Earth Sculpture; Or, The Origin of Land-forms |
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Page 96
... Carboniferous Limestone ; Cr , 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 ...
... Carboniferous Limestone ; Cr , 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 ...
Page 114
... Carboniferous strata ; 3. Jurassic strata ; 4 , Cretaceous strata ; 5 , Tertiary strata ; , S , S , Cretaceous and Tertiary rocks inverted ; 7 , thrust - plane . A similar , but somewhat more complicated , structure appears in the Dent ...
... Carboniferous strata ; 3. Jurassic strata ; 4 , Cretaceous strata ; 5 , Tertiary strata ; , S , S , Cretaceous and Tertiary rocks inverted ; 7 , thrust - plane . A similar , but somewhat more complicated , structure appears in the Dent ...
Page 126
... Carboniferous strata at and above M ; A A , B B , C C , are dislocations . by denudation , that without some knowledge of geo- logical. chains we may read the history of many such vicissi- tudes . So completely have some mountains been ...
... Carboniferous strata at and above M ; A A , B B , C C , are dislocations . by denudation , that without some knowledge of geo- logical. chains we may read the history of many such vicissi- tudes . So completely have some mountains been ...
Page 127
... Carboniferous tracts of Belgium and Northern France . The structure of these regions shows that formerly a considerable range of moun- tains extended between Boulogne and Aix - la - Cha- pelle . At or towards the close of Carboniferous ...
... Carboniferous tracts of Belgium and Northern France . The structure of these regions shows that formerly a considerable range of moun- tains extended between Boulogne and Aix - la - Cha- pelle . At or towards the close of Carboniferous ...
Page 136
... Carboniferous ; b , basalt ; a , agglomerate , etc. in that quarter that we meet with the most extensive and continu- ous accumulations of Old Red Sandstone rocks . Be that as it may , we know that some time before the succeeding Carbon ...
... Carboniferous ; b , basalt ; a , agglomerate , etc. in that quarter that we meet with the most extensive and continu- ous accumulations of Old Red Sandstone rocks . Be that as it may , we know that some time before the succeeding Carbon ...
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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