Earth Sculpture; Or, The Origin of Land-forms |
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Page 31
... matter leached out at the surface and carried away by streams and rivers , it is obvious that in course of time the land cannot fail to have been con- siderably modified by chemical action alone . In point of AGENTS Of denudATION 31.
... matter leached out at the surface and carried away by streams and rivers , it is obvious that in course of time the land cannot fail to have been con- siderably modified by chemical action alone . In point of AGENTS Of denudATION 31.
Page 33
... streams , and the swollen rivers run discoloured to the sea . Similar floods often result from the melting of snow in spring . During such floods our rivers are generally more turbid than when they are swollen merely by heavy or ...
... streams , and the swollen rivers run discoloured to the sea . Similar floods often result from the melting of snow in spring . During such floods our rivers are generally more turbid than when they are swollen merely by heavy or ...
Page 34
... stream and its affluents become clouded with sediment . It is in tropical and subtropical latitudes , of course , that the most destructive effects of rain are witnessed . During the wet season the rivers of such regions dis- charge ...
... stream and its affluents become clouded with sediment . It is in tropical and subtropical latitudes , of course , that the most destructive effects of rain are witnessed . During the wet season the rivers of such regions dis- charge ...
Page 35
... streams , but much also is dis- lodged by the undermining action of the water itself . Rock - fragments when first introduced are more or less angular , but as they travel down stream they often break up into smaller pieces along ...
... streams , but much also is dis- lodged by the undermining action of the water itself . Rock - fragments when first introduced are more or less angular , but as they travel down stream they often break up into smaller pieces along ...
Page 36
... stream , while rivers that flow through lands whose rocks are readily eroded carry more sediment than rivers of equal volume and velocity traversing regions of more resistant rocks . Should a lake interrupt the current of a river , all ...
... stream , while rivers that flow through lands whose rocks are readily eroded carry more sediment than rivers of equal volume and velocity traversing regions of more resistant rocks . Should a lake interrupt the current of a river , all ...
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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