Practical Geology and Mineralogy: With Instructions for the Qualitative Analysis of Minerals

abundant accumulation acid afford alternations ammonites animals appears argillaceous basalt beds beneath bones calcareous Cambrian carbonate of lime carboniferous limestone cave chalk character cliffs coal field coast colour composed conglomerate consists containing coral covered crag cretaceous crystals deposits detritus diluvial diluvium district earth elevation England eocene epoch eruption estuary Europe exhibit existing extending extinct feet felspar formation fossils fragments genera Geological Society geologists gneiss granite gravel greensand heat hills hornblende hyæna inhabited iron islands Isle land lava lias London clay lower Lyell magnesian mammalia marine shells marls masses metallic mica miles mineral miocene molluscs nearly northern numerous occur ocean old red sandstone oolitic organic remains oxide Paris basin pebbles pliocene poikilitic portion produced quartz resembling river sand schist sediment shale siliceous Silurian slate sometimes species strata stratified sulphur surface tertiary strata thickness tion upper valleys veins volcanic Wales wealden