Earth Sculpture; Or, The Origin of Land-forms |
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Page 4
... The former , therefore , are spoken of as volcanic , the latter as plutonic or hypogene rocks . As it is useful to have some general name for the rocks which owe their origin to the action of epigene agents ( i . e . , the atmosphere ...
... The former , therefore , are spoken of as volcanic , the latter as plutonic or hypogene rocks . As it is useful to have some general name for the rocks which owe their origin to the action of epigene agents ( i . e . , the atmosphere ...
Page 71
... back than Oligocene times . All the land - features are the result of subaërial erosion guided and determined by the petrological character and horizontal arrangement of the strata . The precipitous cliffs of the coast - line owe their ...
... back than Oligocene times . All the land - features are the result of subaërial erosion guided and determined by the petrological character and horizontal arrangement of the strata . The precipitous cliffs of the coast - line owe their ...
Page 108
James Geikie. tudinal river , may now and again succeed in cutting its way back across an anticline so as to tap some ad- jacent synclinal trough . If the ... the mountains owe most of their present elevation — took place 108 EARTH SCULPTURE.
James Geikie. tudinal river , may now and again succeed in cutting its way back across an anticline so as to tap some ad- jacent synclinal trough . If the ... the mountains owe most of their present elevation — took place 108 EARTH SCULPTURE.
Page 109
James Geikie. mountains owe most of their present elevation — took place at a relatively late geological period . Many of the folded and fractured rocks , indeed , are of no greater antiquity than the soft clays and sands over which ...
James Geikie. mountains owe most of their present elevation — took place at a relatively late geological period . Many of the folded and fractured rocks , indeed , are of no greater antiquity than the soft clays and sands over which ...
Page 124
... the shearing of rocks must be attributed to crustal movement , it is clear that hypogene action has played a most important part in the formation of mountains . We may say with truth that all true mountain - ranges owe their origin to ...
... the shearing of rocks must be attributed to crustal movement , it is clear that hypogene action has played a most important part in the formation of mountains . We may say with truth that all true mountain - ranges owe their origin to ...
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Common terms and phrases
accumulation Alpine Alps anticlines basalt base-level basins become beds boulder-clay Carboniferous character cirques cliffs coast-lines coasts configuration Cretaceous crust crustal movements crystalline débris denudation deposits depressions depth detritus direction dislocations drainage elevation epigene epigene action epigene agents eroded escarpments feet fiords flow fluvio-glacial fluvio-glacial deposits folds gently geological structure glacial action glacial erosion glaciers gradually ground-moraines hills hollows horizontal strata ice-flow ice-sheet igneous rocks inclined indented infrequently irregular islands joints kind laccoliths lakes land land-forms land-surface lava less limestone low grounds materials mer de glace modified moraines mountain-chain mountain-valleys mountains névé normal faults Old Red Sandstone outcrops owe their origin plain of erosion plateau regions relatively result ridges rock-basins rock-masses sand Sandstone schistose schists Section sediment slopes Southern Uplands strata streams and rivers superficial surface surface-features synclinal tectonic tend thickness tion tracts traversed underground undulating usually valleys vertical volcanic wind