GWL Field Trip 2013: A field excursion to show the changing environments of deposition in the context of falling sea-level and structural deformation caused by contemporary movement of the Aber Dinlle and Great Orme faults

Lead by Marion Grundy Ridgewood, the field trip entitled “A field excursion to show the changing environments of deposition in the context of falling sea-level and structural deformation caused by contemporary movement of the Aber Dinlle and Great Orme faults”
was described in her own words as consisting of:
“A run through the sequence, looking at the dolomitisation of the Llanarman Ls and the duplicated sequence of the Leete Ls (it has a secret hidden crinoid assemblage!) – both by Happy Valley, the sandstone channel in the upper sequence of the Loggerheads Ls beside Mynedd Isaf, the awesome fossil assemblages in the Cefn Mawr Fm at Bishop’s Quarry and the syn-sedimentary deformation of the chert-rich Red Wharf Ls at the top. Mainly the aim is to show the changing environments of deposition in the context of falling sea-level and structural deformation caused by contemporary movement of the Aber Dinlle and Gt Orme faults.”
The geology of the Great Orme 11th July 2013