Earth Sculpture; Or, The Origin of Land-forms |
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Page 53
... traversed by the Colorado River of the West , which follows a tortuous course tow- ards west - south - west through a succession of pro- found ravines or cañons . The strata visible at the surface are approximately horizontal , and ...
... traversed by the Colorado River of the West , which follows a tortuous course tow- ards west - south - west through a succession of pro- found ravines or cañons . The strata visible at the surface are approximately horizontal , and ...
Page 57
... traversed by great fractures along which the strata became vertically displaced for thousands of feet . Yet , strange to say , none of these earth - movements succeeded in deflecting the main drainage of the dis- trict . The Colorado ...
... traversed by great fractures along which the strata became vertically displaced for thousands of feet . Yet , strange to say , none of these earth - movements succeeded in deflecting the main drainage of the dis- trict . The Colorado ...
Page 59
... traversed not by one main river only , but by numerous affluents , each with its quota of tributary streams . The running waters will continue to deepen their channels until the gradient by the pro- cess is gradually reduced to a ...
... traversed not by one main river only , but by numerous affluents , each with its quota of tributary streams . The running waters will continue to deepen their channels until the gradient by the pro- cess is gradually reduced to a ...
Page 60
... traversed by natural division - planes or joints , and these in the case of stratified rocks consist of two sets intersecting each other and the planes of bedding at approximately right angles . Horizontal strata are in this way divided ...
... traversed by natural division - planes or joints , and these in the case of stratified rocks consist of two sets intersecting each other and the planes of bedding at approximately right angles . Horizontal strata are in this way divided ...
Page 79
... traversed from left to right by pronounced lines of escarpment rising to many hundreds of feet above the low grounds at their base , and falling away in a long gentle slope in the direction of the dip . When these land - forms were ...
... traversed from left to right by pronounced lines of escarpment rising to many hundreds of feet above the low grounds at their base , and falling away in a long gentle slope in the direction of the dip . When these land - forms were ...
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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