Earth Sculpture; Or, The Origin of Land-forms |
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Page 13
... movements of the solid crust have taken place . Such crustal dis- turbances are probably in chief measure due to the fact that the earth is a cooling body . As the solid crust sinks down upon the cooling and contracting nu- cleus , it ...
... movements of the solid crust have taken place . Such crustal dis- turbances are probably in chief measure due to the fact that the earth is a cooling body . As the solid crust sinks down upon the cooling and contracting nu- cleus , it ...
Page 17
... crust . While we may safely infer , from the general phe- nomena of geological structure , that earth - movements ... movements quite account for the folding and fracturing of strata , for the uplifting of great mount- ain masses , but they ...
... crust . While we may safely infer , from the general phe- nomena of geological structure , that earth - movements ... movements quite account for the folding and fracturing of strata , for the uplifting of great mount- ain masses , but they ...
Page 41
... crustal movements , entered FIG . 6. SECTION ACROSS UNCONFORMABLE STRATA . a a , beds of sandstone , shale , etc .; bb , conglomerates and sandstone resting discordantly or unconformably upon a a ; u u , line of unconformity . into the ...
... crustal movements , entered FIG . 6. SECTION ACROSS UNCONFORMABLE STRATA . a a , beds of sandstone , shale , etc .; bb , conglomerates and sandstone resting discordantly or unconformably upon a a ; u u , line of unconformity . into the ...
Page 47
... crustal movement , the surface - features are such as only epigene action can account for . Original irregularities ... movements have had a large share in the production of surface - features . It is not necessary for our purpose to inquire ...
... crustal movement , the surface - features are such as only epigene action can account for . Original irregularities ... movements have had a large share in the production of surface - features . It is not necessary for our purpose to inquire ...
Page 48
... crustal movements are of two kinds , horizontal and vertical . Folding and its accompany- ing phenomena are ... crustal movement . In certain regions so great has been the horizontal thrust , that masses of rock , thousands of feet in ...
... crustal movements are of two kinds , horizontal and vertical . Folding and its accompany- ing phenomena are ... crustal movement . In certain regions so great has been the horizontal thrust , that masses of rock , thousands of feet in ...
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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