Anatomy of a world-class source rock: Distribution and depositional model of Silurian organic-rich shales in Jordan and implications for hydrocarbon potential

摘要

Silurian organic-rich (hot) shales were the source of large amounts of hydrocarbons in northern Gondwana,with supergiant and giant fields in the Middle East and North Africa.A study of these black shales has been conducted in Jordan,where they represent the source for the Risha gas field.Two organically enriched horizons occur in the Silurian in Jordan,termed the lower hot shale and the upper hot shale.Deposition of the transgressive lower hot shale occurred during the early Llandoverian and was restricted to the earliest Silurian paleodepressions.