Ice-work, Present and PastK. Paul, Trench, Trübner & Company, Limited, 1903 - 295 pagini |
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Pagina 73
... clay . The ice at the bottom of the glacier , owing to the washing out of gravel from beneath , forms a small line of bluffs in the face of the boulder - covered escarpment , at a height of about ten feet above high tide . This is one ...
... clay . The ice at the bottom of the glacier , owing to the washing out of gravel from beneath , forms a small line of bluffs in the face of the boulder - covered escarpment , at a height of about ten feet above high tide . This is one ...
Pagina 110
... boulder clay of that region , upon which they sometimes rest , but oftener perhaps on solid rock . They rise abruptly to a N.W. FIG . 11. Section of Kame near Dover , New Hampshire . Length , 300 feet ; height , 40 feet ; base , about ...
... boulder clay of that region , upon which they sometimes rest , but oftener perhaps on solid rock . They rise abruptly to a N.W. FIG . 11. Section of Kame near Dover , New Hampshire . Length , 300 feet ; height , 40 feet ; base , about ...
Pagina 119
... boulder clay . This con- tains numerous pieces of rock , ranging in form from rounded to angular , but as a rule more or less sub- angular , embedded in clay , sometimes loamy or sandy , but generally stiff and tenacious . Those of ...
... boulder clay . This con- tains numerous pieces of rock , ranging in form from rounded to angular , but as a rule more or less sub- angular , embedded in clay , sometimes loamy or sandy , but generally stiff and tenacious . Those of ...
Pagina 121
... clay varies in colour and character in different parts of the country ; it usually bears some resemblance to the ... Boulder Clay , separated by the so - called Middle Glacial Sands and Gravels . But in the interior and on the higher ...
... clay varies in colour and character in different parts of the country ; it usually bears some resemblance to the ... Boulder Clay , separated by the so - called Middle Glacial Sands and Gravels . But in the interior and on the higher ...
Pagina 122
... Boulder Clay can be recognised are rather limited in extent and marginal in position , and this deposit is said not to occur at heights greater than 500 feet above sea - level , while the Sands and Gravels , with the Upper Boulder Clay ...
... Boulder Clay can be recognised are rather limited in extent and marginal in position , and this deposit is said not to occur at heights greater than 500 feet above sea - level , while the Sands and Gravels , with the Upper Boulder Clay ...
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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.