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Lunar Highland Preserves Meteoritic-iron-rich Materials in the Earth–Moon System
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Lunar Highland Preserves Meteoritic-iron-rich Materials in the Earth–Moon System
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Journal Article
Lunar Highland Preserves Meteoritic-iron-rich Materials in the Earth–Moon System
2025
Overview
Meteoritic impacts over 4.5 billion yr have modified the composition and properties of the Earth and Moon’s surfaces. The low-iron lunar highlands (FeO ∼ 5 wt%) may provide insights into the contribution of meteoritic iron to the Earth–Moon system. However, it remains unclear whether the lunar highlands preserve the composition, distribution, and impact of the meteoritic iron. In this study, we identified 30 meteoritic iron-rich impact melts in the lunar highlands. These melts are characterized by young ages (mostly Copernican), low TiO2 content (<1 wt%), and relatively high FeO (>5–10 wt%). Importantly, the distributions of these impact melts are spatially correlated with the distribution of iron anomalies. This work provides geological evidence for the preservation of meteoritic iron in the lunar highlands. We also proposed that such meteoritic iron could represent potential sources of impact-related Fe–Ni anomalies on the Earth, such as Sudbury and Morokweng deposits.
