Economic Geology: Or, Geology in Its Relations to the Arts and ManufacturesW. Blackwood and sons, 1874 - 336 páginas |
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Página 9
... occasionally columnar , in structure , uniform and crystalline in texture , and rarely imbed any traces of organic remains . While the preceding are the general characteristics of the stratified and unstratified rocks , it must be borne ...
... occasionally columnar , in structure , uniform and crystalline in texture , and rarely imbed any traces of organic remains . While the preceding are the general characteristics of the stratified and unstratified rocks , it must be borne ...
Página 10
... occasionally filled up with rubbly matter washed in from above , and sometimes with molten matter injected from below ; and hence the occurrence of dykes , as they are termed " soft " in b ບ ບ a Simple fissure ; b Fault ; c Soft dyke ...
... occasionally filled up with rubbly matter washed in from above , and sometimes with molten matter injected from below ; and hence the occurrence of dykes , as they are termed " soft " in b ບ ບ a Simple fissure ; b Fault ; c Soft dyke ...
Página 16
... occasionally compound . IRON GROUP Hæmatite , magnetite , limonite , ilmenite , iserite , chromite , Franklinite . MANGANESE GROUP - Hausmannite , braunite , pyrolusite , manganite , psilolmelane , wad . TIN GROUP - Cassiterite , wood ...
... occasionally compound . IRON GROUP Hæmatite , magnetite , limonite , ilmenite , iserite , chromite , Franklinite . MANGANESE GROUP - Hausmannite , braunite , pyrolusite , manganite , psilolmelane , wad . TIN GROUP - Cassiterite , wood ...
Página 19
... occasionally also to wave - action , as the " Boulder Beach " of Appledore . Block is the term applied to the more angular masses ; hence such phrases as " blocks and boulders , " " perched blocks , " & c . Sandstone is simply ...
... occasionally also to wave - action , as the " Boulder Beach " of Appledore . Block is the term applied to the more angular masses ; hence such phrases as " blocks and boulders , " " perched blocks , " & c . Sandstone is simply ...
Página 26
... occasional deposits of rock - salt and gypsum . The lower portion , being largely developed in Perm in Eastern Russia , has given rise to the term Permian ; and the upper , consisting in Germany of three well - marked members ...
... occasional deposits of rock - salt and gypsum . The lower portion , being largely developed in Perm in Eastern Russia , has given rise to the term Permian ; and the upper , consisting in Germany of three well - marked members ...
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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
abundance admixture agricultural alumina amount antimony arsenic arts and manufactures basalts beds bismuth bituminous blocks Britain calcareous carbonate carbonic acid Carboniferous cements chalk chemical chiefly chloride clay clayey coal colour compact composition consists containing copper crust crystalline crystals deposits districts durable earth employed engineer felspar fire-clays formations geologist Geology gold granites gravels Greensand greenstones grits gypsum hard heat hence hornblende igneous ingredients iron ironstones known largely lignites lime limestones lustre magnesia manganese manures marbles marls masses material metamorphic mineral and metallic mortar nature obtained occasionally occur Oolite ornamental oxide peat phosphate pigments polish 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 stones strata stratified structure subsoils substances sulphate sulphide sulphuric acid surface tellurium tertiary texture thickness tion tons usually varieties various vary veins volcanic yield zinc