[The Cajun]

Looks like whatever hit it, hit it when it was already in a semi-molten state or whatever hit it was semi-molten.
Almost looks like molten lead or solder that was spread out.

[SunkenCiv]

The impact delivered a great deal of energy, and there’s a lot of metal (or quartz?) in the body. The dull-looking part of the surface is covered at least a meter deep in micrometeorites and ejecta dust from larger impacts. This suggests that these craters are fairly recent, but as the age of the moon is far from agreed-upon, there’s no way to estimate an actual age for the two large craters shown.