Section of Highland Stone Crs quartz, 1 mile E of Colvin Hill. Top of exposure. 5 ft 2 in. 5 ft chert argillaceous. 1 ft dark blue compact clay, fossiliferous at top. 1ft 6in. greenish argillaceous with two thin argillizations. Lowest layer (?) fossiliferous at base. 2 ft 2 in. Massive hard compact dark clear fossiliferous clay, weathered face very from exposure? 10 in. dark blue compact clay. 3 ft 2 in. dark chalky grey compact clay, 2 ft dark compact clay. 5 ft 6 in. (covered) Probably Carboniferous Probably this part is a clay layer. The top surface of next lower layer contains spirifera mudley quartz sandstones, Again quartz sands, clear large sections corroded. 4ft 6in. Three strata of black crystalline clay with shale partings, the upper one containing a moderate chalky layer. 3 ft 3 in. thick indurated shaly grey 1 ft mud, with shale partings, straggling sandstone, with thin shells. 6ft 10in. Massive fissure filled grey clay with chert near top Crust of iron ore on surface. 5 ft massive light grey crystalline clay stylolites plane. 3 ft 6 in. Massive light grey crystalline clay, stylolite plane. 11 ft. Massive to medium bedded dark coloured fissure compact clay, which weathers into strata not breaking up into massive slate by flattening. 1ft 5in. Dark coloured compact fissure clay 1 in shale parting. 1 ft 11 in. Compact fissure dark coloured clay 1 in shale parting. 3 ft Thin bedded dark coloured marl, layers of cement with a trace of green shale parting, Probably the upper part of the Bristol or strata in the other quarries. 5 ft for main part of quarry exposure prior to this inquiry. 3 in. yellow fine clay decorated with thin jet pieces. 14 ft Massive crystalline Ochreous This partly badly shot up by quarrying Finest place is quartz. 27 ft covered. 2 ft 2 in. Massive light grey compact clay, creek level.