Earth Sculpture; Or, The Origin of Land-forms |
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Page 5
... feet in thickness , in others dwindling down to a few yards . In short , we may picture to ourselves each system as consisting of a series of larger and smaller lenticular sheets , irregularly distributed over 1 See Appendix for Table ...
... feet in thickness , in others dwindling down to a few yards . In short , we may picture to ourselves each system as consisting of a series of larger and smaller lenticular sheets , irregularly distributed over 1 See Appendix for Table ...
Page 11
... feet in thickness . Another evident mark of dis- turbance is furnished by the presence of dislocations , or faults , as they are technically termed , along the line of which the rocks have been shifted for , it may be , hundreds and ...
... feet in thickness . Another evident mark of dis- turbance is furnished by the presence of dislocations , or faults , as they are technically termed , along the line of which the rocks have been shifted for , it may be , hundreds and ...
Page 12
... feet , for it is obvious that the coal and fireclay ( 8 , 9 ) , and the strata amongst which they lie on the left - hand side , were formerly continuous with the corresponding beds on the other side of the fault . From the facts now ...
... feet , for it is obvious that the coal and fireclay ( 8 , 9 ) , and the strata amongst which they lie on the left - hand side , were formerly continuous with the corresponding beds on the other side of the fault . From the facts now ...
Page 15
... feet . Not less striking is the evidence of rock - removal furnished by the phenomena of faults . At the sur- face there may be no inequality of level corresponding to that seen below ( see Fig . 5 ) . Obviously , how- ever , a ...
... feet . Not less striking is the evidence of rock - removal furnished by the phenomena of faults . At the sur- face there may be no inequality of level corresponding to that seen below ( see Fig . 5 ) . Obviously , how- ever , a ...
Page 17
... feet , or even yards , we see at once that subterranean action cannot have been directly implicated in the spoliation of the land . How , then , have anticlines been truncated ? What power has removed the strata from the high side of a ...
... feet , or even yards , we see at once that subterranean action cannot have been directly implicated in the spoliation of the land . How , then , have anticlines been truncated ? What power has removed the strata from the high side of a ...
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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