Earth Sculpture; Or, The Origin of Land-forms |
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Page 209
... the aspect assumed by rocks under denudation . In preceding pages we have dis- cussed the origin of the salient features of a land- surface . Looked at broadly , it is obvious that the more elevated and more depressed areas owe their ...
... the aspect assumed by rocks under denudation . In preceding pages we have dis- cussed the origin of the salient features of a land- surface . Looked at broadly , it is obvious that the more elevated and more depressed areas owe their ...
Page 251
... its power , and tend to be piled up in heaps and ridges or spread out in sheets . In this way certain more or less prominent land - features owe their origin directly to wind ; and as we have devoted some space to the consideration of the ...
... its power , and tend to be piled up in heaps and ridges or spread out in sheets . In this way certain more or less prominent land - features owe their origin directly to wind ; and as we have devoted some space to the consideration of the ...
Page 272
... the surface evidence of the effects produced by subterranean erosion . The trough - shaped basins ( kettle - valleys ) referred to above seem to owe their origin in the first place to determinate fissures . These are widened by the action ...
... the surface evidence of the effects produced by subterranean erosion . The trough - shaped basins ( kettle - valleys ) referred to above seem to owe their origin in the first place to determinate fissures . These are widened by the action ...
Page 276
... owe their origin to the under - cutting action of the water . More extensive are the caves often excavated by the sea . These necessarily vary in appearance with the character of the rocks in which they are excavated . The presence of a ...
... owe their origin to the under - cutting action of the water . More extensive are the caves often excavated by the sea . These necessarily vary in appearance with the character of the rocks in which they are excavated . The presence of a ...
Page 278
... ORIGIN . BASINS - SUBMARINE ALL the varied topographical features of the land owe their origin either to subterranean or to superficial agents , or to both . This is true of eleva- tions and depressions alike . It would seem possible ...
... ORIGIN . BASINS - SUBMARINE ALL the varied topographical features of the land owe their origin either to subterranean or to superficial agents , or to both . This is true of eleva- tions and depressions alike . It would seem possible ...
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Common terms and phrases
accumulation Alps anticlines basalt base-level basins become beds Carboniferous character cliffs coast-lines cones configuration Cretaceous crust crustal movements crystalline débris denudation deposits depressions depth detritus direction dislocations drainage elevation epigene action epigene agents eroded escarpments eventually feet fiords flexures flow fluvio-glacial deposits folds fracture gently geological structure glacial action glaciers gradually granite ground-moraines Highlands hills hollows horizontal strata ice-sheet igneous rocks inclined indented infrequently irregular islands joints Jura Mountains laccoliths lakes land land-forms land-surface lava less limestone low grounds masses materials Mesozoic modified moraines mountain-chain mountain-valleys mountains normal faults North Old Red Sandstone outcrops owe their origin Permian plain of erosion plateau regions relatively result ridges rock-basins rock-masses sand sandstones schistose schists Section sediment shales Silurian slopes Southern Uplands strata streams and rivers superficial surface surface-features synclinal tectonic tend thickness tion tracts traversed underground undulating usually valleys vertical volcanic