Ice-work, Present and PastK. Paul, Trench, Trübner & Company, Limited, 1903 - 295 pagini |
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Pagina 10
... district of Derbyshire or among the granite hills of Auvergne . Instead of rough angular ridges , jutting knobs and rude hollows , we find rounded , smoothed , in places even polished surfaces . The last task , however , has been ill ...
... district of Derbyshire or among the granite hills of Auvergne . Instead of rough angular ridges , jutting knobs and rude hollows , we find rounded , smoothed , in places even polished surfaces . The last task , however , has been ill ...
Pagina 17
... districts the rocks disintegrate more easily , the valleys are wider , their floor is buried beneath gravel and alluvium , their sloping sides are covered by débris which has been swept down from the upper crags by avalanches or streams ...
... districts the rocks disintegrate more easily , the valleys are wider , their floor is buried beneath gravel and alluvium , their sloping sides are covered by débris which has been swept down from the upper crags by avalanches or streams ...
Pagina 40
... district is sculptured , the more easily , cæteris paribus , glaciers seem to form . A fairly level island will be merely snowcapped ; its shores in summer time may be un- covered and support a scanty vegetation ; but in one that rises ...
... district is sculptured , the more easily , cæteris paribus , glaciers seem to form . A fairly level island will be merely snowcapped ; its shores in summer time may be un- covered and support a scanty vegetation ; but in one that rises ...
Pagina 44
... district . Here then the great central reservoir of ice is tapped by a definite drainage channel . This is the birthplace of one of the great glaciers . The ice no longer presents a smooth unbroken surface ; crevasses become more ...
... district . Here then the great central reservoir of ice is tapped by a definite drainage channel . This is the birthplace of one of the great glaciers . The ice no longer presents a smooth unbroken surface ; crevasses become more ...
Pagina 48
... district near Disco Bay which had been recently abandoned by the land - ice as curiously like the woodless gneiss districts in Sweden and Finland . " Everywhere occur rounded , but seldom scratched , hills of gneiss with erratic blocks ...
... district near Disco Bay which had been recently abandoned by the land - ice as curiously like the woodless gneiss districts in Sweden and Finland . " Everywhere occur rounded , but seldom scratched , hills of gneiss with erratic blocks ...
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Termeni și expresii frecvente
Alpine Alps amount angular basin beneath boulder clay breccias Britain Carboniferous chalk chap cliffs climate coast comparatively considerable crags débris descend direction distance district Drift Edition 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 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 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
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Pagina 59 - It was a beautifully clear evening, and we had a most enchanting view of the two magnificent ranges of mountains, whose lofty peaks, perfectly covered with eternal snow, rose to elevations varying from seven to ten thousand feet above the level of the ocean. The glaciers that filled their intervening valleys, and which descended from near the mountain summits, projected in many places several miles into the nea, and terminated in lofty perpendicular cliffs.