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Description
| - Refractory inclusions in primitive meteorites are the oldest objects formed in the Solar System. They exhibit large mass-dependent isotopic effects in many elements, including Si, Mg and Ca, indicative of their complex origin. We report data for both mass dependent (d) and mass-independent (e) Ca isotopic effects, and rare earth element (REE) abundances in six refractory inclusions from the Allende meteorite. Data reveal mass-dependent Ca isotopic effects in these refractory inclusions, with d44/40Ca ranging from -5.60 to +0.35, which are significantly lower than that of the bulk silicate Earth. Importantly, d44/40Ca is correlated with REE patterns: refractory inclusions with Group II REE patterns have lighter Ca isotope compositions compared to those with Group I REE patterns. The studied refractory inclusions form negative 44Ca/40Ca-Tm/Er trends, implying segregation of up to 3% of an ultrarefractory evaporation residue from a chondritic reservoir prior to the formation of refractory inclusions.
- Refractory inclusions in primitive meteorites are the oldest objects formed in the Solar System. They exhibit large mass-dependent isotopic effects in many elements, including Si, Mg and Ca, indicative of their complex origin. We report data for both mass dependent (d) and mass-independent (e) Ca isotopic effects, and rare earth element (REE) abundances in six refractory inclusions from the Allende meteorite. Data reveal mass-dependent Ca isotopic effects in these refractory inclusions, with d44/40Ca ranging from -5.60 to +0.35, which are significantly lower than that of the bulk silicate Earth. Importantly, d44/40Ca is correlated with REE patterns: refractory inclusions with Group II REE patterns have lighter Ca isotope compositions compared to those with Group I REE patterns. The studied refractory inclusions form negative 44Ca/40Ca-Tm/Er trends, implying segregation of up to 3% of an ultrarefractory evaporation residue from a chondritic reservoir prior to the formation of refractory inclusions. (en)
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Title
| - Calcium isotopic ratios and rare earth element abundances in refractory inclusions from Allende CV3 chondrite
- Calcium isotopic ratios and rare earth element abundances in refractory inclusions from Allende CV3 chondrite (en)
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skos:prefLabel
| - Calcium isotopic ratios and rare earth element abundances in refractory inclusions from Allende CV3 chondrite
- Calcium isotopic ratios and rare earth element abundances in refractory inclusions from Allende CV3 chondrite (en)
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skos:notation
| - RIV/60460709:41330/12:51803!RIV13-MSM-41330___
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http://linked.open...avai/predkladatel
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http://linked.open...avai/riv/aktivita
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http://linked.open...avai/riv/aktivity
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http://linked.open...iv/cisloPeriodika
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http://linked.open...vai/riv/dodaniDat
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http://linked.open...aciTvurceVysledku
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http://linked.open.../riv/druhVysledku
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http://linked.open...iv/duvernostUdaju
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http://linked.open...titaPredkladatele
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http://linked.open...dnocenehoVysledku
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http://linked.open...ai/riv/idVysledku
| - RIV/60460709:41330/12:51803
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http://linked.open...riv/jazykVysledku
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http://linked.open.../riv/klicovaSlova
| - Calcium Isotopes Refractory Inclusions Allende Chondrite (en)
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http://linked.open.../riv/klicoveSlovo
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http://linked.open...odStatuVydavatele
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http://linked.open...ontrolniKodProRIV
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http://linked.open...i/riv/nazevZdroje
| - GEOCHIMICA ET COSMOCHIMICA ACTA
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http://linked.open...in/vavai/riv/obor
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http://linked.open...ichTvurcuVysledku
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http://linked.open...cetTvurcuVysledku
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http://linked.open...UplatneniVysledku
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http://linked.open...v/svazekPeriodika
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http://linked.open...iv/tvurceVysledku
| - Farkaš, Juraj
- Gang, Yu
- Petaev, Michail
- Shichun, Huang
- Stein, Jacobsen
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http://linked.open...ain/vavai/riv/wos
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issn
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