Earth Sculpture; Or, The Origin of Land-forms |
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Page 11
... dislocations , or faults , as they are technically termed , along the line of which the rocks have been shifted for ... DISLOCATED STRATA . f , normal fault , inclined in the direction of downthrow . INTRODUCTORY.
... dislocations , or faults , as they are technically termed , along the line of which the rocks have been shifted for ... DISLOCATED STRATA . f , normal fault , inclined in the direction of downthrow . INTRODUCTORY.
Page 13
... dislocations by which rocks of all kinds are traversed , clearly demonstrate that movements of the solid crust have taken place . Such crustal dis- turbances are probably in chief measure due to the fact that the earth is a cooling body ...
... dislocations by which rocks of all kinds are traversed , clearly demonstrate that movements of the solid crust have taken place . Such crustal dis- turbances are probably in chief measure due to the fact that the earth is a cooling body ...
Page 15
... dislocations often interrupt the continuity of the strata in our coal- fields . In such regions we may traverse level or gently undulating tracts , and be quite unconscious of the fact that geologically we have several times leaped up ...
... dislocations often interrupt the continuity of the strata in our coal- fields . In such regions we may traverse level or gently undulating tracts , and be quite unconscious of the fact that geologically we have several times leaped up ...
Page 48
... dislocations known as normal faults . Normal faults are more or less vertical displacements , often of small amount , but not infrequently very great . Many are vast rents traversing the crust in some determinate direction , the rocks ...
... dislocations known as normal faults . Normal faults are more or less vertical displacements , often of small amount , but not infrequently very great . Many are vast rents traversing the crust in some determinate direction , the rocks ...
Page 126
... above M ; A A , B B , C C , are dislocations . by denudation , that without some knowledge of geo- logical. chains we may read the history of many such vicissi- tudes . So completely have some mountains been removed. 126 EARTH SCULPTURE.
... above M ; A A , B B , C C , are dislocations . by denudation , that without some knowledge of geo- logical. chains we may read the history of many such vicissi- tudes . So completely have some mountains been removed. 126 EARTH SCULPTURE.
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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