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Amphibians animals Appalachian Archaean areas Atlantic border beds bones Brachiopods calcite called carbon Carboniferous Carboniferous age Cenozoic Champlain period coal coal-beds coal-measures continent corals Cretaceous Crinoids crystalline crystals deposits Devonian dry land earth earth's crust Eocene Europe feet feldspar Fishes fissures flexures folds formation forms fossils fractures fresh-water Ganoids Glacial glacier gneiss granite gravel heat height hence hornblende igneous rocks iron Jurassic kinds Lake layers lime limestone liquid rock Lower Silurian Mammals marine melted Mesozoic metamorphism mica mica schist miles minerals Miocene Mississippi modern Mollusks moun Mountain region mountain-making nearly North America numbers ocean Paleozoic plants Pliocene progress quartz Radiates relics represented in Fig Reptiles Rhizopods rivers rock-making Rocky Mountain sand sand-beds sand-flats sandstone schist scratches seas shales shells shown in Fig shows silica slope sometimes species Sponges stones strata streams summit surface Tertiary thickness Triassic tribe Trilobites upturning valleys Vertebrates volcanoes waters York
Page 79 - ... into a coast and make deep valleys. The ocean has done but little valleymaking, and only that of the broadest kind, when its wide currents swept over the submerged continent. The gorging of mountains and plains it has left to the running waters of the land. These running waters have been aided in some cases by glacier-ice (page 58). 2. Valleys made by the upheaval of mountains. — The wide Mississippi valley is a depression between the Rocky Mountains on the west and the Appalachians on the...
Page 1 - GEOLOGY. THE word Geology is from two Greek words signifying the story of the earth. As used in science, it means an account of the rocks which lie beneath the surface and stand out in its ledges and mountains, and of the loose sands and soil which cover them; and also an account of what the rocks are able to tell about the world's early history. By a careful study of the nature and positions...
Page 228 - Cham/plain period was abruptly terminated. For carcasses of the Siberian Elephants were frozen so suddenly and so completely at the change> that the flesh has remained untainted. Near the close of the last century, one huge carcass dropped out of the ice-cliff at the mouth of the Lena, and for a while made food for dogs. The existence of a hairy covering was then first ascertained. A hairy Rhinoceros has also been found in the ice.