Ice-works, Present and PastK. Paul, Trench, Trübner & Company, Limited, 1896 - 295 pagini |
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Pagina ix
... less direct connection with an ice age . For instance , nothing is said of the coarse gravels on some upland plateaux and in certain river valleys , though many of them almost undoubtedly were formed when the climate was distinctly ...
... less direct connection with an ice age . For instance , nothing is said of the coarse gravels on some upland plateaux and in certain river valleys , though many of them almost undoubtedly were formed when the climate was distinctly ...
Pagina x
Thomas George Bonney. less obvious and the Glacial Epoch did not begin with a particular year , I have dealt only with those deposits to which it can lay an undisputed claim . For the same reason nothing has been said either as to the ...
Thomas George Bonney. less obvious and the Glacial Epoch did not begin with a particular year , I have dealt only with those deposits to which it can lay an undisputed claim . For the same reason nothing has been said either as to the ...
Pagina 6
... less rapidly than the exposed surface of the glacier . Sometimes they travel to the end of the ice - stream ; but if small , they are more often engulfed in a crevasse , where we leave them for the present . When the bed of a valley has ...
... less rapidly than the exposed surface of the glacier . Sometimes they travel to the end of the ice - stream ; but if small , they are more often engulfed in a crevasse , where we leave them for the present . When the bed of a valley has ...
Pagina 7
... less a crescent in plan , the convexity pointing downward , in corre- spondence with the shape of the ice - stream ; and if 1 The possibility of this supposition will be discussed in a later chapter . its end remain for long at the same ...
... less a crescent in plan , the convexity pointing downward , in corre- spondence with the shape of the ice - stream ; and if 1 The possibility of this supposition will be discussed in a later chapter . its end remain for long at the same ...
Pagina 8
... less definite than the terminal moraine ; sometimes their materials also may be scattered , owing to a steady shrinkage of the glacier on the sloping sides of the valley . The volume of the moraine is dependent on a variety of circum ...
... less definite than the terminal moraine ; sometimes their materials also may be scattered , owing to a steady shrinkage of the glacier on the sloping sides of the valley . The volume of the moraine is dependent on a variety of circum ...
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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