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brecciation and contortion exhibited in sandstone
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Alnwick Amaltheus ammonites Andesites anticline B.Sc band base Beck beds Bisat Blue John Blue John Cavern borehole Borrowdale calcareous calcite Carboniferous Cementstone Group Chert Cheviot clay Cleveland Clough Coal colour Coniston Corallian correlation Craven Fault crinoid crystals deposits Derbyshire doggers dolomite Domerian drainage Dunham dyke east edelburgensis erosion evidence facies fauna feet O.D. fluorite fluorspar folding fossils Geol Geological Survey glacial goniatites granite gravity Hawsker hawskerense Hill horizon Ironstone Jurassic lavas Lias Limestone Group Lower Main margaritatus marine Market Weighton miles Millstone Grit mineralisation minerals mudstone north Yorkshire occur Oolite outcrop overflow channels Pennines Pleuroceras Proc quarry quartz rocks sand sandy Scremerston Seam sediments shales shell silica Skiddaw Slates south-west species specimens spicules Spinatum Staithes stokesi stone strata structure Subzone surface Surv thick thin Treak Cliff Cavern tuffs Upper valley veins Whin Sill Yorkshire Zone