Kosmos Energy Ltd. (KOS)

[emdyal]

The pre-salt layer is a diachronous series of geological formations on the continental shelves of extensional basins formed after the break-up of Gondwana, characterised by the deposition of thick layers of evaporites, mostly salt. Some of the petroleum that was generated from sediments in the pre-salt layer has not migrated upward to the post-salt layers above due to salt domes.[1] This is especially common off the coast of Africa and Brazil. Total pre-salt oil reserves are thought to be a significant fraction of the world's oil reserves.