Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Kayo Matsubara"'
Publikováno v:
Geochimica et Cosmochimica Acta. 59:2105-2113
Concentrations and isotopic ratios of noble gases have been determined for two martian meteorites, ALH84001 and ALH77005. ALH84001, a newly recognized martian orthopyroxenite, has a high 129 Xe 132 Xe ratio (≈2.1), which is similar to that observed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c55802343606fe2e500444bb31b33ce9
https://doi.org/10.1016/0016-7037(95)00130-1
https://doi.org/10.1016/0016-7037(95)00130-1
Autor:
Jun-ichi Matsuda, Kayo Matsubara
Publikováno v:
GEOCHEMICAL JOURNAL. 29:293-300
In order to study Ne diffusion into glasses, we measured noble gas concentrations in obsidian samples which were degassed in a vacuum at 800°C and subsequently heated in air at various temperatures and heating times. Neon was concentrated in samples
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c33b31f9df5b146b113d696064df4591
https://doi.org/10.2343/geochemj.29.293
https://doi.org/10.2343/geochemj.29.293
Publikováno v:
Meteoritics. 28:586-589
— Heavy noble gas concentrations in tektites (splash-form type) are considerably lower than those in impact glasses. This can not be explained only by high formation temperatures for tektites, as might be expected from low concentrations of water a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b9977871c4e8de4352eff53d5de09bcf
https://doi.org/10.1111/j.1945-5100.1993.tb00282.x
https://doi.org/10.1111/j.1945-5100.1993.tb00282.x
Publikováno v:
Geochimica et Cosmochimica Acta. 55:2951-2955
Elemental abundances of noble gases and isotopic compositions of Ne and Ar have been determined in seven Aouelloul impact glasses, four Zhamanshin impact glasses, and one Libyan Desert glass sample. Similar to most other natural terrestrial glasses,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b31c0cd3e7db4cf495703344cf8a410
https://doi.org/10.1016/0016-7037(91)90460-m
https://doi.org/10.1016/0016-7037(91)90460-m
Publikováno v:
Chemical Geology: Isotope Geoscience section. 86:287-293
Noble gases in cherts of various origins were measured by means of the stepwise heating technique. The elemental abundance patterns of noble gases in the samples showed monotonic fractionation from 20 Ne to 132 Xe relative to the atmosphere; this pat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8740e81ec500b527cdb9d4cac8d453bd
https://doi.org/10.1016/0168-9622(91)90011-k
https://doi.org/10.1016/0168-9622(91)90011-k
Publikováno v:
Geophysical Research Letters. 15:657-660
We measured noble gases in amorphous silica of geothermal origin. These samples were formed by precipitation from geothermal water in neutral pH, and by the leaching of rocks in acid hot springs. The concentration of 132Xe has a negative correlation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3425119e2e92c005919a892b96cb7ec5
https://doi.org/10.1029/gl015i007p00657
https://doi.org/10.1029/gl015i007p00657
Autor:
Kayo Matsubara, Jun-ichi Matsuda
Publikováno v:
Geophysical Research Letters. 16:81-84
Elemental abundances of noble gases in siliceous microfossils from deep-sea sediments were determined employing the stepwise heating technique. Almost all the Ar and about 80% of the total Kr were released in the lowest temperature fraction of 800°C
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a3665196742e040030ce2d5cad2b27d4
https://doi.org/10.1029/gl016i001p00081
https://doi.org/10.1029/gl016i001p00081
Publikováno v:
Geochimica et Cosmochimica Acta. 53:3025-3033
We have determined noble gas concentrations in seven obsidians and a Darwin glass by stepwise heating. The pattern of noble gases relative to air showed that Ne was enriched in most of the obsidians and Darwin glass. The release temperatures of Ne we
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87a38df715fde7235a221a76e534049b
https://doi.org/10.1016/0016-7037(89)90178-6
https://doi.org/10.1016/0016-7037(89)90178-6