Intrinsic oxygen fugacity measurements of some Allende Type B inclusions
The intrinsic oxygen fugacities (IOFs) of two type B Ca-rich and Al-rich inclusions (CAI) from the Allende meteorite were measured using the solid-electrolyte double-cell IOF technique of Ulmer et al. (1976). The measurements were compared to calculated and experimentally extrapolated fO2 of type B...
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| Veröffentlicht in: | Geochimica et cosmochimica acta 1988-11, Vol.52, p.2707-2716 |
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| container_title | Geochimica et cosmochimica acta |
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| creator | Kozul, Jean M. Hewins, Roger H. Ulmer, Gene C. |
| description | The intrinsic oxygen fugacities (IOFs) of two type B Ca-rich and Al-rich inclusions (CAI) from the Allende meteorite were measured using the solid-electrolyte double-cell IOF technique of Ulmer et al. (1976). The measurements were compared to calculated and experimentally extrapolated fO2 of type B phases. It was found that the IOFs of the type B are 6-8 orders of magnitude more oxidized (H2/H2O = 1-10) than the canonical solar nebular gas (H2/H2O = 100-2000). It is suggested that some local fO2 enhancing mechanism, such as dust or gas concentrations, or the release of oxygen-rich vapors during CAI volatilization in the type B inclusions was in operation at temperatures higher than 700 C. |
| doi_str_mv | 10.1016/0016-7037(88)90039-7 |
| format | Article |
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(1976). The measurements were compared to calculated and experimentally extrapolated fO2 of type B phases. It was found that the IOFs of the type B are 6-8 orders of magnitude more oxidized (H2/H2O = 1-10) than the canonical solar nebular gas (H2/H2O = 100-2000). It is suggested that some local fO2 enhancing mechanism, such as dust or gas concentrations, or the release of oxygen-rich vapors during CAI volatilization in the type B inclusions was in operation at temperatures higher than 700 C.</description><identifier>ISSN: 0016-7037</identifier><identifier>EISSN: 1872-9533</identifier><identifier>DOI: 10.1016/0016-7037(88)90039-7</identifier><language>eng</language><publisher>Legacy CDMS</publisher><subject>580000 - Geosciences ; 640100 - Astrophysics & Cosmology ; CHEMICAL COMPOSITION ; CHEMICAL REACTIONS ; CHEMISTRY ; CHONDRITES ; CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ; COSMOLOGICAL MODELS ; CRYSTALLIZATION ; GEOCHEMISTRY ; GEOLOGIC HISTORY ; GEOSCIENCES ; INCLUSIONS ; Lunar And Planetary Exploration ; MATHEMATICAL MODELS ; METEORITES ; MINERALOGY ; NEBULAE ; OXIDATION ; PETROGENESIS ; PHASE TRANSFORMATIONS ; REDOX REACTIONS ; SOLAR NEBULA ; STONE METEORITES</subject><ispartof>Geochimica et cosmochimica acta, 1988-11, Vol.52, p.2707-2716</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,780,784,885,27924,27925</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/7164365$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Kozul, Jean M.</creatorcontrib><creatorcontrib>Hewins, Roger H.</creatorcontrib><creatorcontrib>Ulmer, Gene C.</creatorcontrib><title>Intrinsic oxygen fugacity measurements of some Allende Type B inclusions</title><title>Geochimica et cosmochimica acta</title><description>The intrinsic oxygen fugacities (IOFs) of two type B Ca-rich and Al-rich inclusions (CAI) from the Allende meteorite were measured using the solid-electrolyte double-cell IOF technique of Ulmer et al. 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(1976). The measurements were compared to calculated and experimentally extrapolated fO2 of type B phases. It was found that the IOFs of the type B are 6-8 orders of magnitude more oxidized (H2/H2O = 1-10) than the canonical solar nebular gas (H2/H2O = 100-2000). It is suggested that some local fO2 enhancing mechanism, such as dust or gas concentrations, or the release of oxygen-rich vapors during CAI volatilization in the type B inclusions was in operation at temperatures higher than 700 C.</abstract><cop>Legacy CDMS</cop><doi>10.1016/0016-7037(88)90039-7</doi><tpages>10</tpages></addata></record> |
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| identifier | ISSN: 0016-7037 |
| ispartof | Geochimica et cosmochimica acta, 1988-11, Vol.52, p.2707-2716 |
| issn | 0016-7037 1872-9533 |
| language | eng |
| recordid | cdi_osti_scitechconnect_7164365 |
| source | Elsevier ScienceDirect Journals Complete; NASA Technical Reports Server |
| subjects | 580000 - Geosciences 640100 - Astrophysics & Cosmology CHEMICAL COMPOSITION CHEMICAL REACTIONS CHEMISTRY CHONDRITES CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS COSMOLOGICAL MODELS CRYSTALLIZATION GEOCHEMISTRY GEOLOGIC HISTORY GEOSCIENCES INCLUSIONS Lunar And Planetary Exploration MATHEMATICAL MODELS METEORITES MINERALOGY NEBULAE OXIDATION PETROGENESIS PHASE TRANSFORMATIONS REDOX REACTIONS SOLAR NEBULA STONE METEORITES |
| title | Intrinsic oxygen fugacity measurements of some Allende Type B inclusions |
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