The Student's Handbook of Physical Geology |
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Page 4
... forces , it is chiefly by aid of their fossil contents that their true succession and superposition can be satis- factorily determined . Practically it has been found that while a slight ac- quaintance with the characters of some ...
... forces , it is chiefly by aid of their fossil contents that their true succession and superposition can be satis- factorily determined . Practically it has been found that while a slight ac- quaintance with the characters of some ...
Page 10
... force of the rotation and the centripetal force due to the attraction of gravity in the mass . The fact that the earth has this form raises a strong presumption that its condition was at one time sufficiently plastic to allow it to ...
... force of the rotation and the centripetal force due to the attraction of gravity in the mass . The fact that the earth has this form raises a strong presumption that its condition was at one time sufficiently plastic to allow it to ...
Page 11
... force of gravitation . This force would probably compress the rocks into a much closer and denser condition , and so cause the mass of the earth to have a greater density , unless there were some counteracting ex- pansive force , and we ...
... force of gravitation . This force would probably compress the rocks into a much closer and denser condition , and so cause the mass of the earth to have a greater density , unless there were some counteracting ex- pansive force , and we ...
Page 15
... force of heat would partially counteract the compressing force of gravity , so as to pre- vent the materials of the interior from being so greatly increased in density . Lastly , it is possible that the heat of the interior may be so ...
... force of heat would partially counteract the compressing force of gravity , so as to pre- vent the materials of the interior from being so greatly increased in density . Lastly , it is possible that the heat of the interior may be so ...
Page 21
... force . Sometimes the lava cools and solidifies in these cracks without making its way to the surface , forming veins or walls of solid stone which are called dykes by geologists . Such dykes occur by hundreds in every volcanic cone ...
... force . Sometimes the lava cools and solidifies in these cracks without making its way to the surface , forming veins or walls of solid stone which are called dykes by geologists . Such dykes occur by hundreds in every volcanic cone ...
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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