Ice-works, Present and PastK. Paul, Trench, Trübner & Company, Limited, 1896 - 295 pagini |
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Pagina 9
... yards in volume may be seen , as we have said , travelling down the glacier ; as it retreats , such blocks are occasionally stranded , either on the sloping flanks of the valley , or on some prominent hummock of rock which previously ...
... yards in volume may be seen , as we have said , travelling down the glacier ; as it retreats , such blocks are occasionally stranded , either on the sloping flanks of the valley , or on some prominent hummock of rock which previously ...
Pagina 14
... yards , in depth . During the retreat of the ice these hollows , called " giants ' kettles , " often become filled up with mud and stones . Such , then , are the effects of a glacier : namely , perched blocks and moraines , terminal ...
... yards , in depth . During the retreat of the ice these hollows , called " giants ' kettles , " often become filled up with mud and stones . Such , then , are the effects of a glacier : namely , perched blocks and moraines , terminal ...
Pagina 18
... yards wide ; occasionally three or four may be seen practically in contact . Numbers have been broken up for building , road - metalling , and wayside posts . The volume of the largest is estimated at 60,480 cubic feet , and on its flat ...
... yards wide ; occasionally three or four may be seen practically in contact . Numbers have been broken up for building , road - metalling , and wayside posts . The volume of the largest is estimated at 60,480 cubic feet , and on its flat ...
Pagina 19
... yards in volume , are confusedly piled together ; the latter , however , are comparatively rare , though occa- sionally a monster , like those already mentioned , may be found ; as , for instance , the great block of impure serpentine ...
... yards in volume , are confusedly piled together ; the latter , however , are comparatively rare , though occa- sionally a monster , like those already mentioned , may be found ; as , for instance , the great block of impure serpentine ...
Pagina 23
... yards of rock or débris has been exposed , which previously had been concealed beneath the ice , and the thickness of the glacier has been diminished in places from 150 to more than 300 feet . Where the ice has rested on 1 To these a ...
... yards of rock or débris has been exposed , which previously had been concealed beneath the ice , and the thickness of the glacier has been diminished in places from 150 to more than 300 feet . Where the ice has rested on 1 To these a ...
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Termeni și expresii frecvente
Alpine Alps amount angular basin beneath boulder clay breccias Carboniferous chalk chap cliffs climate coast comparatively considerable crags débris descend direction distance district Drift elevation England Eocene erratics feet above sea-level fragments Geol geologists Geology Geology of England glacial deposits Glacial Epoch glaciers Glen Roy granite Greenland ground height higher hills hypothesis Ice Age ice-sheet ice-streams Illustrations inches indicate inland ice Irish Sea islands Jour lakes land land-ice latitude latter less lower lowlands Malaspina Glacier marine mass material melting miles Moel Tryfaen molluscs moraine mountain nearly neighbourhood névé northern Norway numerous Nunataks occasionally occur peaks pebbles places precipitation present probably Professor Quart range region ridges rise river roches moutonnées sands and gravels Scotland shells side slope snow snow-line sometimes southern stones stratified streams striated subangular submergence surface temperature terminal moraine thickness tion traced upper valley Wales western yards