The Student's Handbook of Physical GeologyG. Bell and Sons, 1884 - 514 pages |
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Page vii
... result , —a sort of corollary to dynamical geology . " This volume includes only the three branches of the subject mentioned above , those of Palæontological and Historical Geology being left to form another volume . Most of the ...
... result , —a sort of corollary to dynamical geology . " This volume includes only the three branches of the subject mentioned above , those of Palæontological and Historical Geology being left to form another volume . Most of the ...
Page 5
... results . produced by the geological agencies now in operation . 2. Geognosy , or Structural Geology . - Being the study of rocks and rock masses , without reference to the geological time of their production . This branch may be ...
... results . produced by the geological agencies now in operation . 2. Geognosy , or Structural Geology . - Being the study of rocks and rock masses , without reference to the geological time of their production . This branch may be ...
Page 10
... result . Hence we may conclude that the position of the earth's axis has remained unchanged throughout all geological time , and that the present north and south poles have always been its poles . The second conclusion deducible from ...
... result . Hence we may conclude that the position of the earth's axis has remained unchanged throughout all geological time , and that the present north and south poles have always been its poles . The second conclusion deducible from ...
Page 12
... result of his experiments in two hundred of these mines showed that the average temperature at different depths was ... results obtained : - At a depth of 564 feet , a temperature of 66 ° F. 1,674 99 " " 78 ° F. At a depth of 2,013 feet ...
... result of his experiments in two hundred of these mines showed that the average temperature at different depths was ... results obtained : - At a depth of 564 feet , a temperature of 66 ° F. 1,674 99 " " 78 ° F. At a depth of 2,013 feet ...
Page 13
... results : - At 330 feet a temperature of 99 660 99 99 " 9 1,000 " " " " 99 2,200 99 " " 591 ° F. 62 ° F. 651 ° F. 76 ° F. These figures yield a slower rate of increase , viz . , only 1 ° F. for every 82 feet . At Sperenberg , near ...
... results : - At 330 feet a temperature of 99 660 99 99 " 9 1,000 " " " " 99 2,200 99 " " 591 ° F. 62 ° F. 651 ° F. 76 ° F. These figures yield a slower rate of increase , viz . , only 1 ° F. for every 82 feet . At Sperenberg , near ...
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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