The Student's Handbook of Physical Geology |
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Page 14
... be increased towards the centre of the globe by the pressure arising from the weight of the overlying rocks . It is more a matter of sur- prise that the mean density of the earth should not 14 [ SEC . I. INFLUENCE OF INTERNAL CAUSES .
... be increased towards the centre of the globe by the pressure arising from the weight of the overlying rocks . It is more a matter of sur- prise that the mean density of the earth should not 14 [ SEC . I. INFLUENCE OF INTERNAL CAUSES .
Page 15
... pressure , i.e. if the density was doubled by doubling the pressure , it has been calculated that at the centre of the globe cold steel would be compressed into a fourth of its bulk , and most stone into an eighth . The mean density of ...
... pressure , i.e. if the density was doubled by doubling the pressure , it has been calculated that at the centre of the globe cold steel would be compressed into a fourth of its bulk , and most stone into an eighth . The mean density of ...
Page 17
... pressure which they 1 in spite of the heat . re retards or raises the is to say , an increase of e at which each is fusible . bout the exact relations -point of rocks , and it is are affected by pressure lid or fluid , we may safely ...
... pressure which they 1 in spite of the heat . re retards or raises the is to say , an increase of e at which each is fusible . bout the exact relations -point of rocks , and it is are affected by pressure lid or fluid , we may safely ...
Page 17
... pressure and density within the earth is such that " the increase of pressure varies as the increase in the square of the density . " This law may be otherwise expressed by saying that the increase of pressure for a given small increase ...
... pressure and density within the earth is such that " the increase of pressure varies as the increase in the square of the density . " This law may be otherwise expressed by saying that the increase of pressure for a given small increase ...
Page 17
... pressure which they must sustain may keep them solid in spite of the heat . It is well known that pressure retards or raises the melting - point of most solids , that is to say , an increase of pressure increases the temperature at ...
... pressure which they must sustain may keep them solid in spite of the heat . It is well known that pressure retards or raises the melting - point of most solids , that is to say , an increase of pressure increases the temperature at ...
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Common terms and phrases
accumulated acid action alumina amount angles anticlinal augite basalt beds blocks bottom calcareous called carbonate of lime carbonic acid chalk chemical clay cleavage cliffs coal coast colour consist containing coral cracks crystalline crystals denudation deposits depth described detrition distance district dolerite dykes earth earth's crust elevation erosion excavated fault feet felspar fissures Foraminifera formation formed fragments Geol glacier glauconite gradually granite greensand ground hills horizontal hornblende igneous rocks island joints Jukes lake land lava layers less limestone magnesia mass material matter metamorphic metamorphic rocks mica miles mineral mountain observed occur origin Orthoclase outcrops particles pebbles planes porphyritic portion present pressure produced quartz rain reef river salt sand sandstone shales shells shore side siliceous Silurian slope solid solution sometimes stones strata stratified rocks stream structure sulphate surface synclinal thickness tide tion Trans valley vertical volcanic waves