The Student's Handbook of Physical Geology |
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Page vi
... direction to the development of geological history , or in another to the explanation of terrestrial scenery and topography , and if the development of the earth's history is the peculiar theme of geology , it follows that the ...
... direction to the development of geological history , or in another to the explanation of terrestrial scenery and topography , and if the development of the earth's history is the peculiar theme of geology , it follows that the ...
Page 21
... directions . It will readily be imagined that when molten lava is being forced up inside a volcano , some of it will be injected into any cracks or fissures which may exist , or which are caused by the impelling force . Sometimes the ...
... directions . It will readily be imagined that when molten lava is being forced up inside a volcano , some of it will be injected into any cracks or fissures which may exist , or which are caused by the impelling force . Sometimes the ...
Page 28
... direction was from north to south , and its length 12 miles . It emitted a most vivid light , indicating that the fissure was filled with incandescent lava , probably to the height of an orifice not far from Monte Rossi , which at that ...
... direction was from north to south , and its length 12 miles . It emitted a most vivid light , indicating that the fissure was filled with incandescent lava , probably to the height of an orifice not far from Monte Rossi , which at that ...
Page 31
... direction by dykes and veins of lava ( see fig . 2 , △ ) . Etna . - This volcanic cone rises majestically to the height of more than two miles ( 10,872 feet ) , the circumference of its base exceeding 180 miles . Compared with this pro ...
... direction by dykes and veins of lava ( see fig . 2 , △ ) . Etna . - This volcanic cone rises majestically to the height of more than two miles ( 10,872 feet ) , the circumference of its base exceeding 180 miles . Compared with this pro ...
Page 38
... direction of fissures and by the use of instruments called seismometers , Mr. Mallet shows how it is possible to determine the direction and the angle of emergence of the wave - path , and thus to calculate the position and depth of the ...
... direction of fissures and by the use of instruments called seismometers , Mr. Mallet shows how it is possible to determine the direction and the angle of emergence of the wave - path , and thus to calculate the position and depth of the ...
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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