The Student's Handbook of Physical GeologyG. Bell and Sons, 1884 - 514 pages |
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Page x
... clay . 3. Deposits formed in lakes : -Mechanically formed ; chemically formed ; deposits formed by organic agency . CHAPTER XI . - MARINE DEPOSITS . Mechanically formed . Assortment of material . Littoral deposits . Gain of land on the ...
... clay . 3. Deposits formed in lakes : -Mechanically formed ; chemically formed ; deposits formed by organic agency . CHAPTER XI . - MARINE DEPOSITS . Mechanically formed . Assortment of material . Littoral deposits . Gain of land on the ...
Page 59
... clay , and brought to light two perfect heads of the extinct elephant known as the mammoth . 2. A submerged forest of large extent exists off the north coast of Norfolk from Hunstanton to Brancaster Bay . The portion exposed at low ...
... clay , and brought to light two perfect heads of the extinct elephant known as the mammoth . 2. A submerged forest of large extent exists off the north coast of Norfolk from Hunstanton to Brancaster Bay . The portion exposed at low ...
Page 60
... clays of the marshland.1 3. Testimony of Buried Valleys . - That rivers make their own valleys will be proved in a subsequent chapter , but accepting the statement for the present , it is evident that so long as the country remains ...
... clays of the marshland.1 3. Testimony of Buried Valleys . - That rivers make their own valleys will be proved in a subsequent chapter , but accepting the statement for the present , it is evident that so long as the country remains ...
Page 72
... clay or kaolin ( silicate of alumina ) and partly as sand ( particles of quartz ) . The large deposits of kaolin ( or china clay ) in Cornwall illustrate the enormous destruction of granite which has there taken place . The extent of ...
... clay or kaolin ( silicate of alumina ) and partly as sand ( particles of quartz ) . The large deposits of kaolin ( or china clay ) in Cornwall illustrate the enormous destruction of granite which has there taken place . The extent of ...
Page 74
... clay , varying in height from 20 to 100 feet , and usually capped by a single stone or boulder . The history of their formation is as follows . The whole valley was once filled with the hard mud or boulder clay , which is of a ...
... clay , varying in height from 20 to 100 feet , and usually capped by a single stone or boulder . The history of their formation is as follows . The whole valley was once filled with the hard mud or boulder clay , which is of a ...
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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