The vanadium isotopic composition of L ordinary chondrites |
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| Authors: | Yongli Xue Chun-hui Li Yuhan Qi Chuantong Zhang Bingkui Miao Fang Huang |
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| Institution: | 1.Institution of Meteorites and Planetary Materials Research,Guilin University of Technology,Guilin,China;2.Key Laboratory of Planetary Geological Evolution at Universities of Guangxi Province,Guilin University of Technology,Guilin,China;3.Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences,University of Science and Technology of China,Hefei,China |
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| Abstract: | 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 δ51V 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 δ51V of equilibrated chondrites vary from ??1.37‰ to ??1.08‰. δ51V 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. |
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