To the southwest of Oresme is Chrétien, and to the northwest is the Mare Ingenii.

This crater was believed to have formed during the Nectarian epoch, about 4 billion years ago.

This crater has a considerably damaged outer rim that forms an uneven, irregular ring about the interior floor.

By contrast, the floor of Oresme is a relatively level, featureless surface that is marked only by a few tiny craters and low topological features.

[2] By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Oresme.