Earth Sculpture; Or, The Origin of Land-forms |
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Page 7
... lower continuous line , C - D , level ; 7 , limestone ; s , sandstones and shales . = sea- The great bulk of the derivative rocks being of sedimentary origin , it is obvious that they must have been at the time of their formation spread ...
... lower continuous line , C - D , level ; 7 , limestone ; s , sandstones and shales . = sea- The great bulk of the derivative rocks being of sedimentary origin , it is obvious that they must have been at the time of their formation spread ...
Page 8
... lower we shall take to be the level of the sea . The section thus shows the geological structure or arrangement of the rocks from the surface down to the level of the The strata represented consist of a great series of sandstones and ...
... lower we shall take to be the level of the sea . The section thus shows the geological structure or arrangement of the rocks from the surface down to the level of the The strata represented consist of a great series of sandstones and ...
Page 9
... lower continuous line , C - D , = sea- level ; X - Y , = vertical axis . beds are approximately horizontal , but from this point they dip on the right towards B , and on the left in the direction of A. Note further that the angle of ...
... lower continuous line , C - D , = sea- level ; X - Y , = vertical axis . beds are approximately horizontal , but from this point they dip on the right towards B , and on the left in the direction of A. Note further that the angle of ...
Page 10
... lower continuous line , C - D , = sea - level ; a a , anticlines ; ss , synclines ; a x , s x , axes of folds . an equal area , the strata are folded into a series of several anticlines and synclines . In both regions the anticlines are ...
... lower continuous line , C - D , = sea - level ; a a , anticlines ; ss , synclines ; a x , s x , axes of folds . an equal area , the strata are folded into a series of several anticlines and synclines . In both regions the anticlines are ...
Page 30
... lower latitudes the most impressive evidence of disintegration is the great thickness attained by rotted rock in positions where it is not liable to be readily swept away by running water . Hitherto we have been considering the ...
... lower latitudes the most impressive evidence of disintegration is the great thickness attained by rotted rock in positions where it is not liable to be readily swept away by running water . Hitherto we have been considering the ...
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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