Earth Sculpture; Or, The Origin of Land-forms |
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Page 3
... facts , the principal data , are conspicuous enough , and the mode of their interpretation is in a manner self - evident . In setting out upon our present inquiry , however , it is obvious that we ought , in the first place , to know ...
... facts , the principal data , are conspicuous enough , and the mode of their interpretation is in a manner self - evident . In setting out upon our present inquiry , however , it is obvious that we ought , in the first place , to know ...
Page 11
... fact that strata are generally inclined from the horizontal , and frequently curved and folded , it is obvious that they have been subjected to the action of some great disturbing force , for folding and A B -T contortion may affect ...
... fact that strata are generally inclined from the horizontal , and frequently curved and folded , it is obvious that they have been subjected to the action of some great disturbing force , for folding and A B -T contortion may affect ...
Page 12
... facts now briefly set forth we may draw certain conclusions . In the first place , the extensive geographical range of the ... fact that the existing land - surfaces of the globe are composed most frequently of marine strata . There are ...
... facts now briefly set forth we may draw certain conclusions . In the first place , the extensive geographical range of the ... fact that the existing land - surfaces of the globe are composed most frequently of marine strata . There are ...
Page 13
... fact that the earth is a cooling body . As the solid crust sinks down upon the cooling and contracting nu- cleus , it must occupy less superficial space . Hence its rocky framework becomes subjected to enormous tan- gential squeezing ...
... fact that the earth is a cooling body . As the solid crust sinks down upon the cooling and contracting nu- cleus , it must occupy less superficial space . Hence its rocky framework becomes subjected to enormous tan- gential squeezing ...
Page 14
... fact that underground structure and su- perficial configuration do not necessarily correspond . Thus in Fig . I we have a series of pyramidal mount- ains developed in horizontal strata . The slope of the surface , therefore , frequently ...
... fact that underground structure and su- perficial configuration do not necessarily correspond . Thus in Fig . I we have a series of pyramidal mount- ains developed in horizontal strata . The slope of the surface , therefore , frequently ...
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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