The Student's Handbook of Physical GeologyG. Bell and Sons, 1884 - 514 pages |
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Page xii
... Depth of Oceans compared with the height of Mountains . Evidences of compression . Age of mountain chains . Hypothesis of secular contraction . Hypothesis of columnar expansion . CHAPTER II . - EARTH SCULPTURE , OR THE EVOLUTION OF SUR ...
... Depth of Oceans compared with the height of Mountains . Evidences of compression . Age of mountain chains . Hypothesis of secular contraction . Hypothesis of columnar expansion . CHAPTER II . - EARTH SCULPTURE , OR THE EVOLUTION OF SUR ...
Page 9
... depth of 70,000 feet below the actual surface at the equator . Now the deepest soundings in the ocean are less than ... depths and moun- tain heights , are obviously small . It is also seen that this equatorial bulge of 70,000 feet ...
... depth of 70,000 feet below the actual surface at the equator . Now the deepest soundings in the ocean are less than ... depths and moun- tain heights , are obviously small . It is also seen that this equatorial bulge of 70,000 feet ...
Page 11
... depth of about fifty feet beneath any given place on the earth's surface a thermometer would mark the same tem- perature all the year round . Below this limit of seasonal variation , sometimes called " CHAP . I. ] GENERAL STRUCTURE OF ...
... depth of about fifty feet beneath any given place on the earth's surface a thermometer would mark the same tem- perature all the year round . Below this limit of seasonal variation , sometimes called " CHAP . I. ] GENERAL STRUCTURE OF ...
Page 12
... depths was as follows : - Depth . At 200 feet · Temperature . About 57 ° Fahr . 99 600 99 900 99 99 1,200 99 62 ° Fahr . 99 68 ° Fahr . 99 78 ° Fahr . The average increase below 300 being about 1 ° Fahr . for every 43 feet of descent ...
... depths was as follows : - Depth . At 200 feet · Temperature . About 57 ° Fahr . 99 600 99 900 99 99 1,200 99 62 ° Fahr . 99 68 ° Fahr . 99 78 ° Fahr . The average increase below 300 being about 1 ° Fahr . for every 43 feet of descent ...
Page 13
... depth . While , then , there is some variation in the rate of this increase at different places , it is an undoubted fact that the temperature of the rocks does always increase after passing below the first 50 feet ; and it appears that ...
... depth . While , then , there is some variation in the rate of this increase at different places , it is an undoubted fact that the temperature of the rocks does always increase after passing below the first 50 feet ; and it appears that ...
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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