Class-book of GeologyMacmillan and Company, 1886 - 516 páginas |
Dentro del libro
Resultados 6-10 de 91
Página 9
... records we might conjecture what may have been the general character of the life of the time . By searching the similar records of earlier ages the geologist has brought to light many profoundly interesting vestiges of vegetation and of ...
... records we might conjecture what may have been the general character of the life of the time . By searching the similar records of earlier ages the geologist has brought to light many profoundly interesting vestiges of vegetation and of ...
Página 10
... records out of which the historian writes the chronicles of a nation . We might vary the simile by liken- ing them to the materials employed in the construction of a great building . It is of course interesting enough to know what kinds ...
... records out of which the historian writes the chronicles of a nation . We might vary the simile by liken- ing them to the materials employed in the construction of a great building . It is of course interesting enough to know what kinds ...
Página 14
... records " in the dark backward and abysm of time , " we should first make ourselves familiar with the manner in which these records are being written from day to day before our eyes . In this first Part , attention will accordingly be ...
... records " in the dark backward and abysm of time , " we should first make ourselves familiar with the manner in which these records are being written from day to day before our eyes . In this first Part , attention will accordingly be ...
Página 15
Archibald Geikie. embrace all the geological records , ancient as well as modern , in one general scheme of classification . Such a scheme will enable us to see the continuity of the materials of geological history , and will fix ...
Archibald Geikie. embrace all the geological records , ancient as well as modern , in one general scheme of classification . Such a scheme will enable us to see the continuity of the materials of geological history , and will fix ...
Página 32
... records which river - action leaves behind it . Chemical Action of Running Water . - We have seen that rain in its descent from the clouds absorbs air , and that with the oxygen and carbonic acid which it thus obtains it proceeds to ...
... records which river - action leaves behind it . Chemical Action of Running Water . - We have seen that rain in its descent from the clouds absorbs air , and that with the oxygen and carbonic acid which it thus obtains it proceeds to ...
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Términos y frases comunes
abundant accumulated acid augite basin beds bones bottom Brachiopods calcareous calcite carbonate of lime Carboniferous chapter characteristic chiefly clay containing corals Cretaceous crinoids crystalline crystals cycads decay deposits detritus Devonian earth earth's crust Eocene Europe evidence example extinct fauna feet thick fishes fissures fossils genera geological history geologist glacier globe gradually granite gravel ground gypsum iron Jurassic kinds known lakes land lava layers limestone living lower marine marls masses materials Mesozoic miles mineral matter Miocene molten mountains natural North occur Old Red Sandstone organic remains original Palæozoic period Permian plants and animals Pliocene present preserved probably quartz rain records regions rivers salt sand schists sea-floor Section sediment sedimentary rocks shales sheets shells siliceous Silurian slopes soil solid sometimes species stone strata stratified stream structure substance surface terrestrial Tertiary tion trace Triassic upper valley various vegetation vent volcanic