Lunar Mare Areas

There are eight well known lunar maria, but about two dozen smaller maria, laci, sinii and other small patches of mare basalt. Jim Whitford-Stark, in a paper published in 1982, reported on the areas of all the lunar maria. Here is his list of areas and his map of the distribution of these maria and dark patches. Note that the four entries with an asterisk (*) are not included in the total area because they are already included in the area for the South Pole-Aitken Basin. Mare depths are more poorly known than mare areas, but the best estimates are presented in the Lunar Basins spreadsheet.

Name

Area (km 2)

Procellarum, Oceanus

1,692,000

Imbrium, Mare

1,130,000

Tranquillitatis, Mare

436,000

Serenitatis, Mare

353,400

Frigoris, Mare

320,000

Australe, Mare

319,000

Crisium, Mare

228,000

Fecunditatis, Mare

220,000

South Pole-Aitken, Basin

190,725

Insularum, Mare

110,200

Humorum, Mare

84,500

Nectaris, Mare

84,100

Orientale, Basin

69,000

Marginis, Mare

64,900

Undarum & Spumans, Maria

55,000

Smythii, Mare

51,950

Somniorum, Lacus

47,300

Aestuum, Sinus

39,600

Ingenii, Mare*

36,000

Humboldtianum

35,475

Mortis, Lacus

34,000

Vaporum, Mare

32,400

Poincare, Basin*

23,750

Epidermiarum, Palus

21,150

Moscoviense, Mare

19,600

Apollo, Basin*

18,300

Medii, Sinus

18,000

Somnii, Palus

17,500

Tsiolkovsky-Stark, Basin

12,600

Putredinis, Palus

8.350

Anguis, Mare

8,150

Mendel-Rydberg, Basin

2,900

Freundlich-Sharanov, Basin

1,920

Schrodinger, Basin*

1,325

TOTAL

5,708,410

J. L..Whitford-Stark (1982) A Preliminary Analysis of Lunar Extra-Mare Basalts: Distribution, Compositions, Ages, Volumes, and Eruption Styles. The Moon and Planets 26, 323-338.