History of the Republic of Venice of the Sea" ceremony was established in this period. Orseolo died in 1008. Venice's control over the Adriatic was strengthened by an expedition by Pietro's son Ottone in 1017, by which time Venice had assumed a key role in balancing power between the Byzantine and Holy Roman Empires. During the long Investiture Controversy, an 11th-century dispute between Henry IV, Holy Roman Emperor and Pope Gregory VII over who would control appointments of church officials, Venice remained neutral, and this caused some attrition of support from the Popes. Doge Domenico Selvo intervened in the war between the Normans of Apulia and
Gulf of Suez synrift and postrift Miocene to Holocene clastics and evaporites. Three large oil fields are in the gulf: the El Morgan discovered in 1964, Belayim discovered in 1955, and the October Field discovered in 1977. The October Field produces from the Cretaceous Nubia Formation, the Upper Cretaceous Nezzazat Formation, the Miocene Nukhul Formation, and the Miocene Asl Member of the Upper Rudeis Formation. Gulf of Suez The Gulf of Suez (; formerly , "", "Sea of Calm") is a gulf at the northern end of the Red Sea, to the west of the Sinai Peninsula. Situated to the east of the