Earth Sculpture; Or, The Origin of Land-forms |
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Page 63
... outcrops of the several strata of harder rock— separated the one from the other by the longer or shorter slopes yielded by the shales . Finally , we may further note that the recession of the cliffs will be much influenced by the rate ...
... outcrops of the several strata of harder rock— separated the one from the other by the longer or shorter slopes yielded by the shales . Finally , we may further note that the recession of the cliffs will be much influenced by the rate ...
Page 73
... outcrops , and the latter with the inclination or dip of the strata . In such regions some streams and rivers not infrequently flow in the direction of dip , and thus cut across the escarpments , while others may traverse the land along ...
... outcrops , and the latter with the inclination or dip of the strata . In such regions some streams and rivers not infrequently flow in the direction of dip , and thus cut across the escarpments , while others may traverse the land along ...
Page 77
... outcrops of " hard " beds forming escarpments . inclination of the underlying strata ; the plateau is therefore a plateau of erosion . The map represents the course of a main stream with its tributaries . The trend of the drainage will ...
... outcrops of " hard " beds forming escarpments . inclination of the underlying strata ; the plateau is therefore a plateau of erosion . The map represents the course of a main stream with its tributaries . The trend of the drainage will ...
Page 78
... outcrops of limestone , which are seen in section at the side . turned in this manner out of their direct course would be compelled to flow along the outcrops until depres- sions in the ridges allowed them to resume their original ...
... outcrops of limestone , which are seen in section at the side . turned in this manner out of their direct course would be compelled to flow along the outcrops until depres- sions in the ridges allowed them to resume their original ...
Page 79
... outcrops of the harder beds would stand up more and more promi- nently . These , however , would not remain unchanged . On the contrary , each bed of hard rock , constantly undermined by the wearing away of the softer under- lying ...
... outcrops of the harder beds would stand up more and more promi- nently . These , however , would not remain unchanged . On the contrary , each bed of hard rock , constantly undermined by the wearing away of the softer under- lying ...
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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