sentences:  The most intensely affected rocks are those of south and central Pembrokeshire where steeply dipping and vertical strata are commonplace and multiple folding, faulting and overthrusting are well seen in coastal sections.Southern Carmarthenshire and the western part of the South Wales Coalfield was affected to a lesser extent.Old Caledonoid weaknesses such as the Neath Disturbance were reactivated at this time.