The Story of the Rocks: Fourteen Weeks in Popular Geology

abundant agate ammonite ancient animal Appalachian appearance beautiful beds birds bones Botany bottom bowlders Brachiopods called Carboniferous cave chalk clay coal color continent corals Cretaceous crinoids crystals débris deep deposits Describe Devonian dikes Drift earth earth's crust elephant Eozoic Epoch existed feet thick feldspar ferns fish folded forests formation fossils Geography geologic geologist glaciers gneiss granite heat hills Hugh Miller hyena Ichthyosaur igneous inches Irish elk iron Kinds of rock Lake Superior land lava layers lime limestone mammals mammoth marble mass melted Mesozoic metamorphic metamorphic rocks mica miles mineral mollusks mountains Nature Niagara ocean Paleozoic pebbles Period plesiosaur polished present quarried quartz region remains reptiles resembling river rocky sand sandstone Scenic sediment sedimentary rocks shales shells shore siliceous Silurian siphuncle slate soil species stone strata stratified rocks striæ surface teeth Tertiary tion traced trees Trenton Triassic trilobite vegetation veins York