Earth Sculpture; Or, The Origin of Land-forms |
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Page 3
... structure or architecture of the earth's crust before we can form any reasonable con- clusion as to the origin of its surface - features . Now , so far as that crust is accessible to observation , it is found to be built up of two kinds ...
... structure or architecture of the earth's crust before we can form any reasonable con- clusion as to the origin of its surface - features . Now , so far as that crust is accessible to observation , it is found to be built up of two kinds ...
Page 8
... structure or arrangement of the rocks from the surface down to the level of the The strata represented consist of a great series of sandstones and shales with one prominent bed of limestone ( ) at the top . at the top . In this case we ...
... structure or arrangement of the rocks from the surface down to the level of the The strata represented consist of a great series of sandstones and shales with one prominent bed of limestone ( ) at the top . at the top . In this case we ...
Page 13
... underlying rocks . In many elevated tracts , however , composed of highly disturbed and contorted strata , no such coincidence of surface - feat- ure and underground structure can be traced . The mountain INTRODUCTORY 13.
... underlying rocks . In many elevated tracts , however , composed of highly disturbed and contorted strata , no such coincidence of surface - feat- ure and underground structure can be traced . The mountain INTRODUCTORY 13.
Page 14
... 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 bears no relation to ...
... 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 bears no relation to ...
Page 16
... structure than by its relation to the rock - masses that surround it . Every mass of granite , then , has cooled and consolidated , probably very slowly , and certainly at a less or greater depth in the earth's crust . When this rock is ...
... structure than by its relation to the rock - masses that surround it . Every mass of granite , then , has cooled and consolidated , probably very slowly , and certainly at a less or greater depth in the earth's crust . When this rock is ...
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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