Most Iapetian geological features are named after characters and locations in The Song of Roland, specifically the English language translation by Dorothy L. Sayers.
Contents
Montes
A mons /ˈmɒnz/, pl. montes /ˈmɒntiːz/, is a mountain.
Regiones
There is one named Iapetian regio /ˈriːdʒioʊ/ (area of distinct albedo difference), Cassini:
The adjectival form is Cassinian /kəˈsɪniən/.
Terrae
There are two named Iapetian terrae /ˈtɛriː/ (large 'land' masses).
The adjectival form of Roncevaux is Roncesvallian.
Craters
Named impact craters are:
References
List of geological features on Iapetus Wikipedia(Text) CC BY-SA