A Handy-book of Rock Names, with Brief Descriptions of the RocksRobert Hardwicke, 1873 - 139 páginas |
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Página 26
... marcasite . + Some granites are undoubtedly intrusive , while others appear to be only in part intrusive , portions having been formed in situ ; that is , having relations as to position with the associated rocks similar to those which ...
... marcasite . + Some granites are undoubtedly intrusive , while others appear to be only in part intrusive , portions having been formed in situ ; that is , having relations as to position with the associated rocks similar to those which ...
Página 27
... marcasite are often constituents ; while Haughton seems to believe that most , if not all , intrusive granites also contain albite . NOTE . Haughton finds the intrusive granites of Cornwall , Devon , Leinster , and Ulster , to contain ...
... marcasite are often constituents ; while Haughton seems to believe that most , if not all , intrusive granites also contain albite . NOTE . Haughton finds the intrusive granites of Cornwall , Devon , Leinster , and Ulster , to contain ...
Página 29
... marca- site , are locally present . Granityte occurs as veins in granite from mere lines to two or more yards in thickness . It seems to be allied to elvanyte or quartz - porphyry , hereafter described , as sometimes part of the quartz ...
... marca- site , are locally present . Granityte occurs as veins in granite from mere lines to two or more yards in thickness . It seems to be allied to elvanyte or quartz - porphyry , hereafter described , as sometimes part of the quartz ...
Página 31
... marcasite , and locally tourmaline . Pegmatyte sometimes appears in large , well- marked veins , but more frequently it occurs in irregular veins , patches , and lentils , dying out in every direction . The dark - coloured mica ...
... marcasite , and locally tourmaline . Pegmatyte sometimes appears in large , well- marked veins , but more frequently it occurs in irregular veins , patches , and lentils , dying out in every direction . The dark - coloured mica ...
Página 32
... marcasite , & c . , forming different varieties . NOTE . - Haughton is of opinion that the normal constituents of this class of metamorphic granite in Ireland , Scotland , Norway , Sweden , and Finland , are Quartz , Orthoclase ...
... marcasite , & c . , forming different varieties . NOTE . - Haughton is of opinion that the normal constituents of this class of metamorphic granite in Ireland , Scotland , Norway , Sweden , and Finland , are Quartz , Orthoclase ...
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 of quartz amphibole Amygdaloidal appear Arenaceous Argillous Augyte basic beds Bituminous Breccia Calcareous called Carbonaceous Chloritic classed clay coal colour compact Concretionary conglomerate Conglomeritic constituents containing Cotta crystalline crystals Cupriferous deposited Derivate rocks Diabase Dioryte Dolomitic drift dykes earth elvanyte Euryte felsitic felspar felspathic felstone Ferruginous Fibrous fissile foliation formed gneiss Gneissoid gneissyte granite granitoid granityte granular grit Group Hematitic Hornblendic igneous rocks ingenite rocks intrusive granite Ireland Jukes labradorite lamination latter layers less Lignyte limestone marcasite marl mass matrix metamorphic metamorphosed mica Micaceous minerals Nodular occur oligoclase oligoclase granite Ophyte orthoclase passage-rock Plutonic rocks Porphyritic Protogene pyrite pyroxene quartz Quartzose quartzyte reddish Ribaned ripidolite sand sandstone schist schistose sedimentary rocks shale siliceous slate slaty sometimes Spheroidal Steatyte Structural Varieties Subgroup Subvar Subvarieties surface Syenyte talc Talcose texture Trachyte tuff Tuffose turf usually Varieties in Composition veins of segregation Vesicular Volcanic weather Whinstone