The physical geography of New York state . Fi<;. 50. A glacially scratched pebble (photograph by United States Geological Survey). isolated hill, which reached above the ice surface, as themountain peaks of Greenland project above its great gla-cier, forming the nunataks of that region. Nearer Ihemargin ranges of hills separated projecting tongues of theglacier front,— small valley lobes projecting further south-ward along the valleys. The margin was evidently serrated 110 The Physical Geography of Xeiv York State or lobate, and the reason for the position of the marginat any given point wa
The physical geography of New York state . Fi<;. 50. A glacially scratched pebble (photograph by United States Geological Survey). isolated hill, which reached above the ice surface, as themountain peaks of Greenland project above its great gla-cier, forming the nunataks of that region. Nearer Ihemargin ranges of hills separated projecting tongues of theglacier front,— small valley lobes projecting further south-ward along the valleys. The margin was evidently serrated 110 The Physical Geography of Xeiv York State or lobate, and the reason for the position of the marginat any given point was that there the ice supply just equaled the ability of the sunand air to melt it. Along this margin, as along. the margin of all glaciers on gatheredHere was the land, there were vastfloods of water poured uponthe hillsides andinto the to river valleys therainfall of other drainagesystems far to the , falling where it nowescapes into the Arctic watersor the St. Lawrence system,then passed on and enteredthe Susquehanna, or further FIG. 51. A scratched pebble taken from WCSt, the Upper Allegaiiy,the ice of the Greenland glacier. -i -, -\ -\ j_i /-^ ii- whence it was led to the Gulf of Mexico. As a result, many small stream valleys thencarried large volumes of water. Sometimes the front of
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherlondo, bookyear1902
