Earth Sculpture; Or, The Origin of Land-forms |
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Page 22
... joints which intersect hard slates and quartz- rock , these being divided generally much in the same way as schists and amorphous masses of crystalline igneous rock . There are not a few kinds of rock other than 22 EARTH SCULPTURE.
... joints which intersect hard slates and quartz- rock , these being divided generally much in the same way as schists and amorphous masses of crystalline igneous rock . There are not a few kinds of rock other than 22 EARTH SCULPTURE.
Page 23
... schist - built up , as these are , of min- erals that differ in colour , density , and expansibility . Even when a rock is homogeneous in composition , it is obvious that the heating and cooling of the surface must give rise to strain ...
... schist - built up , as these are , of min- erals that differ in colour , density , and expansibility . Even when a rock is homogeneous in composition , it is obvious that the heating and cooling of the surface must give rise to strain ...
Page 110
... . SECTION ACROSS THE SWISS ALPS ( A. Heim ) . 7 , Crystalline schists and Palæozoic strata ; 2 , Triassic ; 3 , 4 , Jurassic ; 5 , Cretaceous ; 6 , Eocene ; 7 , Miocene . FIG . 51. SECTION ACROSS Western Part of THE JURA.
... . SECTION ACROSS THE SWISS ALPS ( A. Heim ) . 7 , Crystalline schists and Palæozoic strata ; 2 , Triassic ; 3 , 4 , Jurassic ; 5 , Cretaceous ; 6 , Eocene ; 7 , Miocene . FIG . 51. SECTION ACROSS Western Part of THE JURA.
Page 112
... , form elevations , as in Figs. SECTION ACROSS THE VAL D'UINA ( Gümbel ) . Triassic strata resting on crystalline schists . FIG . 45. SICHELKAMM OF WALLENSTADT ( Heim ) . in a series of sharp overturned flexures . 112 EARTH SCULPTURE.
... , form elevations , as in Figs. SECTION ACROSS THE VAL D'UINA ( Gümbel ) . Triassic strata resting on crystalline schists . FIG . 45. SICHELKAMM OF WALLENSTADT ( Heim ) . in a series of sharp overturned flexures . 112 EARTH SCULPTURE.
Page 113
... schists ; 2 , Permian ; 3 , Bunter ; 4 , Muschelkalk ; 5 , Limestone ( Wetterstein- kalk ) ; 6 , Dolomite ; 7 , Jurassic and Cretaceous . is conspicuous . Nor is this less clearly seen in the more complicated structures of the Alps . In ...
... schists ; 2 , Permian ; 3 , Bunter ; 4 , Muschelkalk ; 5 , Limestone ( Wetterstein- kalk ) ; 6 , Dolomite ; 7 , Jurassic and Cretaceous . is conspicuous . Nor is this less clearly seen in the more complicated structures of the Alps . In ...
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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