Class-book of GeologyMacmillan and Company, 1890 - 516 páginas |
Dentro del libro
Página xvi
... Ground - plan of the structure of the Neck shown in Fig . 40 42. Section through the same Neck as in Figs . 40 and 41 43. Volcanic dykes rising through the bedded tuff of a crater 44. Group of quartz - crystals ( Rock - crystal ) 106 ...
... Ground - plan of the structure of the Neck shown in Fig . 40 42. Section through the same Neck as in Figs . 40 and 41 43. Volcanic dykes rising through the bedded tuff of a crater 44. Group of quartz - crystals ( Rock - crystal ) 106 ...
Página xviii
... Ground - plan of Granite - boss with ring of Contact - Metamorphism 203 107. Intrusive Sheet • • 108. Interstratified or contemporaneous Sheets 204 205 109. Section to illustrate evidence of contemporaneous volcanic action 110. Map of ...
... Ground - plan of Granite - boss with ring of Contact - Metamorphism 203 107. Intrusive Sheet • • 108. Interstratified or contemporaneous Sheets 204 205 109. Section to illustrate evidence of contemporaneous volcanic action 110. Map of ...
Página 1
... ground by the farmer . A flooded river will in a few hours cut away large slices from its banks , and spreading over fields and meadows , will bury many acres of fertile land under a covering of barren sand and shingle . A long ...
... ground by the farmer . A flooded river will in a few hours cut away large slices from its banks , and spreading over fields and meadows , will bury many acres of fertile land under a covering of barren sand and shingle . A long ...
Página 2
... ground is often convulsed by earth- quakes , many of which leave permanent scars upon the surface of the land . Volcanoes , too , in many countries pour forth streams of molten rock and showers of dust and cinders that bury the ...
... ground is often convulsed by earth- quakes , many of which leave permanent scars upon the surface of the land . Volcanoes , too , in many countries pour forth streams of molten rock and showers of dust and cinders that bury the ...
Página 4
... ground was then submerged beneath the sea . The present condition of the ground shows that subsequently the sea retired and the locality passed into dry land as it is to - day . It is evident that by this method of examination ...
... ground was then submerged beneath the sea . The present condition of the ground shows that subsequently the sea retired and the locality passed into dry land as it is to - day . It is evident that by this method of examination ...
Otras ediciones - Ver todas
Términos y frases comunes
abundant accumulated acid Ammonites ancient Assistant Master beds BOOK bottom Brachiopods calcareous calcite Cambrian Cambridge carbonate of lime Carboniferous Chapter chiefly clay College containing corals Cretaceous crinoids crystalline crystals decay deposits detritus Devonian earth earth's crust Edited ELEMENTARY Eocene eruptive Europe evidence example extinct fauna Fcap feet fissures fossils genera GEOGRAPHY geological history glacier globe gradually granite gravel GREEK ground Illustrated Jurassic kinds known lakes land lava layers limestone living lower marine marls mass materials Mesozoic mineral Miocene mountains natural occur Old Red Sandstone organic remains original Palæozoic Paleozoic period Permian plants and animals Pliocene present preserved Prof Professor quartz Red Sandstone regions revised rivers rocks sand schists sediment sedimentary sedimentary rocks shales sheets shells siliceous Silurian soil solid sometimes species stone strata structure substance surface terrestrial Tertiary thick trace Triassic upper various vegetation volcanic
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