Ice-work, Present and PastK. Paul, Trench, Trübner & Company, Limited, 1903 - 295 pagini |
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Pagina 18
... reach an elevation of fully 3000 feet above the lowland , and from that their upper limit descends in either direc- tion.2 On the limestone slopes of the Jura above 1 The rock is a variety of euphotide , chiefly consisting of a ...
... reach an elevation of fully 3000 feet above the lowland , and from that their upper limit descends in either direc- tion.2 On the limestone slopes of the Jura above 1 The rock is a variety of euphotide , chiefly consisting of a ...
Pagina 22
... reach the ice , but in the case of the larger glaciers a comparatively level space generally lies at its foot , the breadth of course being dependent on that of the valley which it occupies . This 22 ICE - WORK , PRESENT AND PAST.
... reach the ice , but in the case of the larger glaciers a comparatively level space generally lies at its foot , the breadth of course being dependent on that of the valley which it occupies . This 22 ICE - WORK , PRESENT AND PAST.
Pagina 51
... reach the portals of the valley.1 Its general features have been ascertained by Lieu- tenant Peary's adventurous journey across the northern end of Greenland . After wintering in latitude 77 ° 43 ′ N. , he travelled across it from M ...
... reach the portals of the valley.1 Its general features have been ascertained by Lieu- tenant Peary's adventurous journey across the northern end of Greenland . After wintering in latitude 77 ° 43 ′ N. , he travelled across it from M ...
Pagina 74
... reach Malaspina Glacier , they " " invariably flow The entrances into tunnels and disappear from view . into the tunnels are frequently high arches , and the streams flowing into them carry along great quantities of gravel and sand ...
... reach Malaspina Glacier , they " " invariably flow The entrances into tunnels and disappear from view . into the tunnels are frequently high arches , and the streams flowing into them carry along great quantities of gravel and sand ...
Pagina 110
... reach as much as 180 feet , while now and again they sink down to 30 or 20 feet , or even disappear altogether below newer deposits . Their sides have an inclination of from 15 ° to 20 ° , but occasionally as much as 25 ° or even 30 ...
... reach as much as 180 feet , while now and again they sink down to 30 or 20 feet , or even disappear altogether below newer deposits . Their sides have an inclination of from 15 ° to 20 ° , but occasionally as much as 25 ° or even 30 ...
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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
Pasaje populare
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.