Earth Sculpture; Or, The Origin of Land-forms |
From inside the book
Results 6-10 of 36
Page 64
... angles will tend to disappear , and a somewhat undulating slope will replace the more strongly marked features which the same rocks would have yielded under arid conditions . Let us now recall what was said as to the cutting up of our ...
... angles will tend to disappear , and a somewhat undulating slope will replace the more strongly marked features which the same rocks would have yielded under arid conditions . Let us now recall what was said as to the cutting up of our ...
Page 73
... would doubtless modify the land - surface as it arose , but for simplicity's sake we shall ignore such action , and suppose that the new - born land exists as an elongated island , the sur- face sloping away at a low angle on either side ...
... would doubtless modify the land - surface as it arose , but for simplicity's sake we shall ignore such action , and suppose that the new - born land exists as an elongated island , the sur- face sloping away at a low angle on either side ...
Page 74
James Geikie. face sloping away at a low angle on either side of a somewhat flattened axis . ( Fig . 12. ) At first , then , the surface coincides with the underground structure —a dome - shaped land formed of dome - shaped strata ...
James Geikie. face sloping away at a low angle on either side of a somewhat flattened axis . ( Fig . 12. ) At first , then , the surface coincides with the underground structure —a dome - shaped land formed of dome - shaped strata ...
Page 75
James Geikie. the strata , and in other places would traverse that at various angles . The strata consist , we shall suppose , of " hard " and " soft " rocks - limestones , sandstones , shales , etc. , and they are well jointed at right ...
James Geikie. the strata , and in other places would traverse that at various angles . The strata consist , we shall suppose , of " hard " and " soft " rocks - limestones , sandstones , shales , etc. , and they are well jointed at right ...
Page 80
... angles we shall meet with certain marked contrasts . In regions where the rivers flow in the same direction as the dip of gently inclined strata , waterfalls are not readily formed . When the outcrop of a relatively hard bed is en ...
... angles we shall meet with certain marked contrasts . In regions where the rivers flow in the same direction as the dip of gently inclined strata , waterfalls are not readily formed . When the outcrop of a relatively hard bed is en ...
Other editions - View all
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