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The vanadium isotopic composition of L ordinary chondrites 被引量:3
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作者 Yongli Xue Chun-hui Li +3 位作者 Yuhan Qi Chuantong Zhang Bingkui Miao Fang Huang 《Acta Geochimica》 EI CAS CSCD 2018年第4期501-508,共8页
Stable isotopic data of meteorites are critical for understanding the evolution of terrestrial planets. In this study, we report high-precision vanadium (V) isotopic compositions of 11 unequilibrated and equilibrate... Stable isotopic data of meteorites are critical for understanding the evolution of terrestrial planets. In this study, we report high-precision vanadium (V) isotopic compositions of 11 unequilibrated and equilibrated L chondrites. Our samples show an average δ^51v of -1.25‰ ±0.38‰ (2SD, n = 11), which is ,- 0.5‰ lighter than that of the bulk silicate Earth constrained by mantle peridotites. Isotopic fractionation in type 3 ordinary chondrites vary from - 1.76‰ to - 1.29‰, whereas the δ^51V of equilibrated chondrites vary from - 1.37‰ to -1.08‰. 551V of L chondrites do not correlate with thermal metamorphism, shock stage, or weathering degree. Future studies are required to explore the reason for V isotope variation in the solar system. 展开更多
关键词 v isotopes L ordinary chondrites vARIATION
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