A Handy-book of Rock Names, with Brief Descriptions of the Rocks |
From inside the book
Results 1-5 of 59
Page 3
... 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 - liquid state , under such low ...
... 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 - liquid state , under such low ...
Page 27
... less in thickness , to about two or three yards in width . These latter appear to have segre- gated from the deep - seated fluid or semi - fluid por- tions of the mass , and to have been forced up into C the vacancies or the shrinkage ...
... less in thickness , to about two or three yards in width . These latter appear to have segre- gated from the deep - seated fluid or semi - fluid por- tions of the mass , and to have been forced up into C the vacancies or the shrinkage ...
Page 28
... less basic , containing from thirty to forty - five per cent . of silica . As they flow out they are seen to be very fluid , and to run quickly , but they solidify much more rapidly than iron slag . Yet these basic slags fuse at 1,300 ...
... less basic , containing from thirty to forty - five per cent . of silica . As they flow out they are seen to be very fluid , and to run quickly , but they solidify much more rapidly than iron slag . Yet these basic slags fuse at 1,300 ...
Page 31
... less dark - coloured mica , also pyrite or 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 ...
... less dark - coloured mica , also pyrite or 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 ...
Page 32
... 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 7 ) . These rocks appear to have been formed from previously existing ...
... 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 7 ) . These rocks appear to have been formed from previously existing ...
Other editions - View all
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 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