Economic Geology: Or, Geology in Its Relations to the Arts and ManufacturesW. Blackwood and sons, 1874 - 336 páginas |
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Página ix
... COMPOSITION , Stratified and Unstratified Rocks . Relative Positions of Rocks . Structure and Texture of Rocks . Hardness and Specific Gravity of Rocks . Composition of Rocks - Chemical and Mineralogical . Mixed Rocks - Classification ...
... COMPOSITION , Stratified and Unstratified Rocks . Relative Positions of Rocks . Structure and Texture of Rocks . Hardness and Specific Gravity of Rocks . Composition of Rocks - Chemical and Mineralogical . Mixed Rocks - Classification ...
Página 1
... composition , relative positions , and fossil contents ; endeavouring to deduce therefrom a connected his- tory of our globe and its successive aspects from the earliest to the most recent times . In its practical effort it takes ...
... composition , relative positions , and fossil contents ; endeavouring to deduce therefrom a connected his- tory of our globe and its successive aspects from the earliest to the most recent times . In its practical effort it takes ...
Página 2
... composition and structure of the earth becomes more and more indispensable ; hence an acquaintance with Geology , if ... composition and texture . This composition and texture may be naturally unfertile , and yet may be capable of ...
... composition and structure of the earth becomes more and more indispensable ; hence an acquaintance with Geology , if ... composition and texture . This composition and texture may be naturally unfertile , and yet may be capable of ...
Página 3
... composition may be corrected by the applica- tion of appropriate mineral manures ; but how can the farmer obtain this needed information save through a geological ac- quaintance with the nature of the materials he has to operate upon ...
... composition may be corrected by the applica- tion of appropriate mineral manures ; but how can the farmer obtain this needed information save through a geological ac- quaintance with the nature of the materials he has to operate upon ...
Página 5
... composition and structure of that earth , so that the place of those minerals and metals may be known , their abundance ascertained , and the facility of obtaining them be determined , cannot fail to be of advantage to those who have to ...
... composition and structure of that earth , so that the place of those minerals and metals may be known , their abundance ascertained , and the facility of obtaining them be determined , cannot fail to be of advantage to those who have to ...
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Economic Geology: Or, Geology in Its Relations to the Arts and Manufactures David Page Visualização integral - 1874 |
Economic Geology: Or, Geology in Its Relations to the Arts and Manufactures David Page Visualização integral - 1874 |
Economic Geology: Or, Geology in Its Relations to the Arts and Manufactures David Page Visualização integral - 1874 |
Palavras e frases frequentes
abundant admixture agricultural alumina amount antimony arsenic artificial arts and manufactures basalts beds bismuth bituminous blocks borax Britain calcareous carbonate carbonic acid Carboniferous cements chalk chemical chiefly chloride clay coal colour compact composition consists containing copper crust crystalline crystals deposits Derbyshire districts durable earth employed engineer extensively felspar fire-clay formations gems geologist Geology gold granites greenstones grits gypsum hard heat hence hydraulic ingredients iron ironstones known lignites lime limestones lustre magnesia manganese manures marbles masses material metamorphic mineral and metallic mortar nature obtained occasionally occur Oolite ornamental oxide peat pigments polishing porphyries potash preparation purposes pyrites quarries quartz require rocks saline salts sand sandstones schists serpentines shales silica Silurian silver soda sodium soft soils specific gravity springs stones strata stratified structure substances sulphate sulphide sulphuric acid surface tertiary texture thickness tints tion tons usually varieties various vary veins volcanic yellow yield zinc