Earth Sculpture; Or, The Origin of Land-forms |
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Page 8
... limestone ( ) at the top . at the top . In this case we cannot doubt that the horizontal bedding is original - that the strata were accumulated one above the other in . the same order as we see them . sea . Although such horizontal ...
... limestone ( ) at the top . at the top . In this case we cannot doubt that the horizontal bedding is original - that the strata were accumulated one above the other in . the same order as we see them . sea . Although such horizontal ...
Page 22
... limestones of every kind . They vary in character from soft earthy marls and chalks to hard , granular , crystalline limestones and saccharoid marbles . Some are nearly pure carbonate of lime ; others contain larger or smaller ...
... limestones of every kind . They vary in character from soft earthy marls and chalks to hard , granular , crystalline limestones and saccharoid marbles . Some are nearly pure carbonate of lime ; others contain larger or smaller ...
Page 26
... limestone , are simply the insoluble residue of masses of rock , the soluble portions of which have been dissolved and carried away by surface - water . In all regions where rain falls , the result of this chemical action is conspicuous ...
... limestone , are simply the insoluble residue of masses of rock , the soluble portions of which have been dissolved and carried away by surface - water . In all regions where rain falls , the result of this chemical action is conspicuous ...
Page 27
James Geikie. are becoming rotten and disintegrated . In limestone areas it can be shown that sometimes hundreds of feet of rock have thus been gradually and silently re- moved from the surface of the land . And the great depth now and ...
James Geikie. are becoming rotten and disintegrated . In limestone areas it can be shown that sometimes hundreds of feet of rock have thus been gradually and silently re- moved from the surface of the land . And the great depth now and ...
Page 31
... limestone caverns , and the great width and depth of the channels through which sub- terranean rivers reach the sea , help us to appreciate the amount of rock - material which underground water is capable of removing . When we add to ...
... limestone caverns , and the great width and depth of the channels through which sub- terranean rivers reach the sea , help us to appreciate the amount of rock - material which underground water is capable of removing . When we add to ...
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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