Earth Sculpture; Or, The Origin of Land-forms |
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Page vii
... Crust - General evidence of Rock - removal . CHAPTER II AGENTS OF DENUDATION Chemical composition of Rocks - Epigene Agents - Insolation and Deflation - Chemical and mechanical action of Rain - Action of Frost ; of Plants and Animals ...
... Crust - General evidence of Rock - removal . CHAPTER II AGENTS OF DENUDATION Chemical composition of Rocks - Epigene Agents - Insolation and Deflation - Chemical and mechanical action of Rain - Action of Frost ; of Plants and Animals ...
Page 1
... 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 striking and prominent of these had come into existence under the ...
... 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 striking and prominent of these had come into existence under the ...
Page 2
... crust , after having passed through many revolutions more or less catastrophic in character , had at last become approximately stable - the occasional earthquakes and volcanic disturbances of recent times being looked upon as only the ...
... crust , after having passed through many revolutions more or less catastrophic in character , had at last become approximately stable - the occasional earthquakes and volcanic disturbances of recent times being looked upon as only the ...
Page 3
... crust before we can form any reasonable con- clusion as to the origin of its surface - features . Now , so far as that crust is accessible to observation , it is found to be built up of two kinds of rock , one set be- ing of igneous ...
... crust before we can form any reasonable con- clusion as to the origin of its surface - features . Now , so far as that crust is accessible to observation , it is found to be built up of two kinds of rock , one set be- ing of igneous ...
Page 7
... crust of the globe , while the majority consider them to be all metamorphic . It is enough for our present pur- pose to know that a pavement of such rocks appears everywhere to underlie the sedimentary fossiliferous formations . R FIG ...
... crust of the globe , while the majority consider them to be all metamorphic . It is enough for our present pur- pose to know that a pavement of such rocks appears everywhere to underlie the sedimentary fossiliferous formations . R FIG ...
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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