The Student's Handbook of Physical Geology |
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Page 3
... course of his re- searches . Here the reader may well ask , what are the special observations which the geologist makes , and what is it which he regards as his special business ? If the wide scope already indicated be properly given to ...
... course of his re- searches . Here the reader may well ask , what are the special observations which the geologist makes , and what is it which he regards as his special business ? If the wide scope already indicated be properly given to ...
Page 11
... course , a very difficult matter upon which to obtain any evidence , but the following facts tend to show that it consists of a cool envelope surrounding a heated interior , and that the latter possesses a high temperature of its own ...
... course , a very difficult matter upon which to obtain any evidence , but the following facts tend to show that it consists of a cool envelope surrounding a heated interior , and that the latter possesses a high temperature of its own ...
Page 20
... course of great linear fissures in the earth's crust ; such are the chains of the Andes , the Aleutian Islands , and the Malay Archipelago . These lines of volcanic vents sometimes seem to radiate from a special volcanic centre . If we ...
... course of great linear fissures in the earth's crust ; such are the chains of the Andes , the Aleutian Islands , and the Malay Archipelago . These lines of volcanic vents sometimes seem to radiate from a special volcanic centre . If we ...
Page 21
... course merely a diagram , and the internal structure of a volcano is in reality much more complicated than is there represented . The appearance presented by some of the smaller veins and. Fig . 1. Ideal Section through a Volcanic Cone ...
... course merely a diagram , and the internal structure of a volcano is in reality much more complicated than is there represented . The appearance presented by some of the smaller veins and. Fig . 1. Ideal Section through a Volcanic Cone ...
Page 24
... courses down the slopes and sweeps along the loose volcanic dust and ash , forming muddy torrents , which often work more damage and destruction than the streams of lava . 1 See " Volcanoes , " by J. W. Judd , p . 33 . Besides steam the ...
... courses down the slopes and sweeps along the loose volcanic dust and ash , forming muddy torrents , which often work more damage and destruction than the streams of lava . 1 See " Volcanoes , " by J. W. Judd , p . 33 . Besides steam 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