The vanadium isotopic composition of L ordinary chondrites

• 作者: Yongli Xue Chun-hui Li Yuhan Qi Chuantong Zhang Bingkui Miao Fang Huang
• 学科: 地球科学
• 关键词: V isotopes L ordinary chondrites Variation
• 年，卷（期）: 2022,（4）
• 页码范围: 501-508
• 页数: 7页
• 语种: 英文
• DOI: 10.1007/s11631-018-0279-2

摘要

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.