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