Earth Sculpture; Or, The Origin of Land-forms |
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Page xi
... Ridge , Green River Plains ( Powell ) . 86 87 88 88 89 90 27 . Isoclinal Folds 28 . Isoclinal Folds 93 94 29. Isoclinal Folds 94 30 . Overfold passing into Reversed Fault , or Overthrust • 95 xii FIGURE LIST OF ILLUSTRATIONS 31 ...
... Ridge , Green River Plains ( Powell ) . 86 87 88 88 89 90 27 . Isoclinal Folds 28 . Isoclinal Folds 93 94 29. Isoclinal Folds 94 30 . Overfold passing into Reversed Fault , or Overthrust • 95 xii FIGURE LIST OF ILLUSTRATIONS 31 ...
Page xii
... Ridges of Pennsylvania ( H. D. Rogers ) 55. Unsymmetrical Folds , giving rise to Escarpments and Ridges 56. Structure of the Ardennes ( after Cornet and Briart ) . 57. Diagrammatic Section across a Plateau of Erosion 58. Section across ...
... Ridges of Pennsylvania ( H. D. Rogers ) 55. Unsymmetrical Folds , giving rise to Escarpments and Ridges 56. Structure of the Ardennes ( after Cornet and Briart ) . 57. Diagrammatic Section across a Plateau of Erosion 58. Section across ...
Page 14
James Geikie. ure and underground structure can be traced . The mountain ridges do not correspond to great swellings of the crust ; the valleys neither lie in trough - shaped strata , nor do they coincide with gaping fractures . Again ...
James Geikie. ure and underground structure can be traced . The mountain ridges do not correspond to great swellings of the crust ; the valleys neither lie in trough - shaped strata , nor do they coincide with gaping fractures . Again ...
Page 46
... ridges which they sometimes traverse ; or , to put it in another way , new mountains may come into existence without deflecting the rivers across whose valleys they may seem at one time to have extended - for the rivers have simply ...
... ridges which they sometimes traverse ; or , to put it in another way , new mountains may come into existence without deflecting the rivers across whose valleys they may seem at one time to have extended - for the rivers have simply ...
Page 65
... ridges gradu- ally crumble down , until at last all abrupt and pro- minent irregularities of surface disappear , and the once elevated plain returns to its former state , that of a gently undulating or approximately flat stretch of low ...
... ridges gradu- ally crumble down , until at last all abrupt and pro- minent irregularities of surface disappear , and the once elevated plain returns to its former state , that of a gently undulating or approximately flat stretch of low ...
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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