A Handy-Book of Rock Names, with Brief Descriptions of the RocksRobert Hardwicke, 1873 - 139 páginas |
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Página 3
... associated with granite are more or less metamorphosed : some- times the metamorphism is very slight indeed . This may be due to the granite having been formed at a lower zone or depth , and intruded into its present place in a semi ...
... associated with granite are more or less metamorphosed : some- times the metamorphism is very slight indeed . This may be due to the granite having been formed at a lower zone or depth , and intruded into its present place in a semi ...
Página 5
... associated with beds of tuff . Tuff also on some occasions occurs in dykes and pipes , when , appa- rently , it is the remains of old vents or funnels of eruption . The VOLCANIC rocks appear capable of a division similar to the Plutonic ...
... associated with beds of tuff . Tuff also on some occasions occurs in dykes and pipes , when , appa- rently , it is the remains of old vents or funnels of eruption . The VOLCANIC rocks appear capable of a division similar to the Plutonic ...
Página 26
... associated rocks similar to those which now exist . Typical granites weather with a peculiar rough , rugged aspect . * In Cornwall granite formerly was called growan , from gronen , a grain . + Some of the granites that weather or ...
... associated rocks similar to those which now exist . Typical granites weather with a peculiar rough , rugged aspect . * In Cornwall granite formerly was called growan , from gronen , a grain . + Some of the granites that weather or ...
Página 29
... associated * If granityte , as suggested , fills cracks and fissures in the granite , it and elvanyte must necessarily have cooled under somewhat similar conditions . Jukes has described some of the granitytes of the counties of Wicklow ...
... associated * If granityte , as suggested , fills cracks and fissures in the granite , it and elvanyte must necessarily have cooled under somewhat similar conditions . Jukes has described some of the granitytes of the counties of Wicklow ...
Página 30
... associated with the intrusive granite , and merges into it . Sometimes , indeed , there is felspar developed , but so sparingly and at such wide intervals , that it seems to be more an accessory than an essential of the rock . In some ...
... associated with the intrusive granite , and merges into it . Sometimes , indeed , there is felspar developed , but so sparingly and at such wide intervals , that it seems to be more an accessory than an essential of the rock . In some ...
Otras ediciones - Ver todas
A Handy-Book of Rock Names, with Brief Descriptions of the Rocks George Henry Kinahan Vista completa - 1873 |
A Handy-book of Rock Names, with Brief Descriptions of the Rocks George Henry Kinahan Vista completa - 1873 |
A Handy Book of Rock Names: With Brief Descriptions of the Rocks (1873) G. Henry Kinahan Sin vista previa disponible - 2008 |
Términos y frases comunes
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
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