Mare Crisium [SEP] located on astronomical body
Mare Crisium
Mare Crisium (the "Sea of Crises") is a lunar mare located in the Moon's Crisium basin, just northeast of Mare Tranquillitatis. The basin is of the Pre-Imbrian period, 4.55 to 3.85 billion years ago.
Characteristics.
Mare Crisium is in diameter, and in area. It has a very flat floor, with a ring of wrinkle ridges ("dorsa") toward its outer boundaries. These are Dorsa Tetyaev, Dorsum Oppel, Dorsum Termier, and Dorsa Harker.
Mare Spumans
Mare Spumans (from Latin: "foaming sea") is a lunar mare located just south of Mare Undarum on the lunar near side. It is one of the many elevated lakes contained in the Crisium basin, surrounding Mare Crisium. The surrounding basin material is of the Nectarian epoch, while the mare basalt being of the Upper Imbrian epoch. The crater Petit (formerly ) is located on the western rim of the mare. This crater is white and surrounded by a well-defined ray system.