The Student's Handbook of Physical GeologyG. Bell and Sons, 1884 - 514 pages |
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Page 2
... greater number of existing animals and plants -it was not until all these essential data had been collected and studied that the geologist could realize the processes and operations by which rocks were formed , or could utilize his ...
... greater number of existing animals and plants -it was not until all these essential data had been collected and studied that the geologist could realize the processes and operations by which rocks were formed , or could utilize his ...
Page 10
... greater than that of the true sphere enclosed by it , con- sequently its linear velocity is more rapid than that of the inner sphere , because any point on it is carried round that greater space in the same period of time . Any cause ...
... greater than that of the true sphere enclosed by it , con- sequently its linear velocity is more rapid than that of the inner sphere , because any point on it is carried round that greater space in the same period of time . Any cause ...
Page 11
... greater density , unless there were some counteracting ex- pansive force , and we know of no such force except that of heat . 2. Volcanoes . - The numerous volcanic orifices , which occur here and there all over the earth , and from ...
... greater density , unless there were some counteracting ex- pansive force , and we know of no such force except that of heat . 2. Volcanoes . - The numerous volcanic orifices , which occur here and there all over the earth , and from ...
Page 12
... greater depth , viz . , 2,445 feet , and a careful series of observations were made by the manager , Mr. Bryham , during the process of sink- ing . The following are some of the results obtained : - At a depth of 564 feet , a ...
... greater depth , viz . , 2,445 feet , and a careful series of observations were made by the manager , Mr. Bryham , during the process of sink- ing . The following are some of the results obtained : - At a depth of 564 feet , a ...
Page 14
... greater than that of the rocks at the surface is only natural , because the density of all rocks must 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 ...
... greater than that of the rocks at the surface is only natural , because the density of all rocks must 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 ...
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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