Question:  The Bowland Shale Formation is a Carboniferous geological formation of Asbian (Visean) to Yeadonian (Bashkirian) age, it is an organic-rich shale which, according to which organization, and is the source rock where "oil and gas matured before migration to conventional fields in the East Midlands and the Irish Sea"?
Sentence (from "Bowland Shale Formation"): The Bowland Shale Formation is a Carboniferous geological formation of Asbian (Visean) to Yeadonian (Bashkirian) age.
Relevant evidence: No