Earth Sculpture; Or, The Origin of Land-forms |
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Page 6
... separated by a broadly marked line of demarcation from the schists , granites , etc. , upon which they repose . In other cases the sedimentary rocks become gradually altered as they are traced down- wards , 6 EARTH SCULPTURE.
... separated by a broadly marked line of demarcation from the schists , granites , etc. , upon which they repose . In other cases the sedimentary rocks become gradually altered as they are traced down- wards , 6 EARTH SCULPTURE.
Page 7
James Geikie. become gradually altered as they are traced down- wards , until eventually they themselves assume the aspect of crystalline schists , penetrated here and there by granitoid igneous rocks . The origin of those ancient ...
James Geikie. become gradually altered as they are traced down- wards , until eventually they themselves assume the aspect of crystalline schists , penetrated here and there by granitoid igneous rocks . The origin of those ancient ...
Page 24
... gradually removed . The evidence of denudation is conspicuous , but its products have for the most part been carried away . In some places , as Professor Walther remarks of the Libyan Desert , are great walls of granite rising to ...
... gradually removed . The evidence of denudation is conspicuous , but its products have for the most part been carried away . In some places , as Professor Walther remarks of the Libyan Desert , are great walls of granite rising to ...
Page 25
... be- hind . Such insoluble materials are frequently stained yellow - brown or red , owing to the pressure of iron- oxides . In this way felspathic rocks gradually crum- ble down . Thus , granite , gneiss , basalt AGENTS of denudATION 25.
... be- hind . Such insoluble materials are frequently stained yellow - brown or red , owing to the pressure of iron- oxides . In this way felspathic rocks gradually crum- ble down . Thus , granite , gneiss , basalt AGENTS of denudATION 25.
Page 27
... gradually and silently re- moved from the surface of the land . And the great depth now and again attained by rotted rock testifies likewise to the destructive action of rain - water perco- lating from the surface . This is particularly ...
... gradually and silently re- moved from the surface of the land . And the great depth now and again attained by rotted rock testifies likewise to the destructive action of rain - water perco- lating from the surface . This is particularly ...
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Common terms and phrases
accumulation Alpine Alps anticlines basalt base-level basins become beds boulder-clay Carboniferous character cirques cliffs coast-lines coasts configuration Cretaceous crust crustal movements crystalline débris denudation deposits depressions depth detritus direction dislocations drainage elevation epigene epigene action epigene agents eroded escarpments feet fiords flow fluvio-glacial fluvio-glacial deposits folds gently geological structure glacial action glacial erosion glaciers gradually ground-moraines hills hollows horizontal strata ice-flow ice-sheet igneous rocks inclined indented infrequently irregular islands joints kind laccoliths lakes land land-forms land-surface lava less limestone low grounds materials mer de glace modified moraines mountain-chain mountain-valleys mountains névé normal faults Old Red Sandstone outcrops owe their origin plain of erosion plateau regions relatively result ridges rock-basins rock-masses sand Sandstone schistose schists Section sediment slopes Southern Uplands strata streams and rivers superficial surface surface-features synclinal tectonic tend thickness tion tracts traversed underground undulating usually valleys vertical volcanic wind