Earth Sculpture; Or, The Origin of Land-forms |
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Page xiii
... Cretaceous Strata , Libyan Desert ( J. Walther ) . • • • 254 $ 1 . Wind Erosion : Stages in the Erosion and Reduction of a Table- mountain ( J. Walther ) . 255 84. Advance of Sand - dunes . 86. Sea - cliff cut in Horizontal Strata 82 ...
... Cretaceous Strata , Libyan Desert ( J. Walther ) . • • • 254 $ 1 . Wind Erosion : Stages in the Erosion and Reduction of a Table- mountain ( J. Walther ) . 255 84. Advance of Sand - dunes . 86. Sea - cliff cut in Horizontal Strata 82 ...
Page 55
... Cretaceous times . Throughout all that long succession of ages the sea would appear never to have been deep , although during the early part of the Carboniferous Period it was probably deeper than in subsequent times . When we consider ...
... Cretaceous times . Throughout all that long succession of ages the sea would appear never to have been deep , although during the early part of the Carboniferous Period it was probably deeper than in subsequent times . When we consider ...
Page 56
... Cretaceous times , cer- tain new crustal movements began - elevation ensued , and the sea finally retired from the district . An ex- tensive lake now occupied the site of the plateau- country for a prolonged period , during which ...
... Cretaceous times , cer- tain new crustal movements began - elevation ensued , and the sea finally retired from the district . An ex- tensive lake now occupied the site of the plateau- country for a prolonged period , during which ...
Page 84
... Cretaceous strata , cutting through the Chalk escarpment between Wallingford and Reading . Although wide regions may be built up of strata FIG . 20 . SECTION ACROSS THE WEALDEN AREA . ( Ramsay . ) a , Upper Cretaceous strata ; b , Lower ...
... Cretaceous strata , cutting through the Chalk escarpment between Wallingford and Reading . Although wide regions may be built up of strata FIG . 20 . SECTION ACROSS THE WEALDEN AREA . ( Ramsay . ) a , Upper Cretaceous strata ; b , Lower ...
Page 96
... Cretaceous ; T Overfold and thrust - plane . Devonian and Carboniferous strata turned upside down above the thrust - plane . approach each other , while in the intervening space the strata are arched into a great anticline . The beds ...
... Cretaceous ; T Overfold and thrust - plane . Devonian and Carboniferous strata turned upside down above the thrust - plane . approach each other , while in the intervening space the strata are arched into a great anticline . The beds ...
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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