Offshore Fault (1) Normal OCB Thrust Transfer Offshore Ridge (2) Peridotie Ridge Volcanic Ridge Igneous (3) BVRS Continental Lava Flows Igneous Complex Inner SDRs Outer High Outer SDRs Sills Intrusive Bodies (4) Tectonic Elements (5) Eocene Uplift Oceanic Shelf Volcanic Seamounts Seismic Survey 3D (6) Seismic Survey 2D (7) Offshore Geology (8) Arch Basement Igneous Lower Cretaceous Mesozoic Mid Cretaceous Mid Jurassic Tertiary Triassic Upper Cretaceous Upper Jurassic Upper Paleozoic Marine Basin (9) Continental Margin (10) Irish Sea Marine Aggregate Resource Study Area (UK) (12) Irish Sea Marine Aggregate Resource Study Area (IRL) (13) Irish Sea Marine Aggregate Resource Area (14)