Earth Sculpture; Or, The Origin of Land-forms |
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Page 15
... rest our feet . Faults , then , afford clear evidence of the wholesale removal of rocks from the surface of the land . Such proofs of rock - removal can be appreciated by anyone , and will come frequently before us in the INTRODUCTORY 15.
... rest our feet . Faults , then , afford clear evidence of the wholesale removal of rocks from the surface of the land . Such proofs of rock - removal can be appreciated by anyone , and will come frequently before us in the INTRODUCTORY 15.
Page 16
James Geikie. anyone , and will come frequently before us in the discussion that follows . There is another kind of evidence , however , leading to the same general con- clusion , which may be briefly touched upon at this stage of our ...
James Geikie. anyone , and will come frequently before us in the discussion that follows . There is another kind of evidence , however , leading to the same general con- clusion , which may be briefly touched upon at this stage of our ...
Page 21
... frequently show a fine fissile structure , as in common argillaceous shale ; yet others are hard , tough rocks , some of which are capable of being cleaved into thin plates , as roofing - slate . 3. Silicious Rocks . These might be ...
... frequently show a fine fissile structure , as in common argillaceous shale ; yet others are hard , tough rocks , some of which are capable of being cleaved into thin plates , as roofing - slate . 3. Silicious Rocks . These might be ...
Page 25
... . Such insoluble materials are frequently stained yellow - brown or red , owing to the pressure of iron- oxides . In this way felspathic rocks gradually crum- ble down . Thus , granite , gneiss , basalt AGENTS OF DENUDATION 25.
... . Such insoluble materials are frequently stained yellow - brown or red , owing to the pressure of iron- oxides . In this way felspathic rocks gradually crum- ble down . Thus , granite , gneiss , basalt AGENTS OF DENUDATION 25.
Page 26
... frequently overlie calcar- eous rocks , such as chalk and limestone , are simply the insoluble residue of masses of rock , the soluble portions of which have been dissolved and carried away by surface - water . In all regions where rain ...
... frequently overlie calcar- eous rocks , such as chalk and limestone , are simply the insoluble residue of masses of rock , the soluble portions of which have been dissolved and carried away by surface - water . In all regions where rain ...
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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