Llanfawr Quarries
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There are four Llanfawr Quarries dolerite quarries near Llandrindod Wells, Wales they were excavated for building stone in the 19th and early 20th centuries. Three of these quarries constitute a Site of Special Scientific Interest and permission to collect must be sought from the Countryside Council for Wales.[1]
The dolerite lopoliths and laccoliths intrude through finely grained highly fossiliferous mudstones which underwent some contact metamorphism but stratigraphic units can still be distinguished.[1]
The Lower Llanfawr Quarry
This quarry contains remnant outcrops of highly trilobitic blue mudstones.[1]
The Upper Llanfawr Quarry
SO065617[2] This site preserves fossil fauna of great international importance within the basal Caradoc mudstones,[1] and is one of four significant localities for soft-bodied faunas in the Ordovician worldwide.[1] Iron pyrite fossil graptolites are visible at the outcrop, and less evident iron pyrite sponges, hydrozoans, echinoderms, nautiloids (with encrusting organisms), rare arthropods and worms are also present.[2]