Earth Sculpture; Or, The Origin of Land-forms |
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Page 9
... direction of A. Note further that the angle of inclination is the same on each side of the anticline ; in other words , the anticlinal axis ( X - Y ) is vertical . From A to B the distance we shall suppose is six miles . The succeeding ...
... direction of A. Note further that the angle of inclination is the same on each side of the anticline ; in other words , the anticlinal axis ( X - Y ) is vertical . From A to B the distance we shall suppose is six miles . The succeeding ...
Page 11
... direction of downthrow . contortion may affect masses of strata many thousands of feet in thickness . Another evident mark of dis- turbance is furnished by the presence of dislocations , or faults , as they are technically termed ...
... direction of downthrow . contortion may affect masses of strata many thousands of feet in thickness . Another evident mark of dis- turbance is furnished by the presence of dislocations , or faults , as they are technically termed ...
Page 45
... it presented when rains and rivers were just beginning the work of erosion . For it is obvious that the direction of the drainage must have been determined in the first place by the original LAND - FORMS IN HORIZONTAL STRATA 45.
... it presented when rains and rivers were just beginning the work of erosion . For it is obvious that the direction of the drainage must have been determined in the first place by the original LAND - FORMS IN HORIZONTAL STRATA 45.
Page 46
... direction . When it has been once fairly established , a large river may outlive many revolutions of the surface . River - valleys are not seldom older than the mountain - ridges which they sometimes traverse ; or , to put it in another ...
... direction . When it has been once fairly established , a large river may outlive many revolutions of the surface . River - valleys are not seldom older than the mountain - ridges which they sometimes traverse ; or , to put it in another ...
Page 48
... direction of crustal movement . In certain regions so great has been the horizontal thrust , that masses of rock , thousands of feet in thickness , have sheared under the pressure and travelled forwards for miles , older rocks being ...
... direction of crustal movement . In certain regions so great has been the horizontal thrust , that masses of rock , thousands of feet in thickness , have sheared under the pressure and travelled forwards for miles , older rocks being ...
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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