Introductory Text-book of GeologyW. Blackwood and Sons, 1869 - 194 strani |
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Stran 10
... agency that accumulations of clay , sand , and gravel are formed at the present day . We are thus led to in- quire ... agencies , under different arrangements of sea and land , as well as under different conditions of climate ...
... agency that accumulations of clay , sand , and gravel are formed at the present day . We are thus led to in- quire ... agencies , under different arrangements of sea and land , as well as under different conditions of climate ...
Stran 11
... agencies thousands of acres of land have been washed away and covered by the sea , even within the memory of man ; while by the same means new tracts have been formed in districts formerly covered by the tides and waves . Further , we ...
... agencies thousands of acres of land have been washed away and covered by the sea , even within the memory of man ; while by the same means new tracts have been formed in districts formerly covered by the tides and waves . Further , we ...
Stran 15
... agency , as well as all that appertains to the development of vege- table and animal life , is performed on or within this shell . It is thus at once the theatre of all geological change , and the index to all true geological history ...
... agency , as well as all that appertains to the development of vege- table and animal life , is performed on or within this shell . It is thus at once the theatre of all geological change , and the index to all true geological history ...
Stran 16
... agency , -are all continually tending to separate , to combine , and to rearrange the materials composing the crust of the earth . 13. In a comparatively fixed and stable region like our own , one is apt to underrate the effects of ...
... agency , -are all continually tending to separate , to combine , and to rearrange the materials composing the crust of the earth . 13. In a comparatively fixed and stable region like our own , one is apt to underrate the effects of ...
Stran 18
... Agencies . 16. Of these modifying causes , the ATMOSPHERIC , though not the most powerful , are by far the most general in their opera- tions . The atmosphere envelops the earth on every side ; acts mechanically by its currents of wind ...
... Agencies . 16. Of these modifying causes , the ATMOSPHERIC , though not the most powerful , are by far the most general in their opera- tions . The atmosphere envelops the earth on every side ; acts mechanically by its currents of wind ...
Pogosti izrazi in povedi
abundant accumulations agency aqueous arrangement ATLAS basalt beds bituminous boulders building-stone calcareous Cambrian carboniferous chalk chemical chiefly clay clay-slate coal coal-measures coloured compact composed composition conglomerates coral-reefs corals cretaceous crust crustacea crystalline deposits districts drift earth Edition encrinites England eocene epoch estuaries existing felspar fishes formation forms fossils frequent fresh-water GEOGRAPHY geologists Geology globe gneiss granite gravel greenstone grits groups igneous rocks interstratified islands lakes laminated land Laurentian lava layers less lias lignite lime limestone lower marine marls masses Mesozoic Metamorphic mica mica-schist mineral mountain limestone numerous occur ocean Old Red Sandstone oolite origin PALEOZOIC peculiar period Permian plants and animals present quartz remains of plants reptiles rivers rocky sand schists Scotland seams seas sedimentary shales shell-fish shells silicious silt Silurian slates slaty species stone strata stratified rocks structure surface termed tertiary TEXT-BOOK texture thick tion trap trappean Triassic upheavals upper vegetable volcanic wealden zoophytes
Priljubljeni odlomki
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Stran 193 - It has not been our good fortune to examine a text-book on science of which we could express an opinion so entirely favourable as we are enabled to do of Mr Page's little work."— Athenceum., ADVANCED TEXT-BOOK OF GEOLOGY, DESCRIPTIVE AND INDUSTRIAL.
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Stran 193 - Of singular merit for its clearness and trustworthy character." — Standard. Third Edition, Enlarged. GEOLOGY FOR GENERAL READERS. A Series of Popular Sketches in Geology and Palaeontology. By the Surne. 6s. "This is one of the best of Mr page's many good books. It is written in a flowing, popular style. Without illustration or any extraneous aid, the narrative must prove attractive to any intelligent reader."— Geological Magazine.
Stran 193 - The divisions of the subject are so clearly defined, the explanations are so lucid, the relations of one portion of the subject to another are so satisfactorily shown, and, above all, the...