Earth Sculpture; Or, The Origin of Land-forms |
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Page 6
... 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 in Brazil . The Highlands of Scotland , the Scandi- navian Peninsula , and ...
... 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 in Brazil . The Highlands of Scotland , the Scandi- navian Peninsula , and ...
Page 7
... lakes and seas . This we are justified in believing by what we know of the accumulation of similar sediments in our own day . The wide flats of our river- valleys , the broad plains that occupy the sites of silted- up lakes , the ...
... lakes and seas . This we are justified in believing by what we know of the accumulation of similar sediments in our own day . The wide flats of our river- valleys , the broad plains that occupy the sites of silted- up lakes , the ...
Page 36
... lake , as the Rhone does at Geneva . The lake , in short , acts as a settling reservoir . By and by , how- ever , the lacustrine hollow becomes silted up and con- verted into an alluvial flat , through which the silt - laden water winds ...
... lake , as the Rhone does at Geneva . The lake , in short , acts as a settling reservoir . By and by , how- ever , the lacustrine hollow becomes silted up and con- verted into an alluvial flat , through which the silt - laden water winds ...
Page 37
... lake , and in time a delta is formed . The growth of the latter necessarily depends partly on the activ- ity of the river and partly upon the depth of the estuary and the action of waves and tidal currents . But if nothing interrupted ...
... lake , and in time a delta is formed . The growth of the latter necessarily depends partly on the activ- ity of the river and partly upon the depth of the estuary and the action of waves and tidal currents . But if nothing interrupted ...
Page 39
... lakes and inland seas . Hitherto we have been treating of the work done by the atmosphere and running water . Some refer- ence has also been made to frost as a potent disin- tegrator of rocks . of rocks . But we have still to consider ...
... lakes and inland seas . Hitherto we have been treating of the work done by the atmosphere and running water . Some refer- ence has also been made to frost as a potent disin- tegrator of rocks . of rocks . But we have still to consider ...
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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