Geological evidence for extensive basin ejecta as plains terrains in the Moon’s South Polar Region

Le Qiao (), Luyuan Xu, James W. Head, Jian Chen, Yuzheng Zhang, Bo Li and Zongcheng Ling
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Le Qiao: Shandong University
Luyuan Xu: Macau University of Science and Technology
James W. Head: Brown University
Jian Chen: Shandong University
Yuzheng Zhang: Shandong University
Bo Li: Shandong University
Zongcheng Ling: Shandong University

Nature Communications, 2024, vol. 15, issue 1, 1-10

Abstract: Abstract Water ice and other volatiles that accumulated in the Moon’s polar regions are among the top priority targets for lunar exploration, due to their significances in both lunar geology and extraterrestrial resource utilization. Locating suitable landing sites and determining the provenance of sampled/measured surface materials are critical for future landed missions. Here, we map over 800 sites of plains terrains in the Moon’s south polar region, with a total surface area of ~46,000 km2. Orbital measurements and analog studies show that most of these plains have apparently higher albedo and lower iron content than volcanic mare plains, suggesting an origin of ejecta-induced debris flows from distant impact craters, especially from the Schrödinger basin. Our findings suggest that the entire lunar south polar region probably have experienced contributions from distant basin materials. We recommend these plains as priority landing sites for future exploration of lunar polar volatiles and early bombardment history.

Date: 2024
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DOI: 10.1038/s41467-024-50155-w

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