Ultra-depleted mantle source of basalts from the South Pole–Aitken basin

作者：Qin Zhou, Wei Yang, Zhu‐Yin Chu, Honggang Zhu, Saihong Yang, Xingguo Zeng, Dingshuai Xue, Lihui Jia, Guangliang Zhang, Hongbo Zhang, Yanhao Lin, Huijuan Zhang, Heng‐Ci Tian, Peng Peng, Dan‐Ping Zhang, Lixin Gu, Chunlai Li, Fu‐Yuan Wu · 发表于：Nature · 年份：2025 · DOI：10.1038/s41586-025-09131-7 · 被引用次数：32 · 研究领域：Geological and Geochemical Analysis、Planetary Science and Exploration、High-pressure geophysics and materials

(t) values (a measure of the neodymium isotopic composition) of 15.80 to 16.13. These characteristics indicate an ultra-depleted mantle, resulting from LMO crystallization and/or later depletion by melt extraction. The former scenario implies that the nearside and farside may possess an isotopically analogous depleted mantle endmember. The latter is probably related to the SPA impact, indicating that post-accretion massive impacts could have potentially triggered large-scale melt extraction of the underlying mantle. Either way, originating during the LMO or later melt extraction, the ultra-depleted mantle beneath the SPA basin offers a deep observational window into early lunar crust-mantle differentiation.