Earth Sculpture; Or, The Origin of Land-forms |
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Page 13
... 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 . As the solid crust sinks down upon the ...
... 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 . As the solid crust sinks down upon the ...
Page 20
... Igneous rocks and schists are traversed by cracks and fissures which usually ramify irregularly in all directions . In many bedded igneous rocks ( lavas ) , * 1 however , these cracks , or " joints , " 20 EARTH SCULPTURE.
... Igneous rocks and schists are traversed by cracks and fissures which usually ramify irregularly in all directions . In many bedded igneous rocks ( lavas ) , * 1 however , these cracks , or " joints , " 20 EARTH SCULPTURE.
Page 21
... traversed by cracks and fissures of one sort or another . It is further to be noted that these rocks , in common with rocks of all kinds , are more or less porous , and therefore liable to be permeated , however slowly , by percolating ...
... traversed by cracks and fissures of one sort or another . It is further to be noted that these rocks , in common with rocks of all kinds , are more or less porous , and therefore liable to be permeated , however slowly , by percolating ...
Page 36
... traversing regions of more resistant rocks . Should a lake interrupt the current of a river , all the gravel , sand , and mud may be intercepted , and the stream will then issue clear and pellucid at the lower end of the lake , as the ...
... traversing regions of more resistant rocks . Should a lake interrupt the current of a river , all the gravel , sand , and mud may be intercepted , and the stream will then issue clear and pellucid at the lower end of the lake , as the ...
Page 48
... traversing the crust in some determinate direction , the rocks on one side of the fault having subsided for hundreds or even for thousands of feet . We may reserve for the present , however , any further discussion of the rock ...
... traversing the crust in some determinate direction , the rocks on one side of the fault having subsided for hundreds or even for thousands of feet . We may reserve for the present , however , any further discussion of the rock ...
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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