The crater floor consists of complex structures, including ejecta deposits, impact melts and possibly units placed by effusive volcanism.

A portion of the rocky layer was deposited around the rim of the crater forming a rough ejecta deposit.

The crater lacks bright ejecta deposits and was imaged for the first time by the Voyager 2 spacecraft in January 1986.

The southeast rim and the eastern interior floor are marked by ejecta deposits that trend from southeast to northwest.

Portions of the surroundings show evidence of ejecta deposits from Maunder to the north (as shown by a number of secondary impacts).

They appear to overlay the lunar surface, superposed on top of craters and ejecta deposits, but impart no observable topography.

The ejecta deposit surrounding the craters appears very bright on the bright terrain.

Even though all the craters formed nearly simultaneously, it is difficult to discern any ejecta deposit on the dark terrain.

Such high impact rates would have fractured the crust to depths of several kilometers and left thick ejecta deposits across the planet's surface.

The basin interior is flooded with plains that clearly postdate the ejecta deposits.