Search Results - "Burnard, Peter"

Chondritic xenon in the Earth’s mantle by Caracausi, Antonio, Avice, Guillaume, Burnard, Peter G., Füri, Evelyn, Marty, Bernard

“…High-precision analysis of magmatic gas from the Eifel volcanic area in Germany suggests that the light xenon isotopes reflect a chondritic primordial…”
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Constraints on the noble gas composition of the deep mantle by bubble-by-bubble analysis of a volcanic glass sample from Iceland by Colin, Aurélia, Moreira, Manuel, Gautheron, Cécile, Burnard, Peter

“…Contamination of samples by air-derived noble gases is a well-known problem in noble gas geochemistry, and, as a result, determining the true neon and argon…”
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A new all-metal induction furnace for noble gas extraction by Zimmermann, Laurent, Avice, Guillaume, Blard, Pierre-Henri, Marty, Bernard, Füri, Evelyn, Burnard, Peter G.

“…A new all-metal induction furnace for extraction of all noble gases from pyroxenes, olivines, quartz or barites has been developed at CRPG. It differs in…”
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Nitrogen isotopes in the recent solar wind from the analysis of Genesis targets: Evidence for large scale isotope heterogeneity in the early solar system by Marty, Bernard, Zimmermann, Laurent, Burnard, Peter G., Wieler, Rainer, Heber, Veronika S., Burnett, Donald L., Wiens, Roger C., Bochsler, Peter

“…We have analyzed nitrogen, neon and argon abundances and isotopic ratios in target material exposed in space for 27 months to solar wind (SW) irradiation…”
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No evidence for change of the atmospheric helium isotope composition since 1978 from re-analysis of the Cape Grim Air Archive by Mabry, Jennifer C., Lan, Tefang, Boucher, Christine, Burnard, Peter G., Brennwald, Matthias S., Langenfelds, Ray, Marty, Bernard

“…The helium isotope composition of air might have changed since the industrial revolution due to the release of 4He-rich crustal helium during exploitation of…”
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Helium and Neon Abundances and Compositions in Cometary Matter by Marty, Bernard, Palma, Russell L, Pepin, Robert O, Zimmermann, Laurent, Schlutter, Dennis J, Burnard, Peter G, Westphal, Andrew J, Snead, Christopher J, Bajt, Saša, Becker, Richard H, Simones, Jacob E

“…Materials trapped and preserved in comets date from the earliest history of the solar system. Particles captured by the Stardust spacecraft from comet 81P/Wild…”
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Spatial analysis of the atmospheric helium isotopic composition: Geochemical and environmental implications by Boucher, Christine, Lan, Tefang, Mabry, Jennifer, Bekaert, David V., Burnard, Peter G., Marty, Bernard

“…Spatial variations in the atmospheric helium isotopic composition (RA = 3He/4Heair = 1.39 × 10−6) might be induced by localized and/or regional inputs of 3He…”
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Timescale monitoring of vesuvian eruption using numerical modeling of the diffusion equation by Amalberti, Julien, Antoine, Xavier, Burnard, Peter

“…It is necessary to understand the diffusive behavior of the volatile phase in order to interpret the control mechanisms of the bubble size in volcanic rocks…”
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The diffusion coefficients of noble gases (HeAr) in a synthetic basaltic liquid: One-dimensional diffusion experiments by Amalberti, Julien, Burnard, Pete, Tissandier, Laurent, Laporte, Didier

“…Diffusion coefficients of noble gases in silicate liquids are poorly known, and, as a result, it is difficult to quantify the importance of kinetic…”
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Importance of mantle derived fluids during granite associated hydrothermal circulation: He and Ar isotopes of ore minerals from Panasqueira 1 1Associate editor: R. Wieler by Burnard, Peter G., Polya, David A.

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Tracing helium isotope compositions from mantle source to fumaroles at Oldoinyo Lengai volcano, Tanzania by Mollex, Gaëlle, Füri, Evelyn, Burnard, Pete, Zimmermann, Laurent, Chazot, Gilles, Kazimoto, Emmanuel O., Marty, Bernard, France, Lydéric

“…Oldoinyo Lengai is the only volcano on Earth currently erupting natrocarbonatites, of which the source and genesis remain controversial. Cognate xenoliths and…”
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Atmospheric helium isotope composition as a tracer of volcanic emissions: A case study of Erta Ale volcano, Ethiopia by Boucher, Christine, Lan, Tefang, Marty, Bernard, Burnard, Peter G., Fischer, Tobias P., Ayalew, Dereje, Mabry, Jennifer, Maarten de Moor, J., Zelenski, Michael E., Zimmermann, Laurent

“…The composition of atmospheric helium is generally considered to be constant (3He/4He=1.39×10−6) on a large spatial scale. However, local variations may arise…”
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Importance of mantle derived fluids during granite associated hydrothermal circulation: He and Ar isotopes of ore minerals from Panasqueira by Burnard, P G, Polya, D A

“…Helium trapped in arsenopyrite and wolframite from the Panasqueira hydrothermal deposit in central Portugal is overwhelmingly--~ 75 percent-- derived from the…”
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Constraints on fluid origins and migration velocities along the Marmara Main Fault (Sea of Marmara, Turkey) using helium isotopes by Burnard, P., Bourlange, S., Henry, P., Geli, L., Tryon, M.D., Natal'in, B., Sengör, A.M.C., Özeren, M.S., Çagatay, M.N.

“…Fluids venting from the submarine portion of the Marmara Main Fault (part of the North Anatolian Fault system, Turkey) were sampled in Ti bottles deployed by…”
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Helium and Neon Abundances and Compositions in Cometary Matter by Marty, Bernard, Palma, Russell L., Pepin, Robert O., Zimmermann, Laurent, Schlutter, Dennis J., Burnard, Peter G., Westphal, Andrew J., Snead, Christopher J., Bajt, Saša, Becker, Richard H., Simones, Jacob E.

“…Materials trapped and preserved in comets date from the earliest history of the solar system. Particles captured by the Stardust spacecraft from comet 81P/Wild…”
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Eruption dynamics of “popping rock” from vesicle morphologies by Burnard, Peter

“…The textures, elongation parameters and size distribution of vesicles frozen in a section of “popping rock” glass are presented. These show that the vesicles…”
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The Nature, Origin and Regional Implications of the Nampundwe Ores, Southern Zambia by Burnard, Peter G

“…The Nampundwe Deposit is situated 45 km west of Lusaka (on 27°24'E, 15°33'S), in the southern Province of Zambia. Eight orebodies are present at Nampundwe,…”
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