.5 and 1.5 GPa using the diffusion couple technique. Pairs of nominally dry glasses and hydrous ...

H2O DIFFUSION IN RHYOLITIC MELTS AND GLASSES

Zhang Y.; Behrens H. (2000)

H2O diffusion plays a major role in bubble growth and volcanic eruption. We report a comprehensive study of H2O diffusion in rhyolitic melts and glasses. This new study and previous investigations together cover a wide ...

H2O SPECIATION IN FLOAT GLASS AND SODA LIME SILICA GLASS

Stuke A.; Behrens H.; Schmidt B.C.; Dupree R. (2006)

The speciation of H2O in float glass (FG) and soda lime silica glass (SLS) was investigated using IR and NMR spectroscopy. Molar absorption coefficients for the near-infrared (NIR) combination bands at 4500 and 5200 cm- ...

H2O+ IN ROCKS AND QUARTZ FROM EPITHERMAL GOLD-SILVER DEPOSITS

Kravtsova R.G.; Trufanova L.G. (2001)

H2O2 TREATMENT OF RECENT CORAL ARAGONITE: OXYGEN AND CARBON ISOTOPIC IMPLICATIONS

Boiseau M.; Juillet-Leclerc A. (1997)

Coral skeletons contain relatively little organic material and inorganically precipitated carbonate cement, although these quantities are enough to bias geochemical measurements. Preliminary treatment is therefore often ...

H2S-bearing inclusions in recrystallized halite

Grishina S.N. (1987)

On a cryogenic investigation solid H2S was successively observed after freezing CO2 in water-poor fluid inclusions in halite of Cambrian Siberian salts. Melting of a H2S solid phase occurs at nearly eutectic temperatures ...

HAFNIUM ISOTOPE EVIDENCE FOR 'CONSERVATIVE' ELEMENT MOBILITY DURING SUBDUCTION ZONE PROCESSES

Woodhead J.D.; Hergt J.M.; Davidson J.P.; Eggins S.M. (2001)

The high field strength elements (HFSE) play a critical role in the interpretation of chemical variation within subduction-related magmas by providing an assumed mantle-dominated 'baseline' from which enrichments in many ...

HALOCARBONS IN THE ENVIRONMENT: ESTIMATES OF THERMODYNAMIC PROPERTIES FOR AQUEOUS CHLOROETHYLENE SPECIES AND THEIR STABILITIES IN NATURAL SETTINGS - REVISED EQUATIONS OF STATE FOR THE STANDARD PARTIAL MOLAL PROPERTIES OF IONS AND ELECTROLYTES

Haas J.R.; Shock E.L. (1999)

Standard partial molal thermodynamic parameters for the aqueous chlorinated-ethylene species, perchloroethylene (PCE), trichloroethylene (TCE), 1,1-dichloroethylene (1,1-DCE), cis-1,2-dichloroethylene (cis-1,2-DCE), ...

HALOGEN AND AR-AR AGE DETERMINATIONS OF INCLUSIONS WITHIN QUARTZ VEINS FROM PORPHYRY COPPER DEPOSITS USING COMPLEMENTARY NOBLE GAS EXTRACTION TECHNIQUES

Kendrick M.A.; Burgess R.; Pattrick R.A.D.; Turner G. (2001)

Extension of Ar-Ar methodology has been used to determine mineralisation ages from mica inclusions and to simultaneously evaluate the noble gas and halogen composition of inclusion fluids within irradiated quartz vein ...

HALOGENS IN MICAS OF VOLCANIC ROCKS OF THE KURILE-KAMACHATKA ISLAND-ARC SYSTEM

Volynets O.N.; Bushyakov I.N.; Voronina L.K. (1989)

The role of volatiles in island-arc magma generation is widely discussed in the geologic literature. Two of the most important volatile mineralizers are fluorine and chlorine, whose principal accumulator minerals in igneous ...

HANGING WALL FAULT KINEMATICS AND FOOTWALL COLLAPSE IN LISTRIC GROWTH FAULT SYSTEMS

Imber J.; Childs C.; Nell P.A.R.; Walsh J.J.; Hodgetts D.; Flint S. (2003)

We describe the structure of a listric growth fault system from SE Asia, using high-resolution, 3-D seismic data. The fault system shows systematic changes in geometry and kinematics that are sympathetic with along-strike ...

HAPLOANDESITIC MELTS AT MAGMATIC TEMPERATURES: IN SITU, HIGH-TEMPERATURE STRUCTURE AND PROPERTIES OF MELTS ALONG THE JOIN K2SI4O9-K2 (KAI)4O9 TO 1236OC AT ATMOSPHERIC PRESSURE

Mysen B. (1996)

The structure of haploandesitic magma was modeled via in situ, high-temperature Raman spectroscopy along the join K2Si4O9-K2(KAl)4O9 from 25 to 1236°C. These glasses and melts consist of Q^4, Q^3, and Q^2 structural units. ...

HARD-MODE INFRARED SPECTROSCOPY OF PEROVSKITES ACROSS THE CATIO3-SRTIO3 SOLID SOLUTION

Meyer H.-W.; Carpenter M.A.; Becerro A.I.; Seifert F. (2002)

Powder infrared spectra of perovskites across the CaTiO3-SrTiO3 solid solution have been collected at room temperature for the range 20–700 cm−1. Frequency, intensity, and line broadening parameters vary with a pattern ...

HARZBURGITE MELTING WITH AND WITHOUT H2O: EXPERIMENTAL DATA AND PREDICTIVE MODELING

Parman S.W.; Grove T.L. (2004)

The effect of H2O on harzburgite-saturated melts has been quantified with a series of hydrous and anhydrous melting experiments using a piston-cylinder device. Experimental conditions were 1.2–2.2 GPa and 1175–1500°C. Melt ...

HARZBURGITE-DUNITE-ORTHOPYROXENITE SUITE AS A RECORD OF SUPRA-SUBDUCTION ZONE SETTING FOR THE OMAN OPHIOLITE MANTLE

Tamura A.; Arai S. (2006)

We found a harzburgite-dunite-orthopyroxenite suite from the West Jizi block in the northern Oman ophiolite as a record of supra-subduction zone magmatism in the mantle. The orthopyroxenite has features of parallel dikes, ...

HAS THE PLATE BOUNDARY SHIFTED FROM CENTRAL HOKKAIDO TO THE EASTERN PART OF THE SEA OF JAPAN?

Kato N.; Sato H.; Orito M.; Hirakawa K.; Ikeda Y.; Ito T. (2004)

A NS trending Cenozoic fold-and-thrust belt has developed in the western part of the Hidaka Collision Zone (HCZ), central Hokkaido, Japan. A quantitative estimation of the late Cenozoic convergence rate at the front of the ...

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