Emirate of Sicily co-existence. This co-existence with the conquered population fell apart after the reconquest of Sicily, particularly following the death of King William II of Sicily in 1189. The Emirate of Sicily began to fragment as intra-dynastic quarrels took place within the Muslim regime. In 1044, under emir Hasan al-Samsam, who established al-Samsam Emirate of Sicily, the island fragmented into four qadits, or small fiefdoms: the qadit of Trapani, Marsala, Mazara and Sciacca, a certain Abdallah ibn Mankut; that of Girgenti, Castrogiovanni and Castronuovo (Ibn al-Hawwàs); that of Palermo and Catania; and that of Syracuse (Ibn Thumna). By 1065, all of them
Geology of Sicily well as the regional uplift of the Calabrian unit. The tectonic setting of Sicily is controlled by the rate of collision of the African plate and Eurasian plate and the rate of back rolling of the African plate. The tectonic history of Sicily can be divided into four main stages: During Late Triassic, the ancient Neotethys ocean was formed by a major continental rifting event and rapid tectonic subsidence. Traces of the tectonic event can be found at both the Hyblean plateau and western Sicily. After the rapid subsidence during Triassic to Early Jurassic, there was a slow thermal subsidence