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- W3195237954 abstract "The origin of volatile element depletion in terrestrial planets and meteorites relative to a solar composition represented by CI carbonaceous chondrites remains an unsolved problem. The isotope compositions of moderately volatile elements may offer the possibility to distinguish between the various processes that may have caused this depletion (e.g., partial condensation or partial evaporation). We report high precision Sn isotope measurements in carbonaceous chondrites and ordinary chondrites and the results are reported as δ124/116Sn. Four carbonaceous chondrites (Orgueil CI, Murchison CM2, NWA 5240 CV3 and Allende CV3) show a limited range in δ124/116Sn (–0.02‰ to 0.11‰) with an average value of 0.04 ± 0.11‰ (2 s.d.) for a wide range of Sn concentrations (0.63 ppm to 1.57 ppm). The absence of Sn isotope fractionation among carbonaceous chondrites suggests that volatile depletion may have taken place under thermodynamic equilibrium conditions between solid and vapor in the Solar Nebula. Alternatively, the mixing of two components, a volatile-free component containing no or little Sn and a volatile-rich component could explain this trend. This latter hypothesis is consistent with the overall trace element pattern found in carbonaceous chondrites, showing a constant relative abundance when normalized to CI chondrites for the most volatile elements. In contrast with carbonaceous chondrites, ordinary chondrites exhibit a larger range of Sn isotope compositions (δ124/116Sn from –2.02‰ to 0.64‰), but neither the degree of metamorphism (3–6) nor the group (H, L, LL) is correlated with Sn isotopic variations, or with the Sn contents (range 0.20 to 1.44 ppm). Nineteen out of twenty-one ordinary chondrites are enriched in light Sn isotopes compared with carbonaceous chondrites and the bulk silicate Earth. The trace element patterns of volatile elements in ordinary chondrites suggest that equilibrated ordinary chondrites have been disturbed by parent body processes related to metamorphic or shock overprinting but also inherited isotope fractionation found in unequilibrated ordinary chondrites. Last, the isotope composition of the bulk silicate Earth (BSE) indicates that the volatile element depletion observed in the Earth took place in conditions perhaps similar to those of carbonaceous chondrites, as a simple model describing the effect of Earth’s core formation on Sn isotopes shows that the Sn isotope composition of the bulk Earth is identical to that of the BSE and of carbonaceous chondrites." @default.
- W3195237954 created "2021-08-30" @default.
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- W3195237954 date "2021-11-01" @default.
- W3195237954 modified "2023-09-25" @default.
- W3195237954 title "The Sn isotope composition of chondrites: Implications for volatile element depletion in the Solar System" @default.
- W3195237954 cites W1654459308 @default.
- W3195237954 cites W1708336720 @default.
- W3195237954 cites W171925250 @default.
- W3195237954 cites W1963551438 @default.
- W3195237954 cites W1963632990 @default.
- W3195237954 cites W1965515421 @default.
- W3195237954 cites W1970528475 @default.
- W3195237954 cites W1973752788 @default.
- W3195237954 cites W1977082362 @default.
- W3195237954 cites W1979491806 @default.
- W3195237954 cites W1982726865 @default.
- W3195237954 cites W1984966997 @default.
- W3195237954 cites W1987771923 @default.
- W3195237954 cites W1988753224 @default.
- W3195237954 cites W1989034547 @default.
- W3195237954 cites W1998305176 @default.
- W3195237954 cites W2000224549 @default.
- W3195237954 cites W2001948948 @default.
- W3195237954 cites W2002629165 @default.
- W3195237954 cites W2002783292 @default.
- W3195237954 cites W2005292550 @default.
- W3195237954 cites W2005384095 @default.
- W3195237954 cites W2007512260 @default.
- W3195237954 cites W2011740766 @default.
- W3195237954 cites W2020265935 @default.
- W3195237954 cites W2020342771 @default.
- W3195237954 cites W2021202828 @default.
- W3195237954 cites W2023227088 @default.
- W3195237954 cites W2024812686 @default.
- W3195237954 cites W2027155289 @default.
- W3195237954 cites W2028327646 @default.
- W3195237954 cites W2028389006 @default.
- W3195237954 cites W2028426026 @default.
- W3195237954 cites W2036766909 @default.
- W3195237954 cites W2037277982 @default.
- W3195237954 cites W2039965622 @default.
- W3195237954 cites W2040020611 @default.
- W3195237954 cites W2040447742 @default.
- W3195237954 cites W2041096913 @default.
- W3195237954 cites W2041097261 @default.
- W3195237954 cites W2044072065 @default.
- W3195237954 cites W2045948254 @default.
- W3195237954 cites W2053172845 @default.
- W3195237954 cites W2054103504 @default.
- W3195237954 cites W2055958564 @default.
- W3195237954 cites W2056455556 @default.
- W3195237954 cites W2059658245 @default.
- W3195237954 cites W2059702549 @default.
- W3195237954 cites W2062049384 @default.
- W3195237954 cites W2062889876 @default.
- W3195237954 cites W2065430131 @default.
- W3195237954 cites W2065646049 @default.
- W3195237954 cites W2068036209 @default.
- W3195237954 cites W2069873401 @default.
- W3195237954 cites W2070629832 @default.
- W3195237954 cites W2072428380 @default.
- W3195237954 cites W2073212249 @default.
- W3195237954 cites W2074260509 @default.
- W3195237954 cites W2074411833 @default.
- W3195237954 cites W2074574941 @default.
- W3195237954 cites W2075991675 @default.
- W3195237954 cites W2080016509 @default.
- W3195237954 cites W2083459544 @default.
- W3195237954 cites W2084978735 @default.
- W3195237954 cites W2085120140 @default.
- W3195237954 cites W2086594447 @default.
- W3195237954 cites W2089846359 @default.
- W3195237954 cites W2096471541 @default.
- W3195237954 cites W2102530828 @default.
- W3195237954 cites W2103512218 @default.
- W3195237954 cites W2104816446 @default.
- W3195237954 cites W2112485128 @default.
- W3195237954 cites W2119330075 @default.
- W3195237954 cites W2119345600 @default.
- W3195237954 cites W2127547520 @default.
- W3195237954 cites W2140722261 @default.
- W3195237954 cites W2164044314 @default.
- W3195237954 cites W2164109470 @default.
- W3195237954 cites W2194027027 @default.
- W3195237954 cites W2410711035 @default.
- W3195237954 cites W2468802621 @default.
- W3195237954 cites W2478962634 @default.
- W3195237954 cites W2520557910 @default.
- W3195237954 cites W2555544715 @default.
- W3195237954 cites W2582940684 @default.
- W3195237954 cites W2607051977 @default.
- W3195237954 cites W2626144397 @default.
- W3195237954 cites W2756178671 @default.