Earth Sculpture; Or, The Origin of Land-forms |
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Page 1
... FEATURES - ROCKS AND ROCK - STRUCTURES - ARCHITECTURE OF THE EARTH'S CRUST -GENERAL EVIDENCE OF ROCK - REMOVAL . HEN geologists began to inquire into the origin of surface - features , they were at first led to believe that the more ...
... FEATURES - ROCKS AND ROCK - STRUCTURES - ARCHITECTURE OF THE EARTH'S CRUST -GENERAL EVIDENCE OF ROCK - REMOVAL . HEN geologists began to inquire into the origin of surface - features , they were at first led to believe that the more ...
Page 3
... surface - features can be unfolded . No doubt the evidence is sometimes hard to read in all its details , but its general bearing can be readily apprehended . The salient facts , the principal data , are conspicuous enough , and the ...
... surface - features can be unfolded . No doubt the evidence is sometimes hard to read in all its details , but its general bearing can be readily apprehended . The salient facts , the principal data , are conspicuous enough , and the ...
Page 13
... surface of what are now continental areas . But if the earth's crust under ... features . Disturbed rocks are of more fre- quent occurrence than strata ... features of such regions often correspond to a con- siderable extent with the main ...
... surface of what are now continental areas . But if the earth's crust under ... features . Disturbed rocks are of more fre- quent occurrence than strata ... features of such regions often correspond to a con- siderable extent with the main ...
Page 14
... surface - features . The sections already given will serve to illustrate the general fact that underground structure and su- perficial configuration do not necessarily correspond . Thus in Fig . I we have a series of pyramidal mount ...
... surface - features . The sections already given will serve to illustrate the general fact that underground structure and su- perficial configuration do not necessarily correspond . Thus in Fig . I we have a series of pyramidal mount ...
Page 17
... surface - features , we must be convinced , at the same time , that some other factor has aided in the work of shaping out our lands . Earth - movements quite account for the folding and fracturing of strata , for the uplifting of great ...
... surface - features , we must be convinced , at the same time , that some other factor has aided in the work of shaping out our lands . Earth - movements quite account for the folding and fracturing of strata , for the uplifting of great ...
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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