A Handy-Book of Rock Names, with Brief Descriptions of the Rocks |
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Page 29
... present , but often in such minute flakes as to be only microsco- pically visible . Pyrite , and sometimes marca- site , are locally present . Granityte occurs as veins in granite from mere lines to two or more yards in thickness . It ...
... present , but often in such minute flakes as to be only microsco- pically visible . Pyrite , and sometimes marca- site , are locally present . Granityte occurs as veins in granite from mere lines to two or more yards in thickness . It ...
Page 32
... present positions as regards the associated rocks ( see note , page 7 ) . These rocks appear to have been formed from previously existing sedimentary and igneous rocks . Those due to the metamorphism of the sedimentary and of the basic ...
... present positions as regards the associated rocks ( see note , page 7 ) . These rocks appear to have been formed from previously existing sedimentary and igneous rocks . Those due to the metamorphism of the sedimentary and of the basic ...
Page 33
... present with , or in place of , the amphibole , making vari- eties . The last - named mineral is supposed to be due to secondary formation . NOTE . - Hornblendic granite by some geologists has been called " Syenitic granite . " This ...
... present with , or in place of , the amphibole , making vari- eties . The last - named mineral is supposed to be due to secondary formation . NOTE . - Hornblendic granite by some geologists has been called " Syenitic granite . " This ...
Page 43
... present surface of the earth . The Plutonic rocks were irrupted or in- truded , and consolidated at or near a former surface of the earth , or at the bottom of a sea or lake , under , comparatively speaking , little pressure ; but ...
... present surface of the earth . The Plutonic rocks were irrupted or in- truded , and consolidated at or near a former surface of the earth , or at the bottom of a sea or lake , under , comparatively speaking , little pressure ; but ...
Page 44
... present surface of the earth , while the former were formed in ages or geological periods long past , and subsequently were covered up by accumulations of strata that are now in part removed by the force of denudation , thereby bring ...
... present surface of the earth , while the former were formed in ages or geological periods long past , and subsequently were covered up by accumulations of strata that are now in part removed by the force of denudation , thereby bring ...
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A Handy Book of Rock Names: With Brief Descriptions of the Rocks (1873) G. Henry Kinahan No preview available - 2008 |
Common terms and phrases
aggregate amphibole Arenaceous Argillous Argillyte Augyte beds bituminous Breccia Calcareous Carbonaceous Chloritic Class clay cloth coal colour compact Concretionary Conglomeritic contains Cotta Crown 8vo crystalline crystals deposited Derivate rocks Dioryte Dolomyte drift dykes elvanyte Euryte F.R.S. Illustrated Fcap felsitic felspar felspathic Ferruginous fissile foliation formed geological gneiss Gneissoid Gneissyte granite granitoid granular Grass grit Group Hematitic highly siliceous Hornblendic igneous rocks ingenite rocks Ireland Jukes labradorite Lankester less Lignyte limestone marcasite marl mass matrix metamorphic metamorphosed mica mica-schist Micaceous Microscopic minerals Nodular occur oligoclase oligoclase granite Ophyte orthoclase plates Plutonic rocks Popular Science Review Porphyritic Prof pyrite pyroxene quartz Quartzose R. A. Proctor Ribaned ripidolite ROCK NAMES sand sandstone schist schistose Sedges sedimentary rocks Shale siliceous slate slaty Sowerby's English Botany spheroidal Steatyte Structural Varieties Subgroup Subvar subvarieties Syenyte Trachyte Tufa tuff Tuffose Turf usually Varieties in Composition veins Vesicular Volcanic Whinstone
Popular passages
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