thumb|A map of Iapetus with all official surface features labeled
Most Iapetian geological features are named after characters and locations in the Old French epic poem The Song of Roland, specifically the English translation by Dorothy L. Sayers.
Craters
Named impact craters are:
{| class="wikitable"
|-
! Name !! Coordinates !! Diameter (km) !! Approval Date !! Namesake !! Pronunciation !! Refs
|-
| Abisme || || 767.74 || August 16, 2013 || A Saracen lord, killed by Archbishop Turpin || ||
|-
| Acelin || || 38.0 || August 5, 2008 || Aceline of Gascony || ||
|-
| Adelroth || || 57.0 || August 5, 2008 || Marsilion's nephew || ||
|-
| Almeric || || 43.0 || 1982 || Almeric, one of the Twelve Peers || ||
|-
| Anseïs || || 48.0 || August 5, 2008 || One of the Twelve Peers || ||
|-
| Astor || || 122.0 || August 5, 2008 || A French baron || ||
|-
| Baligant || || 66.0 || 1982 || Baligant || ||
|-
| Basan || || 76.0 || 1982 || Bason || ||
|-
| Basbrun || || 80.0 || August 5, 2008 || Charlemagne's officer || ||
|-
| Basile || || 6.0 || August 5, 2008 || French baron || ||
|-
| Berenger || || 84.0 || 1982 || Bérengier || ||
|-
| Besgun || || 56.0 || 1982 || Besgun || ||
|-
| Bevon || || 48.0 || August 5, 2008 || French baron || ||
|-
| Bramimond || || 200.0 || August 5, 2008 || Bramimonde || ||
|-
| Charlemagne || || 95.0 || 1982 || Charlemagne || ||
|-
| Clarin || || 84.0 || August 5, 2008 || Saracen lord || ||
|-
| Climborin || || 49.0 || August 5, 2008 || Saracen lord || ||
|-
| Corsablis || || 73.0 || August 5, 2008 || Saracen lord || ||
|-
| Dapamort || || 49.0 || August 5, 2008 || Saracen king || ||
|-
| Engelier || || 504.0 || August 5, 2008 || One of the Twelve Peers || ||
|-
| Escremiz || || 0.06 || August 5, 2008 || Escremiz of Valterne || ||
|-
| Eudropin || || 42.0 || August 5, 2008 || Saracen lord || ||
|-
| Falsaron || || 424.0 || August 5, 2008 || Brother of King Marsilion || ||
|-
| Ganelon || || 230.0 || August 5, 2008 || Ganelon || ||
|-
| Garlon || || 47.0 || August 5, 2008 || Saracen lord || ||
|-
| Geboin || || 81.0 || 1982 || Geboin || ||
|-
| Gerin || || 445.0 || August 5, 2008 || One of the Twelve Peers || ||
|-
| Godefroy || || 63.0 || 1982 || Godefroy || ||
|-
| Grandoyne || || 65.0 || 1982 || Grandoyne || ||
|-
| Hamon || || 96.0 || 1982 || Hamon || ||
|-
| Ivon || || 100.0 || August 5, 2008 || One of the Twelve Peers || ||
|-
| Johun || || 64.0 || August 5, 2008 || Johun of Outremer; Saracen lord || ||
|-
| Jurfaleu || || 107.0 || August 5, 2008 || Son of Marsilion || ||
|-
| Lorant || || 44.0 || 1982 || Lorant || ||
|-
| Malprimis || || 377.0 || August 5, 2008 || Saracen lord || ||
|-
| Malun || || 121.0 || August 5, 2008 || Saracen lord || ||
|-
| Margaris || || 75.0 || August 5, 2008 || Saracen lord || ||
|-
| Marsilion || || 136.0 || 1982 || Marsilion || ||
|-
| Matthay || || 58.0 || August 5, 2008 || Saracen lord || ||
|-
| Milon || || 119.0 || 1982 || Milon || ||
|-
| Naimon || || 244.0 || August 5, 2008 || Naimon || ||
|-
| Nevelon || || 49.0 || August 5, 2008 || Shares command of Charlemagne's sixth division || ||
|-
| Ogier || || 100.0 || 1982 || Ogier the Dane || ||
|-
| Oliver || || 113.0 || 1982 || Olivier || ||
|-
| Othon || || 86.0 || 1982 || Othon || ||
|-
| Pinabel || || 83.0 || August 5, 2008 || Pinabel || ||
|-
| Priamon || || 17.0 || August 5, 2008 || Saracen lord || ||
|-
| Rabel || || 91.0 || August 5, 2008 || French baron || ||
|-
| Roland || || 144.0 || 1982 || Roland || ||
|-
| Rugis || || 19.0 || August 5, 2008 || Saracen lord || ||
|-
| Samson || || 33.0 || August 5, 2008 || One of the Twelve Peers || ||
|-
| Thierry || || 110.0 || August 5, 2008 || French knight, friend of Roland || ||
|-
| Tibbald || || 160.0 || August 5, 2008 || Tibbald of Reims || ||
|-
| Timozel || || 58.0 || August 5, 2008 || Saracen lord || ||
|-
| Torleu || || 8.0 || August 5, 2008 || Leader in Baligant's army || ||
|-
| Turgis || || 580.0 || August 5, 2008 || Saracen baron || ||
|-
| Turpin || || 87.0 || 1982 || Turpin || ||
|-
| Valdebron || || 49.0 || August 5, 2008 || Saracen lord || ||
|}
Montes
A mons , pl. montes , is a mountain.
{| class="wikitable"
|-
! Name !! Coordinates !! Diameter (km) !! Approval Date !! Namesake !! Pronunciation !! Refs
|-
| Carcassone Montes || || 740.0 || August 5, 2008 || Carcassonne, France || ||
|-
| Cordova Mons || || 85.0 || August 5, 2008 || Córdoba, Spain || ||
|-
| Gayne Mons || || 65.0 || August 5, 2008 || Gayne, Spain || ||
|-
| Haltile Mons || || 45.0 || August 5, 2008 || Haltile, Spain || ||
|-
| Seville Mons || || 69.0 || August 5, 2008 || Seville, Spain || ||
|-
| Sorence Mons || || 46.0 || August 5, 2008 || Castle of Pinabel || ||
|-
| Toledo Montes || || 1100.0 || August 5, 2008 || Toledo, Spain || ||
|-
| Tortelosa Montes || || 294.0 || August 5, 2008 || Tortelosa, Spain || ||
|-
| Valterne Mons || || 50.0 || August 5, 2008 || Valterne, Spain || ||
|}
Regiones
There is one named Iapetian regio (area of distinct albedo difference), Cassini:
{| class="wikitable"
|-
! Name !! Coordinates !! Diameter (km) !! Approval Date !! Namesake !! Pronunciation !! Refs
|-
| Cassini Regio || || 0 || 1982 || Giovanni Cassini, discoverer of Iapetus || ||
|}
Terrae
There are two named Iapetian terrae (large 'land' masses).
{| class="wikitable"
|-
! Name !! Coordinates !! Diameter (km) !! Approval Date !! Namesake !! Pronunciation !! Refs
|-
| Roncevaux Terra || || 1284.0 || 1982 || Battle of Roncevaux Pass || ||
|-
| Saragossa Terra || || 2300.0 || August 5, 2008 || Saragossa, Spain || ||
|}
The adjectival form of Roncevaux is Roncesvallian.
References
- Mackey & Mackey, 1922, The Pronunciation of 10,000 Proper Names, Dodd, Mead & Co., New York
External links
- USGS: Iapetus nomenclature
- JPL: Iapetus Global Maps