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The Killas of South and West Cornwall
The Killas of North and East Cornwall
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altered anticline bands Beche beneath Bodmin Moor Breccia Carboniferous Carnmenellis chert cliffs coast conglomerate Cornish Cove Culm Measures Dartmouth Slates deposits described Devon Devonian age Devonian rocks east elvan Falmouth fault feet platform feldspar folding fossiliferous fossils gabbro Geol Geological Survey Gerrans Bay gneisses goniatites Grampound Gramscatho granite gravels greenstone grey slates Gunwalloe hornblende hornblende-schists igneous inland intrusive Kennack killas Land's End Landewednack latter lava limestone Lizard boundary Lizard Head Series lodes Lower Culm Lower Devonian Manaccan margins mass Meadfoot Beds Meneage Breccia metamorphic mica-schists Middle Devonian miles minerals Mylor north Cornwall occur Old Lizard Head Ordovician outcrop Padstow pebbles pillow-lavas Pliocene Porthallow Portscatho purple and green Quarry quartz quartzite radiolaria River sand sandstones schists sedimentary serpentine shales Staddon Grit strata structure Traboe Upper Culm Upper Devonian valley variegated slates Veryan Bay Veryan Series volcanic Watergate Bay zone