Earth Sculpture; Or, The Origin of Land-forms |
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Page 17
... side of a fault ? What , in a word , has produced that trunca- tion and discontinuity of beds which is so common a feature of derivative rocks all the world over ? And how shall we account for the presence at the sur- face of deep ...
... side of a fault ? What , in a word , has produced that trunca- tion and discontinuity of beds which is so common a feature of derivative rocks all the world over ? And how shall we account for the presence at the sur- face of deep ...
Page 48
... side in the direction of crustal movement . In certain regions so great has been the horizontal thrust , that masses of rock , thousands of feet in thickness , have sheared under the pressure and travelled forwards for miles , older ...
... side in the direction of crustal movement . In certain regions so great has been the horizontal thrust , that masses of rock , thousands of feet in thickness , have sheared under the pressure and travelled forwards for miles , older ...
Page 64
... , and may even be in large part replaced by continuous slopes . Again , each flat- topped segment of the denuded area , eaten into on all sides , will continually contract , the bounding cliffs and 64 EARTH SCULPTURE.
... , and may even be in large part replaced by continuous slopes . Again , each flat- topped segment of the denuded area , eaten into on all sides , will continually contract , the bounding cliffs and 64 EARTH SCULPTURE.
Page 65
James Geikie. sides , will continually contract , the bounding cliffs and slopes retiring step by step until they eventually meet atop . The flat summit now disappears , and is replaced by a sharp crest , ridge , peak , or rounded top ...
James Geikie. sides , will continually contract , the bounding cliffs and slopes retiring step by step until they eventually meet atop . The flat summit now disappears , and is replaced by a sharp crest , ridge , peak , or rounded top ...
Page 69
... sides into the sea . The larger ones show more diversity of surface , but possess very little level land . All have a mountainous character , and , owing to the similarity of the rocks and their arrangement , exhibit little variety of ...
... sides into the sea . The larger ones show more diversity of surface , but possess very little level land . All have a mountainous character , and , owing to the similarity of the rocks and their arrangement , exhibit little variety of ...
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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