The Scientific Study of SceneryMethuen & Company, 1900 - 368 страница |
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Страница 12
... strata of rock . It need not necessarily be a plane of discontinuity , but may merely separate two beds of different composition , as mud and limestone , which are nevertheless welded together , but the majority of planes of ...
... strata of rock . It need not necessarily be a plane of discontinuity , but may merely separate two beds of different composition , as mud and limestone , which are nevertheless welded together , but the majority of planes of ...
Страница 13
... strata , which have produced a series of folds . A few words must be devoted to the nomenclature applied to these disturbed strata . The greatest angle which an inclined stratum makes with the horizon is known as the angle of dip of the ...
... strata , which have produced a series of folds . A few words must be devoted to the nomenclature applied to these disturbed strata . The greatest angle which an inclined stratum makes with the horizon is known as the angle of dip of the ...
Страница 14
... strata dip away on either side from an axis the structure may be termed a saddle ( anticline ) , as in A 1 of figure , while when they dip towards an axis , as in A 2 , we have a trough ( syncline ) . When strata are horizontal , then ...
... strata dip away on either side from an axis the structure may be termed a saddle ( anticline ) , as in A 1 of figure , while when they dip towards an axis , as in A 2 , we have a trough ( syncline ) . When strata are horizontal , then ...
Страница 16
... strata , we often find a number of more or less regular planes running at different angles to the stratification - planes , and similar planes are found in igneous rocks . They may be , and in many cases have been , produced in ...
... strata , we often find a number of more or less regular planes running at different angles to the stratification - planes , and similar planes are found in igneous rocks . They may be , and in many cases have been , produced in ...
Страница 17
... strata are horizontal the master - joints tend to be vertical and at right angles to one another . Thus if one set runs north and south the other will run east and west . Very important to us is the relationship which frequently exists ...
... strata are horizontal the master - joints tend to be vertical and at right angles to one another . Thus if one set runs north and south the other will run east and west . Very important to us is the relationship which frequently exists ...
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accordingly accumulation action agents angles BARING GOULD barrier basins cause character cliffs clouds coast colour considerable corrasion crater crevasses Crown 8vo curve delta Demy 8vo denudation deposits desert regions district drainage E. F. BENSON earth's surface effect erosion existence Fcap feet fissure flow folding formation formed fragments frequently Geological give rise glacial glacier gorge Greenland ground H. C. BEECHING height hills horizontal igneous rocks Illustrations islands Lake District lakes land lava limestone lithosphere lower mass material moraines mountain movement nature névé occur ocean original outline owing particles peneplain plain planes of stratification plateau portion produced result ridge river rocks sand scenery screes Second Edition sediment seen side slope snow soft rocks Spitsbergen strata subaerial Tarn tion tract tributary Ullswater uplift upper valley vapour vegetation vertical volcanic volume W. G. Collingwood watershed waves weathering wind