Cheleken Formation
type: Concept
preferred label: سازند چلکن @fa
related: South Caspian Basin

Aqchegil Formation
type: Concept
preferred label: سازند آقچه‌گیل @fa
related: South Caspian Basin

Apsheron Formation
type: Concept
preferred label: سازند آپشرون @fa
related: South Caspian Basin

South Caspian Basin
type: Concept
broader: Iran
preferred label: حوضه خزر جنوبی @fa
related: Aqchegil Formation
related: Apsheron Formation
related: Cheleken Formation

Iran
type: Concept
narrower: South Caspian Basin
preferred label: ایران @fa