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abundant accumulations agencies ages America aqueous areas arranged basalts beds bones Boulder calcareous Cambrian Carboniferous chalk chiefly clays Coal-Measures composition conglomerates consist corals Cretaceous crustacea crystalline current epoch deposits Devonian drifted earth earthquake eocene estuaries Europe eurypterus evidence existing extinct felspar fishes fissures flagstones flora and fauna foraminifera formations forms fossils fresh-water genera geologists Geology globe granite gravels Greensand greenstones grits igneous ironstones islands lakes lava layers less lignites lime limestones lower mammals marine marls Mesozoic metamorphic mineral miocene nature numbers occur ocean Old Red Sandstone older Oolitic organic remains Palaeozoic partly peat-mosses pebbly period Permian plants and animals pliocene portion Post-Tertiary present quartz reptiles rivers rock-matter sands schists sea and land sea-urchins seams of coal sediments shales shell-fish shells shores siliceous silts Silurian similar species stones strata stratified rocks surface terrestrial Tertiary texture thickness tions Trias Triassic unstratified upheavals upper uprise vegetable volcanic Wealden
Page 115 - Maestricht Beds. Upper White Chalk. Lower White Chalk. Upper Greensand. Gault. Lower Greensand. Wealden Clays and Sands.
Page 74 - ... Villeneuve yields a dark purple stone. The OOLITES, which follow in ascending order, make up for the deficiency of the Lias group. These rocks have furnished valuable building material during a long period in nearly every country of the world. They are well developed in England, occupying a broad belt from the Yorkshire coast on the one side to that of Dorset on the other. These limestones are utilized for building in France, Germany, Austria, Switzerland, and Italy ; indeed there is scarcely...
Page 4 - In the course of eleven short divisions or sections, Mr Page conveys such a knowledge of Geology as any well-informed mind would like to possess." — Inverness Courier. " We can commend the book with confidence ; and it seems to us very well adapted both for the self-educator and for the use of advanced classes in schools. Its value is enhanced by a number of capital woodcut illustrations, and an excellent index and glossary.
Page 43 - It is impossible, in the existing state of our knowledge, to determine the precise nature of colloid, or to assign to it its proper position in the scale of the heterologous formations. It is certainly destitute of many of the properties of carcinomatous disease, and yet its career, so far as I have had occasion to watch it, is not the less positively fatal, especially when...
Page 56 - GRIT. —Generally a local derelopment of moderate thickness, consisting, for the most part, of compact gritty sandstones, with interstratified shales and thin seams of coal. 3. MOUNTAIN OR CARBONIFEROUS LIMESTONE. —A series of thickbedded marine limestones, with occasional shales, sandstones, and thin seams of coal.
Page 117 - FROM what has been stated in the preceding chapters, it will be seen that the rocky crust of our globe presents a history of long-continued change and progress.
Page 48 - Eussia, and Bohemia; in Asia Minor; along the Himalaya and Altai ranges; in Australia and New Zealand; along the Andes, Kocky Mountains, and Appalachians in America.
Page 40 - Such are the igneous or fire-formed rocks—their mineral characters, their modes of occurrence, and the effects they produce on the strata with which they are associated, as disrupting, overlying, or interstratified masses.