A handy-book of rock namesHardwrike, 1873 - 139 páginas |
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Página 1
... hard , loose or compact , friable or tenacious , coarse or fine , crystalline or homogeneous ; or they may be scoriaceous , vesicular , hyaline , & c . & c . Rocks may be chemically , mechanically , or organically formed , or two or ...
... hard , loose or compact , friable or tenacious , coarse or fine , crystalline or homogeneous ; or they may be scoriaceous , vesicular , hyaline , & c . & c . Rocks may be chemically , mechanically , or organically formed , or two or ...
Página 32
... hard specimen , but in rock masses it is conspicuous . Granites more or less due to metamorphism , having ( for the most part ) been altered into granite while in their present positions as regards the associated rocks ( see note , page ...
... hard specimen , but in rock masses it is conspicuous . Granites more or less due to metamorphism , having ( for the most part ) been altered into granite while in their present positions as regards the associated rocks ( see note , page ...
Página 44
... hard divisional lines be- tween different kinds of rocks , more especially ingenite rocks ; therefore the Plutonic rocks , on one hand merge into Granitic rocks , and on the other into Volcanic rocks . A boundary between the Granitic ...
... hard divisional lines be- tween different kinds of rocks , more especially ingenite rocks ; therefore the Plutonic rocks , on one hand merge into Granitic rocks , and on the other into Volcanic rocks . A boundary between the Granitic ...
Página 45
... hard matrix and flint - like appearance of the rock ] , Felsyte , or Felsite . The type rock of the Felstones . A compact or granular , hard , siliceous felsitic rock ; a granular mixture of felspar and quartz , in which , although fine ...
... hard matrix and flint - like appearance of the rock ] , Felsyte , or Felsite . The type rock of the Felstones . A compact or granular , hard , siliceous felsitic rock ; a granular mixture of felspar and quartz , in which , although fine ...
Página 52
... rocks are capable of . The first stages of metamorphism of the Whinstones are so various , that it is hard to give a general name for the rocks . Argillyte Gneiss . Felsitic tuff Steatyte . M. GNEISSYTE or 52 HANDY - BOOK OF ROCK NAMES .
... rocks are capable of . The first stages of metamorphism of the Whinstones are so various , that it is hard to give a general name for the rocks . Argillyte Gneiss . Felsitic tuff Steatyte . M. GNEISSYTE or 52 HANDY - BOOK OF ROCK NAMES .
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Términos y frases comunes
action aggregate amphibole appear Arenaceous Argillous aspect associated Author basic beds Black Botany British Brown Calcareous called classed clay cloth coal colour Common compact complete composition constituents contains Cotta Crown 8vo crystalline crystals deposited derivate described developed Dolomitic drift Edition elvanyte felsitic felspar felspathic felstone fissile foliation formed fragments Galway gives gneiss granite granular Grass grit Half hard highly Hornblendic Hospital igneous rocks Illustrated intrusive Ireland iron kinds latter layers less limestone mass matrix metamorphic metamorphosed mica micaceous Microscopic minerals Natural nearly NOTE Observations occur oligoclase Order original orthoclase Plants plates Popular porphyritic portions present Prof pyrite pyroxene quartz rarely ripidolite rocks sand sandstone schist Science Sedges seems shale siliceous similar slate sometimes Species stone structure Subgroup Subvarieties surface tion Titanitic Trachyte tuff usually varieties various veins Volcanic Volume weather
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