Earth Sculpture; Or, The Origin of Land-forms |
From inside the book
Results 6-10 of 54
Page 19
... hard , or even impossible , to say which has played the most effective part in the demolition of rocks . Nevertheless , it will conduce to clearness if we endeavour to consider the operation of each by itself , so far , at least , as ...
... hard , or even impossible , to say which has played the most effective part in the demolition of rocks . Nevertheless , it will conduce to clearness if we endeavour to consider the operation of each by itself , so far , at least , as ...
Page 21
... hard , tough rocks , some of which are capable of being cleaved into thin plates , as roofing - slate . 3. Silicious Rocks . These might be described in general terms as gravel - and - sand rocks . The most abundant and widely ...
... hard , tough rocks , some of which are capable of being cleaved into thin plates , as roofing - slate . 3. Silicious Rocks . These might be described in general terms as gravel - and - sand rocks . The most abundant and widely ...
Page 22
... hard silicious rock . But to this there are exceptions , the stones in some conglomerates consisting of calcareous or of felspathic rocks or of a mixture of many different kinds . A silicious sandstone which has been more or less ...
... hard silicious rock . But to this there are exceptions , the stones in some conglomerates consisting of calcareous or of felspathic rocks or of a mixture of many different kinds . A silicious sandstone which has been more or less ...
Page 30
... hard , indeed , to get a specimen of such rock from the bottom of our deepest quar- ries which is perfectly fresh . Water soaks through interstitial fissures and pores , and finds its way by joints and other division - planes , so that ...
... hard , indeed , to get a specimen of such rock from the bottom of our deepest quar- ries which is perfectly fresh . Water soaks through interstitial fissures and pores , and finds its way by joints and other division - planes , so that ...
Page 45
... hard and resisting rocks will determine the position of the high grounds , while the low grounds will practically coincide with the areas occupied by the more yielding rock - masses . This we shall find holds true to a large extent of ...
... hard and resisting rocks will determine the position of the high grounds , while the low grounds will practically coincide with the areas occupied by the more yielding rock - masses . This we shall find holds true to a large extent of ...
Other editions - View all
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