Earth Sculpture; Or, The Origin of Land-forms |
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Page 33
James Geikie. slowly or more rapidly , according to circumstances , from higher to lower levels . In temperate latitudes , where the rainfall is distributed over the year , this transference of material is not so conspicuous as in ...
James Geikie. slowly or more rapidly , according to circumstances , from higher to lower levels . In temperate latitudes , where the rainfall is distributed over the year , this transference of material is not so conspicuous as in ...
Page 34
... lower levels of the materials thus set free . Now and again , it is true , there may be long pauses in the journey - the materi- als may linger in hollows and depressions . Eventu- ally , however , they are again put in motion , and by ...
... lower levels of the materials thus set free . Now and again , it is true , there may be long pauses in the journey - the materi- als may linger in hollows and depressions . Eventu- ally , however , they are again put in motion , and by ...
Page 36
... lower end of the lake , as the Rhone does at Geneva . The lake , in short , acts as a settling reservoir . By and by , how- ever , the lacustrine hollow becomes silted up and con- verted into an alluvial flat , through which the silt ...
... lower end of the lake , as the Rhone does at Geneva . The lake , in short , acts as a settling reservoir . By and by , how- ever , the lacustrine hollow becomes silted up and con- verted into an alluvial flat , through which the silt ...
Page 41
... lower ( a ) . The lower series of sandstones and shales is charged with the remains of marine and brackish - water organisms . and of land - plants . The overlying strata ( AGENTS OF DENUDATION 4I.
... lower ( a ) . The lower series of sandstones and shales is charged with the remains of marine and brackish - water organisms . and of land - plants . The overlying strata ( AGENTS OF DENUDATION 4I.
Page 50
... lower the general level . But however much raised beaches and deltas of recent age may have been modified superficially by subaërial denudation , we must admit that their most character- istic features are original , and due to the mode ...
... lower the general level . But however much raised beaches and deltas of recent age may have been modified superficially by subaërial denudation , we must admit that their most character- istic features are original , and due to the mode ...
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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