Earth Sculpture; Or, The Origin of Land-forms |
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Page 341
... tectonic mountains are those which have resulted from the flexuring and fracturing of the earth's crust , deformation - mount- ains , as they may be termed . All the great mount- ain - ranges of the globe come under this group . The ...
... tectonic mountains are those which have resulted from the flexuring and fracturing of the earth's crust , deformation - mount- ains , as they may be termed . All the great mount- ain - ranges of the globe come under this group . The ...
Page 346
... tectonic mountains , from a certain point of view , might be described as mountains of circumdenudation , but it is better to distinguish them . They should be recognised as tectonic mountains through all the various stages of erosion ...
... tectonic mountains , from a certain point of view , might be described as mountains of circumdenudation , but it is better to distinguish them . They should be recognised as tectonic mountains through all the various stages of erosion ...
Page 347
... tectonic valleys , and subsequent or erosion valleys . ( a ) Original or Tectonic Valleys . Of these we distinguish two kinds - valleys which owe their origin to the irregular accumulation or heaping up of ma- terials at the surface ...
... tectonic valleys , and subsequent or erosion valleys . ( a ) Original or Tectonic Valleys . Of these we distinguish two kinds - valleys which owe their origin to the irregular accumulation or heaping up of ma- terials at the surface ...
Page 349
... tectonic from subsequent val- leys . No doubt it is easy enough to distinguish be- tween a young anticlinal mountain and any relict mountain carved out of a plateau . But even the youngest deformation - mountains have sometimes been so ...
... tectonic from subsequent val- leys . No doubt it is easy enough to distinguish be- tween a young anticlinal mountain and any relict mountain carved out of a plateau . But even the youngest deformation - mountains have sometimes been so ...
Page 350
... tectonic valleys are of most frequent occurrence . We can have but little doubt that all the longitudinal rivers of a recent mountain - chain flowed at first in true structural or tectonic hollows . Possibly also the transverse valleys ...
... tectonic valleys are of most frequent occurrence . We can have but little doubt that all the longitudinal rivers of a recent mountain - chain flowed at first in true structural or tectonic hollows . Possibly also the transverse valleys ...
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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