Petroleum generation and migration in the Cambro-Ordovician Laurentian margin succession of NW Scotland John Parnell Stephen Bowden Darren Mark 10.6084/m9.figshare.5406307.v1 https://geolsoc.figshare.com/articles/journal_contribution/Petroleum_generation_and_migration_in_the_Cambro-Ordovician_Laurentian_margin_succession_of_NW_Scotland/5406307 Technical data for Ar–Ar dating. 2017-09-14 12:02:13 NW Scotland Technical data petroleum generation Cambro-Ordovician Laurentian margin succession Ar migration Geology