Organic matter and metal contents within the Cretaceous rocks of the Slata-Guern Halfaya area, North-Central Tunisia: Implication for ore genesis

Chronological stages leading to the emplacement of ore in the Slata-Guern Halfaya ore districts. (A) Sequestration of metals by organic and inorganic matter in an anoxic environment. (B) Genetic model of the diapiric-related ore deposits in the studied ore districts as well as in other ore deposits in the Diapir zone. This model shows the stages of organic matter maturation, migration of hydrocarbons and metals, and the emplacement of ore mainly in the SE flank of the diapirs (modified after the hydrocarbon migration model of Chaari et al., 2003).