Earth Sculpture; Or, The Origin of Land-forms |
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Page 14
... find de- pressions at the surface , while the rocks immediately underneath show an anticlinal arrangement ; and , con- versely , where the strata are trough - shaped the sur- face - feature is not a depression but an elevation . In the ...
... find de- pressions at the surface , while the rocks immediately underneath show an anticlinal arrangement ; and , con- versely , where the strata are trough - shaped the sur- face - feature is not a depression but an elevation . In the ...
Page 18
... find out how rocks have been removed , and what has since become of them , we must observe what is taking place under the influence of existing agents of change . How , then , are rocks being affected at present ? We do not pro- ceed ...
... find out how rocks have been removed , and what has since become of them , we must observe what is taking place under the influence of existing agents of change . How , then , are rocks being affected at present ? We do not pro- ceed ...
Page 27
... find them attaining so great a thickness . The decom- posed rock - material encountered in the northern parts of Europe and America has been formed for the most part only since the disappearance of glacial condi- tions , while in ...
... find them attaining so great a thickness . The decom- posed rock - material encountered in the northern parts of Europe and America has been formed for the most part only since the disappearance of glacial condi- tions , while in ...
Page 34
... find their way into the rivers , and finally come to rest in the ocean . The river - systems of the world , then , are the lines along which the waste products of the land are carried seawards . But rivers are much more than mere ...
... find their way into the rivers , and finally come to rest in the ocean . The river - systems of the world , then , are the lines along which the waste products of the land are carried seawards . But rivers are much more than mere ...
Page 39
... find the most cogent evidence of erosion now in action . A little consideration will show that the estimates just referred to do not tell us all the truth concerning denudation . They show us only the amount of waste material which is ...
... find the most cogent evidence of erosion now in action . A little consideration will show that the estimates just referred to do not tell us all the truth concerning denudation . They show us only the amount of waste material which is ...
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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