Earth Sculpture; Or, The Origin of Land-forms |
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Page 9
... of equal length . Here we have a succession of anticlines , or saddle - backs , separated one from another by troughs , or synclines , as they are termed . In other words , the strata are undulating . From these sections INTRODUCTORY 9.
... of equal length . Here we have a succession of anticlines , or saddle - backs , separated one from another by troughs , or synclines , as they are termed . In other words , the strata are undulating . From these sections INTRODUCTORY 9.
Page 10
James Geikie. words , the strata are undulating . From these sections we learn that folds or undulations vary considerably in width . In the region represented by Fig . 2 we have an area six miles in breadth , consisting of a thick ...
James Geikie. words , the strata are undulating . From these sections we learn that folds or undulations vary considerably in width . In the region represented by Fig . 2 we have an area six miles in breadth , consisting of a thick ...
Page 15
... undulating tracts , and be quite unconscious of the fact that geologically we have several times leaped up or jumped down hundreds of feet in a single step . Nay , some rivers flow across dislocations by which the strata have been ...
... undulating tracts , and be quite unconscious of the fact that geologically we have several times leaped up or jumped down hundreds of feet in a single step . Nay , some rivers flow across dislocations by which the strata have been ...
Page 33
... undulating tracts rain washes the finer particles down the slopes and spreads them over the hollows . After exceptionally heavy or long- continued rain this process becomes intensified — fine mud , silt , sand , and grit are swept into ...
... undulating tracts rain washes the finer particles down the slopes and spreads them over the hollows . After exceptionally heavy or long- continued rain this process becomes intensified — fine mud , silt , sand , and grit are swept into ...
Page 50
... undulating , furrowed , and irregular surface . Some alluvial tracts , indeed , have been so cut up by rain and running water that , in the rough , rolling ground over which he toils , the traveller may find it hard to recognise the ...
... undulating , furrowed , and irregular surface . Some alluvial tracts , indeed , have been so cut up by rain and running water that , in the rough , rolling ground over which he toils , the traveller may find it hard to recognise the ...
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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