Class-book of GeologyMacmillan and Company, 1890 - 516 σελίδες |
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Σελίδα xvi
... rising through the bedded tuff of a crater 44. Group of quartz - crystals ( Rock - crystal ) 106 • 107 109 118 45. Calcite ( Iceland spar ) , showing its characteristic rhombohedral cleavage 124 46. Cube , octahedron , dodecahedron 125 ...
... rising through the bedded tuff of a crater 44. Group of quartz - crystals ( Rock - crystal ) 106 • 107 109 118 45. Calcite ( Iceland spar ) , showing its characteristic rhombohedral cleavage 124 46. Cube , octahedron , dodecahedron 125 ...
Σελίδα 1
... rise along the sky - line as they did long centuries ago , catching as of old the fresh rains of heaven and gathering them into the brooks and rivers which , through unknown ages , have never ceased to flow seawards . So stead- fast do ...
... rise along the sky - line as they did long centuries ago , catching as of old the fresh rains of heaven and gathering them into the brooks and rivers which , through unknown ages , have never ceased to flow seawards . So stead- fast do ...
Σελίδα 17
... rise to sandy clay or loam . Hence , knowing what the underlying rock is , we may usually infer what must be the character of the overlying soil , or , from the nature of the soil , we may form an opinion respecting the quality of the ...
... rise to sandy clay or loam . Hence , knowing what the underlying rock is , we may usually infer what must be the character of the overlying soil , or , from the nature of the soil , we may form an opinion respecting the quality of the ...
Σελίδα 19
... rise high into the air , there gather at their feet and down their clefts long trails or screes of loose blocks that have been split off from them by the weather . Such slopes , especially where they are not too steep , and where the ...
... rise high into the air , there gather at their feet and down their clefts long trails or screes of loose blocks that have been split off from them by the weather . Such slopes , especially where they are not too steep , and where the ...
Σελίδα 21
... rise in barren ridges more than 100 feet above the site of the buried land . In the interior of continents also , where with great dryness of climate there is a continual disintegration of the surface of rocks , wide wastes of sand ...
... rise in barren ridges more than 100 feet above the site of the buried land . In the interior of continents also , where with great dryness of climate there is a continual disintegration of the surface of rocks , wide wastes of sand ...
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Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
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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