Machaut is a volcanically modified crater. The floor was covered by volcanic deposits after the initial impact as shown by the partially submerged crater ("ghost crater") in the interior. [4]
^"Machaut". Gazetteer of Planetary Nomenclature. IAU/USGS/NASA. Retrieved 13 August 2022.
^Davies, M. E.; Dwornik, S. E.; Gault, D. E.; Strom, R. G. (1978). Atlas of Mercury. National Aeronautics and Space Administration. pp. 1–128. ISBN978-1-114-27448-8. Special Publication SP-423.
^Chapman, C. R., Baker, D. M. H., Barnouin, O. S., Fassett, C. I., Marchi, S., Merline, W. J., Ostrach, L. R., Prockter, L. M., and Strom, R. G., 2018. Impact Cratering of Mercury. In Mercury: The View After MESSENGER edited by Sean C. Solomon, Larry R. Nittler, and Brian J. Anderson. Cambridge Planetary Science. Chapter 9, Figure 9.13.