intrusions
‘Eastern promontory of the first cove east of St Agnes’
‘Cligga Point 4 miles east of St Agnes Cornwall north coast’
‘Curvature in killas on the coast immediately below St Agnes’
‘Isolated rock and whyn dyke at Port Cooan’
‘Whyn dyke at Rovin Valley’
‘Basaltic tower called Castro Levit at the foot of Magilligan Facade’
‘Oblique undulating dyke near Seaport one mile west from the Giants Causeway’