Show geologists fear end of falls of niagara geologists say that the recent tall fall of rock at niagara falls was only an incident in natures program for the complete destruction of 0 the ala balls unless something Is done to preserve them about tons bt bf rock fell on january 17 1931 1031 and such tails falls have been observed by geologists since 1842 the water from lake erle erie that tumbles over niagara is 1 singularly tree free from grit and gravel so there Is nothing to wear away the bed of 0 the stream when the force WIM aa water flater tarl r mines the softer rock under the hard dolomite the substructure gives way and the rock under the water crashes erosion has been wearing the falls back at an average of a little more than three feet a year it if that rate continues the 16 miles of falls and rapids between the present lip of the cataract and the lake will wear away by the year 03 and there will be nothing but a swiftly moving river engineers suggest a system of submerged deflecting weirs by which there would be an increase in the thin volume of wader on the american side and a greater fall that would cover some of the exposed surface on the canadian side |