Earth Sculpture; Or, The Origin of Land-forms |
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Page viii
... Relatively weak and strong Structures - Stages in the Erosion of a Mountain - chain- Forms assumed under Denudation - Ultimate face of Mountain - chains . CHAPTER VI LAND - FORMS IN REGIONS OF HIGHLY FOLDED AND DIS- TURBED STRATA ...
... Relatively weak and strong Structures - Stages in the Erosion of a Mountain - chain- Forms assumed under Denudation - Ultimate face of Mountain - chains . CHAPTER VI LAND - FORMS IN REGIONS OF HIGHLY FOLDED AND DIS- TURBED STRATA ...
Page 6
... relatively recent age , while those occupying such broad tracts as Brazil , the Canadian uplands , etc. , are of vast antiquity . Crys- talline schistose rocks , with associated granites and other igneous rocks , seem everywhere to ...
... relatively recent age , while those occupying such broad tracts as Brazil , the Canadian uplands , etc. , are of vast antiquity . Crys- talline schistose rocks , with associated granites and other igneous rocks , seem everywhere to ...
Page 19
... , known under the name of felspar . The group includes includes nearly all the igneous and most of the metamorphic rocks . The derivative rocks that come under the same head are of relatively small importance AGENTS OF DENUDATION 19.
... , known under the name of felspar . The group includes includes nearly all the igneous and most of the metamorphic rocks . The derivative rocks that come under the same head are of relatively small importance AGENTS OF DENUDATION 19.
Page 20
James Geikie. come under the same head are of relatively small importance . The minerals entering most abundantly into the composition of the felspathic rocks are the felspars ( aluminous silicates of potash , soda , and lime ) , various ...
James Geikie. come under the same head are of relatively small importance . The minerals entering most abundantly into the composition of the felspathic rocks are the felspars ( aluminous silicates of potash , soda , and lime ) , various ...
Page 23
... relatively little import- ance . Amongst them are rock - salt , gypsum , coal and lignite , ironstones , and other ores . All these , doubtless , are very notable and valuable , but they are neither so abundant nor so widely distributed ...
... relatively little import- ance . Amongst them are rock - salt , gypsum , coal and lignite , ironstones , and other ores . All these , doubtless , are very notable and valuable , but they are neither so abundant nor so widely distributed ...
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Common terms and phrases
accumulation Alpine Alps anticlines basalt base-level basins become beds boulder-clay Carboniferous character cirques cliffs coast-lines coasts configuration Cretaceous crust crustal movements crystalline débris denudation deposits depressions depth detritus direction dislocations drainage elevation epigene epigene action epigene agents eroded escarpments feet fiords flow fluvio-glacial fluvio-glacial deposits folds gently geological structure glacial action glacial erosion glaciers gradually ground-moraines hills hollows horizontal strata ice-flow ice-sheet igneous rocks inclined indented infrequently irregular islands joints kind laccoliths lakes land land-forms land-surface lava less limestone low grounds materials mer de glace modified moraines mountain-chain mountain-valleys mountains névé normal faults Old Red Sandstone outcrops owe their origin plain of erosion plateau regions relatively result ridges rock-basins rock-masses sand sandstone schistose schists SECTION sediment slopes Southern Uplands strata streams and rivers superficial surface surface-features synclinal tectonic tend thickness tion tracts traversed underground undulating usually valleys vertical volcanic wind