"Julian Bentick amongst the ?Old Red Sandstone sequence during the Pembrokeshire Field Trip, 1974"

"Julian Bentick, chairman FGS 1972-1975, at an outcrop of Cambrian conglomerate on the coastal path near Fishguard, during the Pembrokeshire Field Trip in 1974."

"Rabu et al (see Photo 9) indicate that the Jersey Shale sequence is slightly younger than the Brioverian rocks of Brittany. The large scale sutures separating the terranes of the Brioverian sequence, had an associated transverse movement during the Cadomian orogeny when the Celtic Ocean (to the North of Brittany) slid westwards, bringing Jersey to its current location from its original setting during deposition of the Jersey Shale, further east."

"The Jersey Shale sequence comprises shales with thin fine grained turbiditic sandstones of a medial to distal fan setting as seen above, but also, thicker, coarser and sometimes slumped sandstones of a more proximal fan setting (i.e. closer to an unstable shelf from which dense sediment-laden waters have flowed as a turbid current into deeper waters). Rippled tops to the sandstones occur in places, indicating shallower seas or continued current flow of a non-turbid nature."

"Gabbros and basaltic volcanic rocks are believed to be formed by partial melting of mantle rocks (i.e.the olivine, orthopyroxene, plus trace minerals such as garnet) partially melt to form gabbroic magmas which then solidfy to a rock comprising olivine, clinopyroxene and plagioclase felspar."