Changes

==Introduction==

==Introduction==

The Sirt Basin, the most prolific oil basin in Africa, contains 89% of Libya’s reserves and 16 giant oil fields. [[Reservoir rock]]s range in age from Precambrian to Eocene. The Upper Cretaceous Sirt [[Shale]] is the major source rock. It represents a thick sequence that accumulated in major [[graben]]s while [[shallow-marine carbonate]]s and reefs collected on adjacent horsts and platforms to form major reservoir rocks.

The Sirt Basin, the most prolific oil basin in Africa, contains 89% of Libya’s reserves and 16 giant oil fields. [[Reservoir rock]]s range in age from Precambrian to Eocene. The Upper Cretaceous Sirt [[Shale]] is the major source rock. It represents a thick sequence that accumulated in major [[graben]]s while shallow-marine [[carbonate]]s and reefs collected on adjacent horsts and platforms to form major reservoir rocks.

The Ghadamis intracratonic sag basin contains up to 5200 m (17,060.4 ft) of Paleozoic through Mesozoic clastics. The estimated recoverable reserves are more than 3 billion barrels of oil in the Upper Silurian Acacus [[Sandstone]] and Devonian Tadrart and Ouan Kasa Sandstones. The Devonian and Silurian Shales are the basin’s major source rocks; the latter is the most important.

The Ghadamis intracratonic sag basin contains up to 5200 m (17,060.4 ft) of Paleozoic through Mesozoic clastics. The estimated recoverable reserves are more than 3 billion barrels of oil in the Upper Silurian Acacus [[Sandstone]] and Devonian Tadrart and Ouan Kasa Sandstones. The Devonian and Silurian Shales are the basin’s major source rocks; the latter is the most important.