title: Endogenetic craters interpreted from crater counts on the inner wall of copernicus.
abstract: Collapse craters formed in terrestrial basalt flows exhibit size-frequency distributions that are similar to distributions for craters located in terraces in the inner wall of the lunar crater Copernicus. These distributions and surface morphology suggest that the interior terraces are basalt lava flows containing collapse craters as well as impact craters.
authors.forename: R
authors.initials: R
authors.lastname: Greeley
authors.forename: D E
authors.initials: DE
authors.lastname: Gault