Earth Sculpture; Or, The Origin of Land-forms |
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Page 28
... joints and the rending asunder of rocks and rock - masses . Hence in Arctic regions and at high levels in temperate and southern latitudes the wholesale shattering of rocks has pro- duced immense accumulations of angular débris . To ...
... joints and the rending asunder of rocks and rock - masses . Hence in Arctic regions and at high levels in temperate and southern latitudes the wholesale shattering of rocks has pro- duced immense accumulations of angular débris . To ...
Page 30
... - ries which is perfectly fresh . Water soaks through interstitial fissures and pores , and finds its way by joints and other division - planes , so that chemical ac- any tion , with resultant rock - decay , is carried 30 EARTH SCULPTURE.
... - ries which is perfectly fresh . Water soaks through interstitial fissures and pores , and finds its way by joints and other division - planes , so that chemical ac- any tion , with resultant rock - decay , is carried 30 EARTH SCULPTURE.
Page 31
... joints , etc. , opening upwards , and thus forms natural springs . All these springs contain mineral matter , derived from the chemical decomposition and solution of rock - constituents . Many , indeed , are so highly impregnated , that ...
... joints , etc. , opening upwards , and thus forms natural springs . All these springs contain mineral matter , derived from the chemical decomposition and solution of rock - constituents . Many , indeed , are so highly impregnated , that ...
Page 35
... joints , and the sharp corners and edges of these get worn away by mutual attrition , and by rasping on the rocky bed . In this manner the several portions gradu- · ally become smoothed and rounded - the process of abrasion resulting ...
... joints , and the sharp corners and edges of these get worn away by mutual attrition , and by rasping on the rocky bed . In this manner the several portions gradu- · ally become smoothed and rounded - the process of abrasion resulting ...
Page 60
... joints , and these in the case of stratified rocks consist of two sets intersecting each other and the planes of bedding at approximately right angles . Horizontal strata are in this way divided up into rudely cuboidal , quadrangu- lar ...
... joints , and these in the case of stratified rocks consist of two sets intersecting each other and the planes of bedding at approximately right angles . Horizontal strata are in this way divided up into rudely cuboidal , quadrangu- lar ...
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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