Travels in Alaska by John Muir
page 16 of 270 (05%)
page 16 of 270 (05%)
|
all, blending sky, land, and water in pale, misty blue. Then, while
you are dreamily gazing into the depths of this leafy ocean lane, the little steamer, seeming hardly larger than a duck, turning into some passage not visible until the moment of entering it, glides into a wide expanse--a sound filled with islands, sprinkled and clustered in forms and compositions such as nature alone can invent; some of them so small the trees growing on them seem like single handfuls culled from the neighboring woods and set in the water to keep them fresh, while here and there at wide intervals you may notice bare rocks just above the water, mere dots punctuating grand, outswelling sentences of islands. The variety we find, both as to the contours and the collocation of the islands, is due chiefly to differences in the structure and composition of their rocks, and the unequal glacial denudation different portions of the coast were subjected to. This influence must have been especially heavy toward the end of the glacial period, when the main ice-sheet began to break up into separate glaciers. Moreover, the mountains of the larger islands nourished local glaciers, some of them of considerable size, which sculptured their summits and sides, forming in some cases wide cirques with canyons or valleys leading down from them into the channels and sounds. These causes have produced much of the bewildering variety of which nature is so fond, but none the less will the studious observer see the underlying harmony--the general trend of the islands in the direction of the flow of the main ice-mantle from the mountains of the Coast Range, more or less varied by subordinate foothill ridges and mountains. Furthermore, all the islands, great and small, as well as the headlands and promontories of the mainland, are seen to have a rounded, over-rubbed appearance produced by the over-sweeping |
|