Earth Sculpture; Or, The Origin of Land-forms |
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Page 6
... continuously vast regions . The enormous tract that extends from the Great Lakes of North America to the shores of the Arctic Ocean is almost entirely occupied by them . Another im mense area of crystalline schistose rocks is met with ...
... continuously vast regions . The enormous tract that extends from the Great Lakes of North America to the shores of the Arctic Ocean is almost entirely occupied by them . Another im mense area of crystalline schistose rocks is met with ...
Page 7
... continuous line , A - B , surface of ground ; the lower continuous line , C - D , = sea- level ; 7 , limestone ; s , sandstones and shales . The great bulk of the derivative rocks being of sedimentary origin , it is obvious that they ...
... continuous line , A - B , surface of ground ; the lower continuous line , C - D , = sea- level ; 7 , limestone ; s , sandstones and shales . The great bulk of the derivative rocks being of sedimentary origin , it is obvious that they ...
Page 9
... continuous line , A - B , = surface of ground ; the 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 ...
... continuous line , A - B , = surface of ground ; the 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 ...
Page 10
... continuous line , A - B , = surface of ground ; lower continuous line , C - D , = sea - level ; anticlines ; ss , synclines ; a x , s x , axes of folds . aa , an equal area , the strata are folded into a series of several anticlines and ...
... continuous line , A - B , = surface of ground ; lower continuous line , C - D , = sea - level ; anticlines ; ss , synclines ; a x , s x , axes of folds . aa , an equal area , the strata are folded into a series of several anticlines and ...
Page 12
... continuous with the corresponding beds on the other side of the fault . From the facts now briefly set forth we may draw certain conclusions . In the first place , the extensive geographical range of the derivative rocks , most of which ...
... continuous with the corresponding beds on the other side of the fault . From the facts now briefly set forth we may draw certain conclusions . In the first place , the extensive geographical range of the derivative rocks , most of which ...
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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