Earth Sculpture; Or, The Origin of Land-forms |
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Page ix
... produced by Glacial Action . CHAPTER XII LAND - FORMS MODIFIED BY OLIAN ACTION Insolation and Deflation in the Sahara - Forms assumed by Gran- itoid Rocks and Horizontal and Inclined Strata - Reduction of Land- surface to a Plain ...
... produced by Glacial Action . CHAPTER XII LAND - FORMS MODIFIED BY OLIAN ACTION Insolation and Deflation in the Sahara - Forms assumed by Gran- itoid Rocks and Horizontal and Inclined Strata - Reduction of Land- surface to a Plain ...
Page 2
... producing the varied configuration of the land . Mountains and valleys belonged to earth's Sturm und Drang period . That wild time had passed away , and now old age , with its lethargy and repose , had supervened . The tumultuous ...
... producing the varied configuration of the land . Mountains and valleys belonged to earth's Sturm und Drang period . That wild time had passed away , and now old age , with its lethargy and repose , had supervened . The tumultuous ...
Page 17
... produced that trunca- tion and discontinuity of beds which is so common a feature of derivative rocks all the world over ? And how shall we account for the presence at the sur- face of deep - seated plutonic rocks and metamorphic masses ...
... produced that trunca- tion and discontinuity of beds which is so common a feature of derivative rocks all the world over ? And how shall we account for the presence at the sur- face of deep - seated plutonic rocks and metamorphic masses ...
Page 24
... produced by alternate heat- ing and cooling are very marked . The rocks are cracked and shattered to a depth of several inches ; the surfaces peel off , and are rapidly disintegrated and pulverised . Wind then catches up the loose ma ...
... produced by alternate heat- ing and cooling are very marked . The rocks are cracked and shattered to a depth of several inches ; the surfaces peel off , and are rapidly disintegrated and pulverised . Wind then catches up the loose ma ...
Page 51
... , and little or no superficial flow is possible . But in the case of the more impervious deposits rain is absorbed very sparingly , and naturally tends to produce inequalities as it LAND - FORMS IN HORIZONTAL STRATA 51.
... , and little or no superficial flow is possible . But in the case of the more impervious deposits rain is absorbed very sparingly , and naturally tends to produce inequalities as it LAND - FORMS IN HORIZONTAL STRATA 51.
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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