The Student's Handbook of Physical GeologyG. Bell, 1892 - 666 pages |
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Page 4
... occur in a fossil state , is even more necessary for a geologist than a knowledge of inorganic substances . The cause of this necessity may be briefly stated as follows . When portions of the earth's crust came to be examined , it was ...
... occur in a fossil state , is even more necessary for a geologist than a knowledge of inorganic substances . The cause of this necessity may be briefly stated as follows . When portions of the earth's crust came to be examined , it was ...
Page 11
... occur here and there all over the earth , and from which streams of lava or molten rock are so often poured forth , prove that some parts of the interior at any rate are so heated that solid rocks are rendered perfectly fluid . But the ...
... occur here and there all over the earth , and from which streams of lava or molten rock are so often poured forth , prove that some parts of the interior at any rate are so heated that solid rocks are rendered perfectly fluid . But the ...
Page 13
... occur in localities which are far removed from any recent or recently extinct volcanoes . In our own country the waters of Bath , with a temperature of 120 ° F. , and those of Buxton , with a temperature of 82 ° , are instances . There ...
... occur in localities which are far removed from any recent or recently extinct volcanoes . In our own country the waters of Bath , with a temperature of 120 ° F. , and those of Buxton , with a temperature of 82 ° , are instances . There ...
Page 21
... occur by hundreds . in every volcanic cone traversing the previously formed layers of ash and lava , and sending out smaller veins in all directions . Fig . 2 is of course merely a diagram , and the internal structure of a volcano is in ...
... occur by hundreds . in every volcanic cone traversing the previously formed layers of ash and lava , and sending out smaller veins in all directions . Fig . 2 is of course merely a diagram , and the internal structure of a volcano is in ...
Page 22
... occur in the following order : - 1. An explosive discharge of steam , falling in rain . 2. A discharge of dust , ashes , and stones . 3. The ejection of larger blocks with heavier explosions : at the same time the red glow of the lava ...
... occur in the following order : - 1. An explosive discharge of steam , falling in rain . 2. A discharge of dust , ashes , and stones . 3. The ejection of larger blocks with heavier explosions : at the same time the red glow of the lava ...
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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