Earth Sculpture; Or, The Origin of Land-forms |
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Page 59
... level originally attained by the plateau . All the rock that formerly existed between a - b and the surface of the ... base - level - a level not much above that of the sea . The plain - track will gradually extend from the sea inland ...
... level originally attained by the plateau . All the rock that formerly existed between a - b and the surface of the ... base - level - a level not much above that of the sea . The plain - track will gradually extend from the sea inland ...
Page 63
... base - level and ceases to erode , the valley - slopes and cliffs , nevertheless , under the influence of weathering , continue to retire . The débris showered down from above now tends to accumulate below , and thus affords protection ...
... base - level and ceases to erode , the valley - slopes and cliffs , nevertheless , under the influence of weathering , continue to retire . The débris showered down from above now tends to accumulate below , and thus affords protection ...
Page 66
... base - level of erosion , and all their energies are employed in the task of reducing to that level the land over which they flow . Soon or late , however , the outlet of the lake will be deepened , the surface of the latter will fall ...
... base - level of erosion , and all their energies are employed in the task of reducing to that level the land over which they flow . Soon or late , however , the outlet of the lake will be deepened , the surface of the latter will fall ...
Page 67
... base - level of erosion . The horizontal masses under which it lay buried were first deeply incised by the Colorado River and its affluents and their countless tributaries . The strata thus became broken up into innumerable separate ...
... base - level of erosion . The horizontal masses under which it lay buried were first deeply incised by the Colorado River and its affluents and their countless tributaries . The strata thus became broken up into innumerable separate ...
Page 77
... base - level , but some inequalities would still exist - the outcrops of the most durable rocks would here and there project , however slightly , above the general surface . We may LAND - FORMS IN GENTLY INCLINED STRATA 77.
... base - level , but some inequalities would still exist - the outcrops of the most durable rocks would here and there project , however slightly , above the general surface . We may LAND - FORMS IN GENTLY INCLINED STRATA 77.
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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