The Student's Handbook of Physical GeologyG. Bell and Sons, 1884 - 514 pages |
From inside the book
Results 1-5 of 64
Page x
... increased by Depres- sion . Deposits in shallow seas . Limits of mechanical deposits . CHAPTER XII . - Marine DEPOSITS . Chemical and Organic § 1. Chemically formed - Gypsum and Rock salt ; Dolomite ; Carbonate of Lime . PAGE 83 97 117 ...
... increased by Depres- sion . Deposits in shallow seas . Limits of mechanical deposits . CHAPTER XII . - Marine DEPOSITS . Chemical and Organic § 1. Chemically formed - Gypsum and Rock salt ; Dolomite ; Carbonate of Lime . PAGE 83 97 117 ...
Page 12
... increase below 300 being about 1 ° Fahr . for every 43 feet of descent . In the granite rocks , however , the temperatures were not quite so high . In a coal - mine at Monkwearmouth , Durham , the tem- perature at a depth of 1,600 feet ...
... increase below 300 being about 1 ° Fahr . for every 43 feet of descent . In the granite rocks , however , the temperatures were not quite so high . In a coal - mine at Monkwearmouth , Durham , the tem- perature at a depth of 1,600 feet ...
Page 13
... increase at different places , it is an undoubted fact that the temperature of the rocks does always increase after passing below the first 50 feet ; and it appears that the average rate of this increase of temperature may be taken at ...
... increase at different places , it is an undoubted fact that the temperature of the rocks does always increase after passing below the first 50 feet ; and it appears that the average rate of this increase of temperature may be taken at ...
Page 14
... 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 .
... 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
... increased in direct proportion to the pressure , i.e. if the density was doubled by doubling the pressure , it has ... increase with the pressure , it does so at a continually diminishing rate , and that a point of approximate maximum ...
... increased in direct proportion to the pressure , i.e. if the density was doubled by doubling the pressure , it has ... increase with the pressure , it does so at a continually diminishing rate , and that a point of approximate maximum ...
Other editions - View all
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