Earth Sculpture; Or, The Origin of Land-forms |
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Page vii
... Epigene Agents - Insolation and Deflation - Chemical and mechanical action of Rain - Action of Frost ; of Plants and Animals ; of underground Water ; of Brooks and Rivers - Rate of Denudation - Denudation and Sedimentation go hand in ...
... Epigene Agents - Insolation and Deflation - Chemical and mechanical action of Rain - Action of Frost ; of Plants and Animals ; of underground Water ; of Brooks and Rivers - Rate of Denudation - Denudation and Sedimentation go hand in ...
Page 4
... epigene agents ( i . e . , the atmosphere , terrestrial water , ice , the sea , and life ) , we may term these derivative , since they have been built up chiefly out of the relics of pre - ex- isting rocks and the débris of plants and ...
... epigene agents ( i . e . , the atmosphere , terrestrial water , ice , the sea , and life ) , we may term these derivative , since they have been built up chiefly out of the relics of pre - ex- isting rocks and the débris of plants and ...
Page 18
James Geikie. CHAPTER II AGENTS OF DENUDATION CHEMICAL COMPOSITION OF ROCKS - EPIGENE AGENTS - INSOLA- TION AND DEFLATION - CHEMICAL AND MECHANICAL ACTION OF RAIN - ACTION OF FROST ; OF PLANTS AND ANIMALS ; OF UNDERGROUND WATER ; OF ...
James Geikie. CHAPTER II AGENTS OF DENUDATION CHEMICAL COMPOSITION OF ROCKS - EPIGENE AGENTS - INSOLA- TION AND DEFLATION - CHEMICAL AND MECHANICAL ACTION OF RAIN - ACTION OF FROST ; OF PLANTS AND ANIMALS ; OF UNDERGROUND WATER ; OF ...
Page 19
... epigene or superficial agents of change . As these agents are often associated in their work , it is sometimes hard , or even impossible , to say which has played the most effective part in the demolition of rocks . Nevertheless , it ...
... epigene or superficial agents of change . As these agents are often associated in their work , it is sometimes hard , or even impossible , to say which has played the most effective part in the demolition of rocks . Nevertheless , it ...
Page 23
... epigene agents attack and reduce rocks . And first , we may note that rocks at the surface are everywhere subject to changes of temperature - warmed by day and during summer , cooled at night and during win- ter . Thus they alternately ...
... epigene agents attack and reduce rocks . And first , we may note that rocks at the surface are everywhere subject to changes of temperature - warmed by day and during summer , cooled at night and during win- ter . Thus they alternately ...
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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