Earth Sculpture; Or, The Origin of Land-forms |
From inside the book
Results 11-15 of 25
Page 144
... fracture . In short , although the average slope of the ground determined the general direction of the drainage , the corrugated and often much diversified surface of the plateau must have led to endless deflection of the water - flow ...
... fracture . In short , although the average slope of the ground determined the general direction of the drainage , the corrugated and often much diversified surface of the plateau must have led to endless deflection of the water - flow ...
Page 145
... fracture ; and the same is the case with Glen Docherty and Loch Maree . These lines of fractures no doubt showed at the surface of the plateau when it was first uplifted , and so determined the di- rection of drainage and erosion . But ...
... fracture ; and the same is the case with Glen Docherty and Loch Maree . These lines of fractures no doubt showed at the surface of the plateau when it was first uplifted , and so determined the di- rection of drainage and erosion . But ...
Page 150
... fractures by which rocks are frequently traversed . These , as we saw , are of two kinds - normal faults and reversed faults or over- thrusts . The latter have been sufficiently referred to in connection with the appearances presented ...
... fractures by which rocks are frequently traversed . These , as we saw , are of two kinds - normal faults and reversed faults or over- thrusts . The latter have been sufficiently referred to in connection with the appearances presented ...
Page 152
... fracture , with little or no accompanying rock - displacement . But as it continues the amount of downthrow gradually increases until a maximum is reached , after which the displacement usually de- creases until finally the fault dies ...
... fracture , with little or no accompanying rock - displacement . But as it continues the amount of downthrow gradually increases until a maximum is reached , after which the displacement usually de- creases until finally the fault dies ...
Page 161
... fractures - under- ground structure and surface- configuration to a large extent coincide . But everywhere also we observe the evidence of ero- sion and denudation . Great sheets of rock have been grad- ually removed from the surface ...
... fractures - under- ground structure and surface- configuration to a large extent coincide . But everywhere also we observe the evidence of ero- sion and denudation . Great sheets of rock have been grad- ually removed from the surface ...
Other editions - View all
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