Earth Sculpture; Or, The Origin of Land-forms |
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Page 7
... HORIZONTAL STRATA . The upper continuous line , A - B , = surface of ground ; the lower continuous line , C - D , level ; 7 , limestone ; s , sandstones and shales . = sea- The great bulk of the derivative rocks being of sedimentary ...
... HORIZONTAL STRATA . The upper continuous line , A - B , = surface of ground ; the lower continuous line , C - D , level ; 7 , limestone ; s , sandstones and shales . = sea- The great bulk of the derivative rocks being of sedimentary ...
Page 8
... strata alike . Here , for example ( Fig . 1 ) , is a section across a country , the superficial rock - masses of which are horizontally arranged . The upper line of the section ( A - B ) represents , of course , the surface of the ...
... strata alike . Here , for example ( Fig . 1 ) , is a section across a country , the superficial rock - masses of which are horizontally arranged . The upper line of the section ( A - B ) represents , of course , the surface of the ...
Page 9
... strata are arranged in the form of a truncated arch , or anticline . At X ... horizontal , but from this point they dip on the right towards B , and on ... strata are undulating . From these sections INTRODUCTORY 9.
... strata are arranged in the form of a truncated arch , or anticline . At X ... horizontal , but from this point they dip on the right towards B , and on ... strata are undulating . From these sections INTRODUCTORY 9.
Page 11
... strata ; in other words , the order of succession appears to be inverted . From the fact that strata are generally inclined from the horizontal , and frequently curved and folded , it is obvious that they have been subjected to the ...
... strata ; in other words , the order of succession appears to be inverted . From the fact that strata are generally inclined from the horizontal , and frequently curved and folded , it is obvious that they have been subjected to the ...
Page 14
... strata , nor do they coincide with gaping fractures . Again , many considerable mountains are built up of rocks which are not convoluted at all , but arranged in horizontal beds . More than this , many plateaux and even lowlands are ...
... strata , nor do they coincide with gaping fractures . Again , many considerable mountains are built up of rocks which are not convoluted at all , but arranged in horizontal beds . More than this , many plateaux and even lowlands are ...
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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