8 pages matching composition of barbados clays in this book
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angle appears augite band Barbados beds brachiopoda breccia calcareous Carboniferous Carrock Fell Chalk character chert Clay Coal Measures Codden Hill Corals Cotteswolds crush-conglomerate crystals Culm Measures dark deposits described Devon district dolerite Duchassaing east evidence fauna feet felsites felspar fossils fragments Freestone gabbro Galley Hill genus Geol Geological Goodwick granophyre granules gravel Greensand grey grit groundmass Gryphite-grit Haime hemera Hist horizon igneous rock inches intrusive island Journ Lake later lavas limestone Lower Culm M.-Edwards marl mass Michelotti microscope miles millim moraine Museum Notgrove numerous occur Oolite paper pebbles Permian present probably Prof quarry Quart radiolarian Reefs sands sandstones sandy seen shales shell side silica slates Society species specimens stone strata structure surface Synonymy tarn Terebratula thickness trilobites Upper valley volcanic whorls Wyre Forest Zool Zooph