Palus Putredinis

In the southern part of this area is a rille system designated Rimae Archimedes. To the south is a prominent linear rille named Rima Bradley, and to the east is the Rima Hadley, which served as the landing site for Apollo 15, and the Rimae Fresnel. Just to the northwest of the Palus Putredinis midpoint is the nearly submerged crater Spurr. Luna 2 crashed in this area on September 13, 1959.

The basalts in this mare have been interpreted as rich in radioactive elements, but low in titanium. The mare basalts sampled at the Apollo 15 landing site are, "dominated by two low‐titanium varieties, the olivine‐normative basalts (3.30 Gyr) and the quartz‐normative basalts, which are slightly older (3.35 Gyr)". Volcanic glasses show ages of 3.30–3.60 Gyr.