[1] Whitten, Jennifer L.; Head, James W. (2015). Lunar cryptomaria: Physical characteristics, distribution, and implications for ancient volcanism. Icarus, 247, 150-171. DOI: https://doi.org/10.1016/j.icarus.2014.09.031

[2] Whitten, Jennifer; Head, James W. (2015). Lunar cryptomaria: Mineralogy and composition of ancient volcanic deposits. Planetary and Space Science, 106, 67-81. DOI: https://doi.org/10.1016/j.pss.2014.11.027

[3] Pasckert, Jan Hendrik; Hiesinger, Harald; van der Bogert, Carolyn H. (2018). Lunar farside volcanism in and around the South Pole–Aitken basin. Icarus, 299, 538-562. DOI: https://doi.org/10.1016/j.icarus.2017.07.023

[4] Wang, Xing; Head, James W.; Chen, Yuan; Zhao, Feiyue; Kreslavsky, Mikhail A.; Wilson, Lionel; Qian, Yuqi; Liu, Jianjun; Li, Chunlai (2024). Lunar Farside South Pole‐Aitken Basin Interior: Evidence for More Extensive Central Cryptomaria in the South Pole‐Aitken Compositional Anomaly (SPACA). Journal of Geophysical Research: Planets, 129, e2023JE008176. DOI: https://doi.org/10.1029/2023JE008176

[5] Chuang, F. C.; Richardson, M. D.; Whitten, J. L.; Moriarty, D. P.; Domingue, D. L. (2025). Application of Machine Learning Techniques to Distinguish between Mare, Cryptomare, and Light Plains in Central Lunar South Pole-Aitken Basin. The Planetary Science Journal, 6, 35. DOI: https://doi.org/10.3847/PSJ/ada4a6

[6] Izquierdo, Kristel; Sori, Michael M.; Checketts, Brianne; Hampton, Isabella; Johnson, Brandon C.; Soderblom, Jason M. (2024). Global Distribution and Volume of Cryptomare and Visible Mare on the Moon From Gravity and Dark Halo Craters. Journal of Geophysical Research: Planets, 129, e2023JE007867. DOI: https://doi.org/10.1029/2023JE007867

[7] Moriarty, D. P.; Watkins, R. N.; Valencia, S. N.; Kendall, J. D.; Evans, A. J.; Dygert, N.; Petro, N. E. (2021). Evidence for a Stratified Upper Mantle Preserved Within the South Pole‐Aitken Basin. Journal of Geophysical Research: Planets, 126, e2020JE006589. DOI: https://doi.org/10.1029/2020JE006589

[8] Wang, X.; Head III, J. W.; Wu, B.; Liu, J. (2026). The South Pole-Aitken Basin Interior, Thorium Distribution, and Implications for Chang’E-6 Samples. EPSC Abstracts, 19, EPSC2026-624. Conference abstract. DOI: https://doi.org/10.5194/epsc2026-624

[9] Avdellidou, C.; Price, M. C.; Delbo, M.; Ioannidis, P.; Cole, M. J. (2016). Survival of the impactor during hypervelocity collisions – I. An analogue for low porosity targets. Monthly Notices of the Royal Astronomical Society, 456, 2957-2965. DOI: https://doi.org/10.1093/mnras/stv2844

[10] Avdellidou, C.; Price, M. C.; Delbo, M.; Cole, M. J. (2017). Survival of the impactor during hypervelocity collisions - II. An analogue for high-porosity targets. MNRAS, 464, 734-738. DOI: https://doi.org/10.1093/mnras/stw2381

[11] Zhu, Meng-Hua; Artemieva, Natalia; Morbidelli, Alessandro; Yin, Qing-Zhu; Becker, Harry; Wünnemann, Kai (2019). Reconstructing the late-accretion history of the Moon. Nature, 571, 226-229. DOI: https://doi.org/10.1038/s41586-019-1359-0

[12] Giguere, T. A.; Hawke, B. Ray; Gaddis, L. R.; Blewett, D. T.; Gillis‐Davis, J. J.; Lucey, P. G.; Smith, G. A.; Spudis, P. D.; Taylor, G. J. (2006). Remote sensing studies of the Dionysius region of the Moon. Journal of Geophysical Research: Planets, 111, E06009. DOI: https://doi.org/10.1029/2005JE002639

[13] Xu, X.; Ye, L.; Zhang, D.; Kang, Z.; Hu, T.; van der Bogert, C. H.; Hiesinger, H. (2024). Identification of Secondary Craters Based on Variations in Iron Composition on Lunar Mare. EPSC Abstracts, 17, EPSC2024-1145. Conference abstract. DOI: https://doi.org/10.5194/epsc2024-1145

[14] Lawrence, D. J.; Feldman, W. C.; Elphic, R. C.; Little, R. C.; Prettyman, T. H.; Maurice, S.; Lucey, P. G.; Binder, A. B. (2002). Iron abundances on the lunar surface as measured by the Lunar Prospector gamma‐ray and neutron spectrometers. Journal of Geophysical Research: Planets, 107(E12), 5130. DOI: https://doi.org/10.1029/2001JE001530

[15] Lawrence, D. J.; Elphic, R. C.; Feldman, W. C.; Prettyman, T. H.; Gasnault, O.; Maurice, S. (2003). Small‐area thorium features on the lunar surface. Journal of Geophysical Research: Planets, 108(E9), 5102. DOI: https://doi.org/10.1029/2003JE002050

[16] Daly, R. Terik; Schultz, Peter H. (2016). Delivering a projectile component to the vestan regolith. Icarus, 264, 9-19. DOI: https://doi.org/10.1016/j.icarus.2015.08.034

[17] Robbins, Stuart J. (2019). A New Global Database of Lunar Impact Craters >1–2 km: 1. Crater Locations and Sizes, Comparisons With Published Databases, and Global Analysis. Journal of Geophysical Research: Planets, 124, 871-892. DOI: https://doi.org/10.1029/2018JE005592

Jolliff, B. L.; Gibson, K. E.; Scholten, F. (2011). South Pole-Aitken Basin Interior: Topographic Expression of Mare, Cryptomare, and Nonmare Plains Units. 42nd LPSC, abstract 2774. Verified full abstract. No DOI located. https://www.lpi.usra.edu/meetings/lpsc2011/pdf/2774.pdf

Wang et al. (2023). Areal extents of the SPA central cryptomaria, v1.0. Dataset DOI: 10.5281/zenodo.8435503. Downloaded and processed.

Checketts, B.; Hampton, I. (2023). Dark halo craters data. Dataset DOI: 10.5281/zenodo.7823630. Downloaded and processed.

Chuang et al. (2025). Datasets for Application of Machine Learning Techniques to Distinguish Between Mare, Cryptomare and Light Plains in Central Lunar South Pole-Aitken Basin. DOI: 10.5281/zenodo.14612418. Metadata/file inventory verified; classification not recomputed.

IAU/USGS Gazetteer of Planetary Nomenclature, Moon centre-point shapefile, accessed 2026-10-04. https://planetarynames.wr.usgs.gov/GIS_Downloads . No DOI located.

LP Reduced Spectrometer Data Special Products. https://pds-geosciences.wustl.edu/missions/lunarp/reduced_special.html . Downloaded thoriumhd.txt and ironhd.dat; product documentation verified. The half-degree Th source is Lawrence, D. J.; Elphic, R. C.; Feldman, W. C.; Gasnault, O.; Genetay, I.; Maurice, S.; Prettyman, T. H. (2002). Small-Area Thorium Enhancements on the Lunar Surface. 33rd LPSC, abstract 1970. Full abstract verified; no DOI located. https://www.lpi.usra.edu/meetings/lpsc2002/pdf/1970.pdf