Earth Sculpture; Or, The Origin of Land-forms |
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Page 8
... tend to be inclined . In many regions the inclination , or dip , as it is termed , is some- times very high - not seldom indeed the beds are seen standing on end , like rows of books in a library . This last appearance of extreme ...
... tend to be inclined . In many regions the inclination , or dip , as it is termed , is some- times very high - not seldom indeed the beds are seen standing on end , like rows of books in a library . This last appearance of extreme ...
Page 23
... tends to disintegration , for the materials of which they are composed often yield unequally to strain or tension . This is particularly the case with many crys- talline felspathic rocks , such as coarse - grained granite , gneiss , and ...
... tends to disintegration , for the materials of which they are composed often yield unequally to strain or tension . This is particularly the case with many crys- talline felspathic rocks , such as coarse - grained granite , gneiss , and ...
Page 25
... tends , in short , to transport all loose material from the scene of its origin to the borders of the desert . In latitudes like our own , insolation doubtless shares in the disintegration of rocks , but the most conspicu- ous agent ...
... tends , in short , to transport all loose material from the scene of its origin to the borders of the desert . In latitudes like our own , insolation doubtless shares in the disintegration of rocks , but the most conspicu- ous agent ...
Page 26
... tend to fall an easy prey . If they contain few or no impurities , they " weather " with little or no crust ; the rock is simply dissolved . Lime- stones , however , are seldom quite so pure as this , but are usually impregnated in a ...
... tend to fall an easy prey . If they contain few or no impurities , they " weather " with little or no crust ; the rock is simply dissolved . Lime- stones , however , are seldom quite so pure as this , but are usually impregnated in a ...
Page 44
... tend to yield and crumble away unequally . It follows from this that denudation will be retarded or hastened according as the rocks succumb slowly or more rapidly to the action of eroding agents . Given an elevated plane - surface of ...
... tend to yield and crumble away unequally . It follows from this that denudation will be retarded or hastened according as the rocks succumb slowly or more rapidly to the action of eroding agents . Given an elevated plane - surface of ...
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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