Jurassic ages from intrusives and extrusives within the Forties Igneous Province

The Forties igneous province lies at the intersection of three major graben systems within the North Sea, namely the Viking Graben, Central Graben and Moray Firth Basin. The first exploration well to encounter the Forties igneous province was the Forties oilfield discovery well, 21/10-1 drilled in October 1970, and subsequent drilling has revealed the full lateral extent of the province.