Earth Sculpture; Or, The Origin of Land-forms |
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Page xiii
... Granite Plain of Granite overlooked by Mountains of Schists , etc. 74. Diagrammatic Section of a Laccolith showing Dome - shaped Eleva- tion of Surface above the Intrusive Rock ( after G. K. Gilbert ) View of Necks - Cores of old ...
... Granite Plain of Granite overlooked by Mountains of Schists , etc. 74. Diagrammatic Section of a Laccolith showing Dome - shaped Eleva- tion of Surface above the Intrusive Rock ( after G. K. Gilbert ) View of Necks - Cores of old ...
Page 6
... granites and other igneous rocks , seem everywhere to underlie the sedimentary fossiliferous formations . Very often the latter are separated by a broadly marked line of demarcation from the schists , granites , etc. , upon which they ...
... granites and other igneous rocks , seem everywhere to underlie the sedimentary fossiliferous formations . Very often the latter are separated by a broadly marked line of demarcation from the schists , granites , etc. , upon which they ...
Page 16
... granite , a rock believed to be of deep - seated origin . Its plutonic character is evinced not less by its composition and structure than by its relation to the rock - masses that surround it . Every mass of granite , then , has cooled ...
... granite , a rock believed to be of deep - seated origin . Its plutonic character is evinced not less by its composition and structure than by its relation to the rock - masses that surround it . Every mass of granite , then , has cooled ...
Page 20
... granite . The crystalline schists are equally variable as regards texture . They differ , however , from the igneous rocks in structure . While the latter are confusedly crystalline , the schists show a kind of streaky structure or ...
... granite . The crystalline schists are equally variable as regards texture . They differ , however , from the igneous rocks in structure . While the latter are confusedly crystalline , the schists show a kind of streaky structure or ...
Page 23
... granite , gneiss , and mica - 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 ...
... granite , gneiss , and mica - 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 ...
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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