The Encyclopaedia Britannica: A Dictionary of Arts, Sciences and General Literature, 10. köideThomas Spencer Baynes, William Robertson Smith R.S. Peale, 1890 |
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Page 227
... igneous rocks , as The non - crys well as of sandstone and numerous aqueous rocks . tallized or colloid quartz is chiefly met with in cavities and fissures of rock where it has been slowly deposited from aqueous solution . Numerous ...
... igneous rocks , as The non - crys well as of sandstone and numerous aqueous rocks . tallized or colloid quartz is chiefly met with in cavities and fissures of rock where it has been slowly deposited from aqueous solution . Numerous ...
Page 228
... igneous rocks . By their decay they form clay , and in that condition enter largely into the composition of the argillaceous stratified rocks , such as shale , mudstone , slate , & c . Hornblende is a meta - silicate of magnesium , with ...
... igneous rocks . By their decay they form clay , and in that condition enter largely into the composition of the argillaceous stratified rocks , such as shale , mudstone , slate , & c . Hornblende is a meta - silicate of magnesium , with ...
Page 229
... igneous fusion , it is not altogether peculiar to them . It may be produced by chemical deposit from aqueous solutions , or it may be developed in rocks previously granular by chemical infiltration and metamorphism . Under the head of ...
... igneous fusion , it is not altogether peculiar to them . It may be produced by chemical deposit from aqueous solutions , or it may be developed in rocks previously granular by chemical infiltration and metamorphism . Under the head of ...
Page 230
... igneous and some metamorphic rocks . In some cases it exists in such development as powerfully to affect the magnetic needle , so that observations with that instrument among rocks of this character are deceptive . But even when much ...
... igneous and some metamorphic rocks . In some cases it exists in such development as powerfully to affect the magnetic needle , so that observations with that instrument among rocks of this character are deceptive . But even when much ...
Page 231
... igneous and sedimentary rocks . Thus they have often a distinctly granular structure , resembling that of sedimentary deposits , with , at the same time , an arrange- ment of the micaceous folia reminding us of the fluid structure of ...
... igneous and sedimentary rocks . Thus they have often a distinctly granular structure , resembling that of sedimentary deposits , with , at the same time , an arrange- ment of the micaceous folia reminding us of the fluid structure of ...
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Common terms and phrases
abundant acid ancient angle appear augite axis basalt beds brachiopods carbonic carbonic acid centre century character chemical coal coast consists contains crust crystalline crystals deposit depth distance district earth equator eruption evidence existence feet felspar formations fossils Gaelic Galatia gallic acid galls galvanometer Gaur gelatin gems geological globe gneiss granite heat hornblende igneous igneous rocks important iron islands known lake land latitude lava less lime limestone longitude mass materials matter meridian metamorphic miles mineral mountain observed obtained occur ocean organic original orthoclase parallel Paris passing period plane portion present pressure produced quartz regions remains rise river rocks Roman round sand sandstone schists Scotland sediment shales side siliceous Silurian sometimes species square miles stones strata stream structure substance surface temperature thick tion town traced trilobites upper vapour vertical volcanic voyage whole