Mare NectarisMare Nectaris
(the "sea of nectar") is a lunar mare
located within the Nectaris basin on the lunar nearside. The basin material is of the Nectarian
and Lower Imbrian
epochs, with the mare material of the Upper Imbrian
epoch. The crater Theophilus on the northeastern side of the mare is of the Eratosthenian
epoch. Thus, the crater is younger than the mare to its southeast. Montes Pyrenaeus
borders the mare to the west.
The mare material is approximately 1000m in depth. Enough subsistence has occurred to open a few arcuates grabens on the western margin of the mare. The large crater near the south center of the mare is Rosse.