Identifier: iceageinnorthame00wriguoft (find matches)
Title: The ice age in North America and its bearing upon the antiquity of man. 5th ed. with many new maps and illus., enl. and rewritten to incorporate the facts that bring it up to date, with chapters on Lake Agassiz and the Probable cause of glaciation
Year: 1911 (1910s)
Authors: Wright, G. Frederick (George Frederick), 1838-1921 Upham, Warren, 1850-1934
Subjects: Glacial epoch Glaciers
Publisher: Oberlin, Ohio Bibliotheca Sacra Co
Contributing Library: Gerstein - University of Toronto
Digitizing Sponsor: MSN

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eralsmaller ones visible within a distance of sixty or seventy milesfrom the mouth of the river. The second of these largerones has attracted most attention. This sweeps grandlyout into the valley from an opening between high mountainsfrom a source that is not visible. It ends at the level of theriver in an irregular bluff of ice, a mile and a half or twomiles in length, and about one hundred and fifty feet high.Two or more terminal moraines protect it from the directaction of the stream. What at first appeared as a range ofordinary hills along the river, proved on landing to be anancient terminal moraine, crescent-shaped, and covered witha forest. It extends the full length of the front of theglacier. * This glacier presents many difficulties to explorers. Asmall party of Russian officers once attempted its explora-tion, and were never heard from again. Mr. Blake re-ports that, as usual with receding glaciers, a considerable * American Journal of Science, vol. xciv, 1867, pp. 96-101.
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GLACIERS ON- THE PACIFIC COAST. 2,7 portion of the front ;is it spreads out in the valley is so cov-ered with bowlders, gravel, and mud that it is difficult to tellwhere the glacier really ends. But from the valley to thehigher land it rises in precipitous, irregular, stair-like blocks,with smooth sides, and so large that it was impossible to sur-mount them with the ordinary equipment of explorers. Theglacier is estimated to be about forty miles long. Another glacier, upon the opposite side of t5ie river, ofwhich Mr. Blake does not speak, was reported to me by thosefamiliar with the country as coming down to within abouttwo miles of the bank. The Indians are very likely correctin asserting that these two glaciers formerly met, compellingthe Stiekeen River to find its way to the sea through a vasttunnel. It would then have appeared simply as a subglacialstream of great magnitude. North of the Stiekeen River, glaciers of great size are ofincreasing frequency, and can be seen to good adv

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