Assertion: ekofisk field | /r/HasProperty | north-south trending anticline
Facets:
value: with a central graben
type: OTHER
Source sentences:
text: The Ekofisk field is a north-south trending anticline, with a central graben, forming a structure that is 49 km2 (19 sq mi) in area, with 244 m (801 ft) of vertical closure and a hydrocarbon column 305 m (1,001 ft) long, formed by Permian Zechstein salt movement in the form of salt pillows.