The Student's Handbook of Physical GeologyG. Bell, 1892 - 666 pages |
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Page xii
... Granite . CHAPTER XI . - IGNEOUS ROCKS ( continued ) · B. Veins and Dykes : -Connection between Plutonic and Volcanic Rocks ; Granite Tongues and Veins ; Segre- gation Veins ; Dykes and Elvans ; Sills ; Laccolites . c . Interbedded ...
... Granite . CHAPTER XI . - IGNEOUS ROCKS ( continued ) · B. Veins and Dykes : -Connection between Plutonic and Volcanic Rocks ; Granite Tongues and Veins ; Segre- gation Veins ; Dykes and Elvans ; Sills ; Laccolites . c . Interbedded ...
Page 12
... 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 ranges between 78 ° and 80 ° , and observations showed that the increase in de ...
... 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 ranges between 78 ° and 80 ° , and observations showed that the increase in de ...
Page 52
... granite at a rate of 1,665 feet per second . Shattered granite Slate 99 " " 1,306 1,089 Wet sand " " 99 825 99 99 By observing the direction of fissures and by the use of instruments called seismometers , Mr. Mallet believed it possible ...
... granite at a rate of 1,665 feet per second . Shattered granite Slate 99 " " 1,306 1,089 Wet sand " " 99 825 99 99 By observing the direction of fissures and by the use of instruments called seismometers , Mr. Mallet believed it possible ...
Page 63
... granite , and twenty - two of fine green marble . Only three of these remain erect , and are little more than 40 feet high . Up to a height of about 12 feet from their pedestals their surface is smooth and unin- jured , but above this ...
... granite , and twenty - two of fine green marble . Only three of these remain erect , and are little more than 40 feet high . Up to a height of about 12 feet from their pedestals their surface is smooth and unin- jured , but above this ...
Page 91
... Granite affords an instance of this , for the felspar which it contains consists of the combined silicates of alumina , potash , and soda . Rain - water falling upon granite decomposes the felspar , removing the silicates of potash and ...
... Granite affords an instance of this , for the felspar which it contains consists of the combined silicates of alumina , potash , and soda . Rain - water falling upon granite decomposes the felspar , removing the silicates of potash and ...
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Common terms and phrases
acid action agencies altered alumina amount anticlinal augite basalt beds blocks bottom calcareous calcite called carbonate of lime carbonic acid chalk channel chemical clay cleavage cliffs coast colour consists coral cracks crystalline crystals currents débris denudation deposits depth described detrition distance district dolerite dykes earth earth's crust Edited elevation erosion eruptions fault feet felspar fissures formation formed fragments Geol Geology glacier glauconite gneiss gradually granite greensand ground hills horizontal hornblende igneous rocks iron island Jukes lakes land lava layers limestone magnesia mass material metamorphic mica miles mineral mountain occur original Orthoclase outcrop oxide particles pebbles planes porphyritic portion pressure produced quartz rain reefs ridge rise river sand sandstone schist shale shells shore side siliceous slope soil solution sometimes stones strata stratified rocks stream structure surface thickness tion tract Translated unconformity valley vertical volcanic