Earth Sculpture; Or, The Origin of Land-forms |
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Page xiii
... Erosion : Harder Beds amongst inclined Cretaceous Strata , Libyan Desert ( J. Walther ) . • • • 254 $ 1 . Wind Erosion : Stages in the Erosion and Reduction of a Table- mountain ( J. Walther ) . 255 84. Advance of Sand - dunes . 86. Sea ...
... Erosion : Harder Beds amongst inclined Cretaceous Strata , Libyan Desert ( J. Walther ) . • • • 254 $ 1 . Wind Erosion : Stages in the Erosion and Reduction of a Table- mountain ( J. Walther ) . 255 84. Advance of Sand - dunes . 86. Sea ...
Page 38
... erosion one foot of rock will be removed from the Mississippi basin in 6000 years ; and the Mississippi is not so active a worker as many other rivers . An aver- age of many estimates of the similar work performed by rivers in all ...
... erosion one foot of rock will be removed from the Mississippi basin in 6000 years ; and the Mississippi is not so active a worker as many other rivers . An aver- age of many estimates of the similar work performed by rivers in all ...
Page 39
... 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 swept into the sea . They afford ...
... 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 swept into the sea . They afford ...
Page 40
... erosion . Such is the general conclusion to which we are led by the study of causes now in action . And observation and reflection combine to assure us that subaerial erosion has been equally effective during the formation of all the ...
... erosion . Such is the general conclusion to which we are led by the study of causes now in action . And observation and reflection combine to assure us that subaerial erosion has been equally effective during the formation of all the ...
Page 42
... erosion , whereby the whole land - surface was eventually denuded and planed down . When the work of erosion had been so far completed , the entire region again subsided , and formed the bed of a shallow sea . Under these conditions the ...
... erosion , whereby the whole land - surface was eventually denuded and planed down . When the work of erosion had been so far completed , the entire region again subsided , and formed the bed of a shallow sea . Under these conditions the ...
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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