File:Shore processes and shoreline development (1919) (14577277570).jpg

Identifier: shoreprocessessh00john (find matches)
Title: Shore processes and shoreline development
Year: 1919 (1910s)
Authors: Johnson, Douglas Wilson, 1878-1944
Subjects: Shorelines Coasts
Publisher: New York : John Wiley & Sons, Inc. (etc., etc.)
Contributing Library: University of California Libraries
Digitizing Sponsor: MSN

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ing valleys some twenty years be-fore Gannetts classic statement. The influence of rock frac-tures on the orientation of fjord valleys was recognized byBrogger^^^ -^ho did not fail, however, to attribute the actualexcavation of the fjords to glacial erosion. In a similar mannerReusch^^ for the Norwegian fjords and Andrews^ for those ofNew Zealand, make a clear distinction between the role of faultingin determining lines of weakness favorable to rapid stream andglacial erosion, and the role of glaciers in giving to the fjordstheir present form and depth. In 1895 Shaler^^, in discussing changes of sealevel, acceptedthe glacial origin of fjords and stated that since glaciers may cuttheir channels below the surface of the sea, the flooding of aglacial trough may be accomplished as the ice melts, without anysinking of the land or rising of the water level. This same view,that fjords do not indicate past changes of level, was adopted 180 TERMINOLOGY AND CLASSIFICATION OF SHORES Plate XVIII.
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P)ujt,j by Uiuhrii.mil & Underwood. The Naero Fjord, Norway, a partially submerged glacial trough. SHORELINES OF SUBMERGENCE 181 by Hubbard^ in a brief review of the fjord problem which hepublished in 1901; by Daly«^ in his account of the Labradorfjords; and by Andrews*^ in discussing the fjords of New Zealand.It is further elaborated by Gilbert^ in his report on glacial studies,forming the third volume of the Harriman Alaska Series, wherethe reader will find a discussion of the physics of glacial erosionbelow sealevel. MarshalP in his Geography of New Zealand,and Tarr^i in his report on the Physiography and GlacialGeology of the Yakutat Bay Region, Alaska are among otherstudents of fjords who attribute their excavation to ice erosion. Members of the non-glacialist group are by no means in agree-ment among themselves as to the origin of fjords. They agreeon one thing only — that ice did not excavate these deeply sub-merged canyons. Some consider fjords the product of normalstre

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